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  • American Chemical Society  (2,084,048)
  • Springer Nature  (1,070,368)
  • Wiley  (1,037,700)
  • American Institute of Physics (AIP)  (241,959)
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  • 1
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    Simultaneous preconcentration of 9 Be and cosmogenic 10 Be for determination of the 10 Be / 9 Be ratio in (coastal) seawater (2024)
    Wiley | ASLO
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    Publication Date: 2024-01-11
    Description: Beryllium isotopes have emerged as a quantitative tracer of continental weathering, but accurate and precise determination of the cosmogenic 10 Be and stable 9 Be in seawater is challenging, because seawater contains high concentrations of matrix elements but extremely low concentrations of 9 Be and 10 Be. In this study, we develop a new, time‐efficient procedure for the simultaneous preconcentration of 9 Be and 10 Be from (coastal) seawater based on the iron co‐precipitation method. The concentrations of 9 Be, 10 Be, and the resulting 10 Be/ 9 Be ratio for Changjiang Estuary water derived from the new procedure agree well with those obtained from the conventional procedure requiring separate preconcentration for 9 Be and 10 Be determinations. By avoiding the separate preconcentration, our newly developed procedure contributes toward more time‐efficient handling of samples, less sample cross‐contamination, and a more reliable 10 Be/ 9 Be ratio. Prior to this, we validated the iron co‐precipitation method using artificial seawater and natural water samples from the Amazon Estuary regarding: (1) the “matrix effect” for Be analysis, (2) its extraction efficiency for pg g −1 levels Be in the presence and absence of organic matter, and (3) the data comparability with another preconcentration method. We calculated that for the determination of 9 Be and 10 Be in most open ocean seawater with typical 10 Be concentrations of 〉 500 atoms g −1 , good precisions (〈 5%) can be achieved using less than 3 liters of seawater compared to more than 20 liters routinely used previously. Even for coastal seawater with extremely low 10 Be concentration (e.g., 100 atoms g −1 ), we estimate a maximum amount of 10 liters to be adequate.
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  • 2
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    Does non‐native diversity mirror Earth's biodiversity? (2024)
    Wiley
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    Publication Date: 2024-01-14
    Description: Aim: Human activities have introduced numerous non-native species (NNS) worldwide. Understanding and predicting large-scale NNS establishment patterns remain fundamental scientific challenges. Here, we evaluate if NNS composition represents a proportional subset of the total species pool available to invade (i.e. total global biodiversity), or, conversely, certain taxa are disproportionately pre-disposed to establish in non-native areas. Location: Global. Time period: Present day. Major taxa studied: Global diversity. Methods: We compiled one of the most comprehensive global databases of NNS (36,822 established species) to determine if NNS diversity is a representative proportional subset of global biodiversity. Results: Our study revealed that, while NNS diversity mirrors global biodiversity to a certain extent, due to significant deviance from the null model it is not always a representative proportional subset of global biodiversity. The strength of global biodiversity as a predictor depended on the taxonomic scale, with successive lower taxonomic levels less predictive than the one above it. Consequently, on average, 58%, 42% and 28% of variability in NNS numbers were explained by global biodiversity for phylum, class and family respectively. Moreover, global biodiversity was a similarly strong explanatory variable for NNS diversity among regions, but not habitats (i.e. terrestrial, freshwater and marine), where it better predicted NNS diversity for terrestrial than for freshwater and marine habitats. Freshwater and marine habitats were also greatly understudied relative to invasions in the terrestrial habitats. Over-represented NNS relative to global biodiversity tended to be those intentionally introduced and/or ‘hitchhikers’ associated with deliberate introductions. Finally, randomness is likely an important factor in the establishment success of NNS. Main conclusions: Besides global biodiversity, other important explanatory variables for large-scale patterns of NNS diversity likely include propagule and colonization pressures, environmental similarity between native and non-native regions, biased selection of intentionally introduced species and disparate research efforts of habitats and taxa.
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  • 3
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    A 1500‐year record of North Atlantic storm flooding from lacustrine sediments, Shetland Islands (UK) (2024)
    Wiley
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    Publication Date: 2024-01-14
    Description: Severe storm flooding poses a major hazard to the coasts of north‐western Europe. However, the long‐term recurrence patterns of extreme coastal flooding and their governing factors are poorly understood. Therefore, high‐resolution sedimentary records of past North Atlantic storm flooding are required. This multi‐proxy study reconstructs storm‐induced overwash processes from coastal lake sediments on the Shetland Islands using grain‐size and geochemical data, and the re‐analysis of historical data. The chronostratigraphy is based on Bayesian age–depth modelling using accelerator mass spectrometry 14 C and 137 Cs data. A high XRF‐based Si/Ti ratio and the unimodal grain‐size distribution link the sand layers to the beach and thus storm‐induced overwash events. Periods with more frequent storm flooding occurred 980–1050, 1150–1300, 1450–1550, 1820–1900 and 1950–2000 ce, which is largely consistent with a positive North Atlantic Oscillation mode. The Little Ice Age (1400–1850 ce ) shows a gap of major sand layers suggesting a southward shift of storm tracks and a seasonal variance with more storm floods in spring and autumn. Warmer phases shifted winter storm tracks towards the north‐east Atlantic, indicating a possible trend for future storm‐track changes and increased storm flooding in the northern North Sea region.
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  • 4
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    Identification and differentiation of vertical movement through morphological changes and stratigraphic imprint: Two distinct uplifting mechanisms in the upper Calabrian accretionary wedge, western Ionian Sea (2024)
    Wiley
    Details
    Publication Date: 2024-01-14
    Description: The seafloor morphology reflects both past and on‐going sedimentary, oceanographic and tectonic processes. Vertical movement is one of the drivers responsible for reshaping the seafloor through forming steep flanks that decrease slope stability, favour landslides, change current paths, form minibasins and control the sediment deposition, distribution and geometry. Here, we make use of these interactions to derive vertical movements and constrain the active tectonic processes at the western termination of the upper Calabrian accretionary wedge from the integrated analysis of bathymetric, backscatter, surface attributes and high‐resolution reflection seismic data. Within this area, we identify two types of deformational features and mechanisms that affect the depositional, erosional and tectonic processes at different scales. These include the deviation of channels, landslide scars, mass transport deposits (MTDs), separated drifts, sediment waves, lineaments and offset seafloor structures. The first type (long‐wavelength uplift) is an uplifted 22‐km‐wide region, in which seismic onlap relationships and the dip of deep reflectors suggest long‐lasting but slow tectonic uplift affecting sedimentation, and the second type (short‐wavelength uplift) includes three narrow elongated structures and one circular dome encircling the first region of uplift. We interpret that the first type of uplift feature was caused by tectonic deformation, while the second type is interpreted as formed by the fast uplift, tilting and faulting of modern sediments caused by diapirism due to rapid sedimentation in response to the first tectonically driven uplift. The study provides insight into the complex interaction of tectonic and sedimentary processes in the upper Calabrian accretionary wedge.
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  • 5
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    Modulation of Equatorial Currents and Tropical Instability Waves During the 2021 Atlantic Niño (2024)
    AGU (American Geophysical Union) | Wiley
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    Publication Date: 2024-01-17
    Description: In the boreal summer of 2021, the equatorial Atlantic experienced the strongest warm event, that is, Atlantic Niño, since the beginning of satellite observations in the 1970s. Such events have far‐reaching impacts on large‐scale wind patterns and rainfall over the surrounding continents. Yet, developing a paradigm of how Atlantic Niño interacts with the upper‐ocean currents and intraseasonal waves remains elusive. Here we show that the equatorial Kelvin wave associated with the onset of the 2021 Atlantic Niño modulated both the background flow and the eddy flux of the equatorial upper‐ocean circulation, causing an extremely weak and delayed tropical instability wave (TIW) season. TIW‐induced variations of sea surface temperature (SST), sea surface salinity, sea surface height, and eddy temperature advection were exceptionally weak during May to July, the climatological peak of TIW activity, but rebounded in August when higher than normal variability was observed. Moored velocity data at 23°W show that during the peak of the 2021 Atlantic Niño from June to August, the Equatorial Undercurrent was deeper and stronger than usual. An anomalously weak eddy momentum flux strongly suppressed barotropic energy conversion north of the equator from May to July, likely contributing to low TIW activity. Reduced baroclinic energy conversion also might have played a role, as the meridional gradient of SST was sharply reduced during the Atlantic Niño. Despite extremely weak TIW velocities, modest intraseasonal variability of chlorophyll‐a (Chl‐ a ) was observed during the Atlantic Niño, due to pronounced meridional Chl‐ a gradients that partly compensated for the weak TIWs. Plain Language Summary Every few years the eastern equatorial Atlantic Ocean is significantly warmer than usual during boreal summer. Such warm events are referred to as Atlantic Niño events, and share similarities with El Niño events in the Pacific. In 2021, the strongest Atlantic Niño in at least four decades was observed in the equatorial Atlantic. This study is the first that investigates the complex interaction between Atlantic Niño, tropical Atlantic upper‐ocean currents, and equatorial waves based on various observational data sets. We show that the developing 2021 Atlantic Niño weakened both the background flow and the variability of near‐surface currents in May, which in turn largely reduced the strength of intraseasonal (20–50 days) waves that are usually generated by instability of the upper‐ocean zonal currents. As a consequence, the cooling effect that these waves usually have north of the equator and the warming effect along the equator vanished from May to July 2021. Interestingly, variability of chlorophyll concentration was enhanced, suggesting that enhanced meridional chlorophyll gradients compensated for reduced wave activity. Key Points The developing 2021 Atlantic Niño led to weaker equatorial surface currents and reduced vertical shear of upper‐ocean horizontal velocity Strong reduction of the surface flow, eddy flux, and meridional temperature gradient in May caused extremely weak and delayed tropical instability wave (TIW) season Reduced meridional TIW advection contributed to sharpen the north equatorial Chl‐ a front resulting in modest intraseasonal Chl‐ a variability
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  • 6
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    Assessing Phytoplankton Primary Productivity Variability in the Changjiang Estuary, East China Sea From Coupled Fast Repetition Rate (FRR) Fluorometry and Chlorophyll‐ a Measurements (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-01-17
    Description: Phytoplankton primary productivity (PP) varies significantly over environmental gradients, particularly in physically‐dynamic systems such as estuaries and coastal seas. During summer, runoff peaks in the Changjiang River driving large environmental gradients in both the Changjiang estuary and adjacent East China Sea (ECS), likely driving significant variability in PP. As satellite models of PP often underperform in coastal waters, we aimed to develop a novel approach for assessing net PP variability in such a dynamic environment. Parallel in situ measurements of Fast Repetition Rate (FRR) fluorometry and carbon (C) uptake rates were conducted for the first time in this region during two summer cruises in 2019 and 2021. A series of 13 C‐incubations ( n = 31) were performed, with measured PP ranging from ∼6 to 1,700 mgC m −3 d −1 . Net PP values were significantly correlated with salinity ( r = 0.45), phytoplankton chlorophyll a (Chl‐ a , r = 0.88), Photosystem II (PSII) functional absorption cross‐section ( σ PSII , r = −0.76) and maximum PSII quantum yield ( F v / F m , r = 0.59). Stepwise regression analysis showed that Chl‐ a and σ PSII were the strongest predictors of net PP. A generalized additive model (GAM) was also used to estimate net PP considering nonlinear effects of Chl‐ a and σ PSII . We demonstrate that GAM outperforms linear modeling approaches in estimating net PP in this study, as evidenced by a lower root mean square error (∼140 vs. 250 mgC m −3 d −1 ). Our novel approach provides a valuable tool to examine carbon cycling dynamics in this important region. Plain Language Summary The East China Sea has a complex current system that creates a highly dynamic physical environment for phytoplankton, particularly during the summer months. Net primary productivity (PP) is highly variable in this region, yet characterizing these spatial patterns in PP is difficult due to the lack of a high‐resolution data collecting method. Therefore, a strong need exists for a quick and easily implemented method for monitoring PP in this dynamic system. Based on parallel measurements of phytoplankton biomass and photophysiology, we present a novel approach that allows us to rapidly and easily assess regional PP at a high resolution. The high data volume potentially afforded by our net PP estimation method could not only contribute to a better understanding of PP variations in such a dynamic environment, but also help fill the large gaps in field data needed for validating satellite‐based PP models. Key Points Parallel in situ measurements of net primary productivity (PP) and Fast Repetition Rate fluorometry were conducted in the Changjiang estuary Productivity was highest at stations with high Chl and low σ PSII , typically located along the Chiangjiang river plume front A generalized additive model was developed to estimate net PP, providing an approach for assessing regional C‐cycling dynamics
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  • 7
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    Misconceptions of the marine biological carbon pump in a changing climate: Thinking outside the “export” box (2024)
    Wiley
    Details
    Publication Date: 2024-01-19
    Description: The marine biological carbon pump (BCP) stores carbon in the ocean interior, isolating it from exchange with the atmosphere and thereby coregulating atmospheric carbon dioxide (CO 2 ). As the BCP commonly is equated with the flux of organic material to the ocean interior, termed “export flux,” a change in export flux is perceived to directly impact atmospheric CO 2 , and thus climate. Here, we recap how this perception contrasts with current understanding of the BCP, emphasizing the lack of a direct relationship between global export flux and atmospheric CO 2 . We argue for the use of the storage of carbon of biological origin in the ocean interior as a diagnostic that directly relates to atmospheric CO 2 , as a way forward to quantify the changes in the BCP in a changing climate. The diagnostic is conveniently applicable to both climate model data and increasingly available observational data. It can explain a seemingly paradoxical response under anthropogenic climate change: Despite a decrease in export flux, the BCP intensifies due to a longer reemergence time of biogenically stored carbon back to the ocean surface and thereby provides a negative feedback to increasing atmospheric CO 2 . This feedback is notably small compared with anthropogenic CO 2 emissions and other carbon‐climate feedbacks. In this Opinion paper, we advocate for a comprehensive view of the BCP's impact on atmospheric CO 2 , providing a prerequisite for assessing the effectiveness of marine CO 2 removal approaches that target marine biology.
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  • 8
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    Fluid Flow, Mineralization and Deformation in an Oceanic Detachment Fault: Microtextural, Geochemical and Isotopic Evidence From Pyrite at 13°30′N on the Mid‐Atlantic Ridge (2024)
    AGU (American Geophysical Union) | Wiley
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    Publication Date: 2024-01-30
    Description: Hydrothermal fluids in ultramafic‐hosted hydrothermal systems associated with oceanic detachment faults can be more oxidizing compared to mafic‐hosted vent sites. These fluids form a mineral assemblage of pyrite, magnetite and hematite. At 13°30′N on the Mid‐Atlantic Ridge, chlorite‐quartz breccias recovered from an exposed fault scarp contain pyrite, with abundant magnetite and hematite, indicating that the redox of the fluids was variable. In primary micron‐scale zonations in pyrite, Ni, Co, and Se have a decoupled relationship, recording fluctuations in the chemical composition and temperature of hydrothermal fluid as the grains grew. Secondary zonations that erase and overprint primary zonations are limited to the grain margin and permeable regions within the grain core. Secondary zonations formed via two processes: (a) grain dissolution followed by overgrowth, and (b) remobilization of metals during oxidizing fluid flow events. In both instances, Ni and Co have been mobilized and concentrated, and are not lost to the hydrothermal fluid. Superimposed on these features is evidence of grain scale deformation related to periods of fault movement along the detachment surface. Sulfur isotope ratios (δ 34 S) in pyrite systematically decrease from the grain margin to the grain core, indicating that increased amounts of sulfur were derived from thermochemical sulfate reduction of seawater. Thus, pyrite records the evolution of fluid flow and deformation events during exhumation along the detachment surface from ∼1 to 2 km below the seafloor at the base of the lava pile, with temporal fluctuations in fluid redox identified as an important process in controlling Ni and Co enrichment in pyrite. Plain Language Summary Detachment faults are long lived faults that can expose ultramafic rocks at the seafloor. We aim to investigate the links between hydrothermal activity and detachment fault formation. To do this we use pyrite as a tape recorder for past fluid flow events. Across individual mineral grains, distinct zonations in metal content and sulfur isotope ratios show that the incursion of seawater occurred periodically during pyrite growth, increasing during fault movement events that lead to changes in the temperature and pH of the fluids in the fault zone. These changes concentrated metals toward the center of individual mineral grains. Zonations were then overprinted by later deformation‐related events, providing evidence that the samples formed at deeper crustal levels below the seafloor and were progressively exhumed at the seafloor over time. Key Points Microtextural, geochemical, and isotopic variations in subseafloor pyrite record the history of sample exhumation along a detachment fault Nickel and Co are remobilized and concentrated in pyrite across individual mineral grains in response to fluctuating fluid redox conditions Evidence of pyrite deformation and alteration mineralogy of samples indicates sample exhumation from a depth of 1–2 km
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  • 9
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    Reproductive biology of the electric lanternfish Electrona risso (Myctophidae) and the bigscale fishes Melamphaes polylepis and Scopelogadus mizolepis (Melamphaidae) (2024)
    Wiley
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    Publication Date: 2024-02-01
    Description: This study was the first to investigate the key reproductive traits of the electric lantern fish Electrona risso (Myctophidae, n = 918) and the bigscale fishes (Melamphaidae) Melamphaes polylepis (n = 260) and Scopelogadus mizolepis (n = 649). Specimens of these mesopelagic species were collected in March and April 2015 in the eastern Central Atlantic (0–24° N, 20–26° W). Sex ratio was not significantly different from 1:1 in E. risso and M. polylepis but significantly skewed toward female dominance in S. mizolepis. Reproductive phases were determined macroscopically and by histological analyses on selected individuals. Female length at 50% maturity (L50) was 55.1 mm standard length (LS) in E. risso, with an observed female maximum length (Lmax) of 81.2 mm LS. M. polylepis females had an L50 of 40.2 mm LS and an Lmax of 86.7 mm LS. S. mizolepis had an L50 of 46 mm LS and an Lmax of 97.9 mm LS. The three species show histological features of iteroparity, but the E. risso population appears to occur in two year-classes and experience only one spawning season per lifetime in the study region. All three species are batch-spawners. A batch fecundity of 2668 eggs was estimated from one E. risso individual, with a relative batch fecundity of 369 eggs g−1 gonad-free body mass. M. polylepis had a batch fecundity of 1027 eggs and a relative batch fecundity of 149 eggs g−1 (n = 3). S. polylepis had a batch fecundity of 1545 eggs and a relative batch fecundity of 215 eggs g−1 (n = 21). The median gonado-somatic index during the actively spawning phase of E. risso was 4.5, significantly lower than that of M. polylepis (7.5) and S. mizolepis (7.1). No regressing or regenerating phases were observed in this study. Batch-spawning in all three species is suggested to be advantageous to cope with intra-annual variability in food supply and other risks for offspring survival. With what appears to be in effect a (facultative) semelparous strategy in combination with a short life span in E. risso, interannual differences would have a great effect on population dynamics of this species. Knowledge is still lacking on temporal aspects of reproduction such as the duration of the spawning season and the frequency of spawning, as well as age and growth.
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  • 10
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    The appendicularian Oikopleura dioica can enhance carbon export in a high CO2 ocean (2024)
    Wiley
    Details
    Publication Date: 2024-02-02
    Description: Gelatinous zooplankton are increasingly recognized to play a key role in the ocean's biological carbon pump. Appendicularians, a class of pelagic tunicates, are among the most abundant gelatinous plankton in the ocean, but it is an open question how their contribution to carbon export might change in the future. Here, we conducted an experiment with large volume in situ mesocosms (~55–60 m3 and 21 m depth) to investigate how ocean acidification (OA) extreme events affect food web structure and carbon export in a natural plankton community, particularly focusing on the keystone species Oikopleura dioica, a globally abundant appendicularian. We found a profound influence of O. dioica on vertical carbon fluxes, particularly during a short but intense bloom period in the high CO2 treatment, during which carbon export was 42%–64% higher than under ambient conditions. This elevated flux was mostly driven by an almost twofold increase in O. dioica biomass under high CO2. This rapid population increase was linked to enhanced fecundity (+20%) that likely resulted from physiological benefits of low pH conditions. The resulting competitive advantage of O. dioica resulted in enhanced grazing on phytoplankton and transfer of this consumed biomass into sinking particles. Using a simple carbon flux model for O. dioica, we estimate that high CO2 doubled the carbon flux of discarded mucous houses and fecal pellets, accounting for up to 39% of total carbon export from the ecosystem during the bloom. Considering the wide geographic distribution of O. dioica, our findings suggest that appendicularians may become an increasingly important vector of carbon export with ongoing OA.
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  • 11
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    A Synthesis of Global Coastal Ocean Greenhouse Gas Fluxes (2024)
    AGU (American Geophysical Union) | Wiley
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    Publication Date: 2024-02-22
    Description: The coastal ocean contributes to regulating atmospheric greenhouse gas concentrations by taking up carbon dioxide (CO2) and releasing nitrous oxide (N2O) and methane (CH4). In this second phase of the Regional Carbon Cycle Assessment and Processes (RECCAP2), we quantify global coastal ocean fluxes of CO2, N2O and CH4 using an ensemble of global gap-filled observation-based products and ocean biogeochemical models. The global coastal ocean is a net sink of CO2 in both observational products and models, but the magnitude of the median net global coastal uptake is similar to 60% larger in models (-0.72 vs. -0.44 PgC year-1, 1998-2018, coastal ocean extending to 300 km offshore or 1,000 m isobath with area of 77 million km2). We attribute most of this model-product difference to the seasonality in sea surface CO2 partial pressure at mid- and high-latitudes, where models simulate stronger winter CO2 uptake. The coastal ocean CO2 sink has increased in the past decades but the available time-resolving observation-based products and models show large discrepancies in the magnitude of this increase. The global coastal ocean is a major source of N2O (+0.70 PgCO2-e year-1 in observational product and +0.54 PgCO2-e year-1 in model median) and CH4 (+0.21 PgCO2-e year-1 in observational product), which offsets a substantial proportion of the coastal CO2 uptake in the net radiative balance (30%-60% in CO2-equivalents), highlighting the importance of considering the three greenhouse gases when examining the influence of the coastal ocean on climate. The coastal ocean regulates greenhouse gases. It acts as a sink of carbon dioxide (CO2) but also releases nitrous oxide (N2O) and methane (CH4) into the atmosphere. This synthesis contributes to the second phase of the Regional Carbon Cycle Assessment and Processes (RECCAP2) and provides a comprehensive view of the coastal air-sea fluxes of these three greenhouse gases at the global scale. We use a multi-faceted approach combining gap-filled observation-based products and ocean biogeochemical models. We show that the global coastal ocean is a net sink of CO2 in both observational products and models, but the coastal uptake of CO2 is similar to 60% larger in models than in observation-based products due to model-product differences in seasonality. The coastal CO2 sink is strengthening but the magnitude of this strengthening is poorly constrained. We also find that the coastal emissions of N2O and CH4 counteract a substantial part of the effect of coastal CO2 uptake in the atmospheric radiative balance (by 30%-60% in CO2-equivalents), highlighting the need to consider these three gases together to understand the influence of the coastal ocean on climate. We synthesize air-sea fluxes of CO2, nitrous oxide and methane in the global coastal ocean using observation-based products and ocean models The coastal ocean CO2 sink is 60% larger in ocean models than in observation-based products due to systematic differences in seasonality Coastal nitrous oxide and methane emissions offset 30%-60% of the CO2 coastal uptake in the net radiative balance
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  • 12
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    Understanding volcanic margin evolution through the lens of Norway's youngest granite (2024)
    Wiley
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    Publication Date: 2024-02-23
    Description: Three boreholes drilled during the International Ocean Discovery Program (IODP) Expedition 396 have yielded unexpected findings of altered granitic rocks covered by basalt flows, interbedded sediments and glacial mud near the continent‐ocean transition of the mid‐Norwegian margin. U‐Pb and K‐Ar geochronological analyses were conducted on both protolithic and authigenically formed K‐bearing minerals to determine the age of granite crystallisation and subsequent alteration episodes. The granite's crystallisation age based on 104 zircons is 56.3 ± 0.2 Ma, and subsequent exhumation along with alteration/weathering events took place between 54.7 ± 1 and 37.1 ± 1 Ma. This intrusion represents the youngest granite discovered in Norway and intruded at an extremely shallow crustal level before a rapid rift‐to‐drift transition. The shallow emplacement of granitic rock and its fast exhumation before and during the onset of volcanism holds significant implications for the syn‐ and post‐breakup tectonic evolution of volcanic margins.
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  • 13
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    Preliminary Characterization of Submarine Basalt Magnetic Mineralogy Using Amplitude‐Dependence of Magnetic Susceptibility (2024)
    AGU (American Geophysical Union) | Wiley
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    Publication Date: 2024-02-23
    Description: The past ∼200 million years of Earth's geomagnetic field behavior have been recorded within oceanic basalts, many of which are only accessible via scientific ocean drilling. Obtaining the best possible paleomagnetic measurements from such valuable samples requires an a priori understanding of their magnetic mineralogies when choosing the most appropriate protocol for stepwise demagnetization experiments (either alternating field or thermal). Here, we present a quick, and non‐destructive method that utilizes the amplitude‐dependence of magnetic susceptibility to screen submarine basalts prior to choosing a demagnetization protocol, whenever conducting a pilot study or other detailed rock‐magnetic characterization is not possible. We demonstrate this method using samples acquired during International Ocean Discovery Program Expedition 391. Our approach is rooted in the observation that amplitude‐dependent magnetic susceptibility is observed in basalt samples whose dominant magnetic carrier is multidomain titanomagnetite (∼TM 60–65 , (Ti 0.60–0.65 Fe 0.35–0.40 )Fe 2 O 4 ). Samples with low Ti contents within titanomagnetite or samples that have experienced a high degree of oxidative weathering do not display appreciable amplitude dependence. Due to their low Curie temperatures, basalts that possess amplitude‐dependence should ideally be demagnetized either using alternating fields or via finely‐spaced thermal demagnetization heating steps below 300°C. Our screening method can enhance the success rate of paleomagnetic studies of oceanic basalt samples. Plain Language Summary Oceanic basalts are ideal recorders of the Earth's magnetic field. To decipher magnetic histories recorded in rocks, paleomagnetists need to isolate the magnetization directions and intensities within rocks by one of two possible methods. One method typically involves progressively heating the samples to high temperatures. The other method involves exposing samples to alternating magnetic fields with increasing peak field intensities. Both of these methods are ultimately destructive to the original magnetization preserved within rocks. However, without knowledge of a given rock's magnetic mineralogy, randomly choosing thermal or alternating field demagnetization methods may result in high failure rates. We developed a pre‐screening method to help decide which cleaning method will likely be more successful for a given sample based on low‐field magnetic susceptibility measurements. These measurements do not affect the original magnetic information recorded in a rock, thereby permitting subsequent paleomagnetic studies on the same sample. Our technique can be performed as rapidly as 2 min per sample, is non‐destructive, and does not require complicated sample preparation. Key Points Paleomagnetic studies utilize either alternating field or thermal demagnetization, but it is difficult to choose the best protocol a priori Amplitude‐dependence of magnetic susceptibility measurements permits preliminary magnetic mineralogy characterization in submarine basalts Rapid amplitude‐dependence measurements may aid in deciding upon the best demagnetization protocol for submarine basalt samples
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  • 14
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    Influence of Hydrodynamics on the Composition and Reactivity of Particulate Organic Matter in a Large River Influenced Ocean Margin (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-02-23
    Description: Marginal seas influenced by large rivers are characterized by complex hydrodynamic and organic matter cycling processes. However, the impacts of hydrodynamics on the composition and reactivity of particulate organic matter (POM) remain unclear. Here we conducted a comprehensive study on the bulk, molecular and biological properties of suspended POM in the Changjiang Estuary and adjacent area subjected to strong currents, eddies as well as typhoons during spring and autumn. D/L‐enantiomers of particulate amino acids (PAA) were analyzed to evaluate the bioreactivity of POM and quantify bacterial‐derived organic carbon. We found that POM bioavailability as indicated by carbon‐normalized yields of PAA (PAA‐C%) reflected the ecosystem productivity. Relatively high PAA‐C% values (20−35%) were observed in productive areas influenced by Changjiang River plume, cyclonic eddies and typhoons, likely related to the enhanced nutrient availability arising from hydrodynamic processes. In contrast, the oligotrophic Taiwan Warm Current‐influenced regions featured relatively low POM bioavailability (PAA‐C% 〈 10%) despite typhoons facilitating water mixing. The PAA‐C% values showed a significant positive correlation with extracellular enzyme activity, indicating that bioavailable POM can rapidly stimulate heterotrophic transformation. Hot spots of elevated bioavailable POM showed high contributions of bacterial organic carbon. A large portion (∼2/3) of bacterial organic carbon was present in the form of bacterial detritus, suggesting that patches of these biological hot spots represent important sites of carbon sequestration. Together, our findings indicate that fresh POM production is largely controlled by nutrient supply driven by hydrodynamic processes, with important implications for carbon sequestration in the dynamic ocean margins. Plain Language Summary Marginal seas are subject to complex hydrodynamic processes and play an important role in carbon sequestration. Disentangling the linkages between hydrodynamics and organic carbon reactivity and composition is crucial to understanding the regional carbon cycle. Here we collected suspended particulate organic matter (POM) in the Changjiang Estuary and adjacent coastal areas. Based on the biomarker D/L‐amino acids, we assessed the bioavailability of POM and quantified the organic carbon originating from bacteria. We found that high bioactivity of POM occurred in productive Changjiang River plume, cyclonic eddy, and typhoon influenced areas. These hydrodynamic processes appear to increase nutrient availability, therefore promoting phytoplankton growth. Bioavailable POM can rapidly stimulate heterotrophic activity and facilitate the transformation of algal‐derived organic carbon to bacterial detritus, thus contributing to carbon sequestration. Our findings suggest that the production of bioavailable POM is largely controlled by hydrodynamically driven nutrient supply. Key Points We use D/L‐amino acids to assess the bioreactivity and bacterial origins of particulate organic matter (POM) in the dynamic Changjiang Estuary and adjacent area High bioavailability of POM occurs in productive regions affected by Changjiang River plume, cyclonic eddies and typhoons Hot spots of bioavailable POM represent important sites for carbon sequestration
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    The Influence of Freshwater Input on the Evolution of the 1995 Benguela Nino (2024)
    Wiley | AGU (American Geological Society)
    Details
    Publication Date: 2024-02-23
    Description: Key Points: - Freshwater input has significantly contributed to the surface warming at the peak of the 1995 Benguela Niño - Anomalously high river discharge and precipitation increased stratification and reduced turbulent heat loss by creating barrier layers - Combination of high freshwater input and strong poleward surface current might play a role in temperature variability off Angola Benguela Nino events are characterized by strong warm sea surface temperature (SST) anomalies off the Angolan and Namibian coasts. In 1995, the strongest event in the satellite era took place, impacting fish availability in both Angolan and Namibian waters. In this study, we use direct observations, satellite data, and reanalysis products to investigate the impact that the up-until-now unnoticed mechanism of freshwater input from Congo River discharge (CRD) and precipitation had on the evolution of the 1995 Benguela Nino. In the onset phase of the event, anomalous rainfall in November/December 1994 at around 6 degrees S, combined with a high CRD, generated a low salinity plume. The plume was advected into the Angola-Namibia region in the following February/March 1995 by an anomalously strong poleward surface current generated by the relaxation of the southerly winds and shifts in the coastal wind stress curl. The presence of this low surface salinity anomaly of about -2 psu increased ocean stability by generating barrier layers, thereby reducing the turbulent heat loss, since turbulent mixing acted on a weak vertical temperature gradient. A mixed layer heat budget analysis demonstrates that southward advection of Angolan waters drove the warming at the onset, while reduced mixing played the main role at the event's peak. We conclude that a freshwater input contributed to the SST increase in this exceptionally strong event and suggest that this input can influence the SST variability in Angola-Namibia waters through a combination of high CRD, precipitation, and the presence of a strong poleward surface current. Benguela Nino events are characterized by excessive warming of the sea surface temperature off the Angolan and Namibian coasts. One of the strongest-ever recorded warm events dates back to 1995, impacting fish availability in both Angolan and Namibian waters. In our research, we investigate if freshwater from rain and from the Congo River could have impacted the evolution of this 1995 Benguela Nino. In the event's early stage, high precipitation and river discharge generated a low salinity pool at the Congo River mouth, which in February/March 1995 was taken to the south by an exceptionally strong surface current, generated by changes in wind strength and direction at the African coast. This low sea surface salinity in a shallow layer in the upper meters of the ocean increased the ocean's stability. As the stabilized waters diminished the usual mixing from the depths below which cools down the surface waters, it contributed to an increase in warming in the surface layer of the ocean. We conclude that the warming of the surface waters in the region was indeed influenced by the combination of high precipitation and high Congo River discharge with a strong surface current toward the south. Freshwater input has significantly contributed to the surface warming at the peak of the 1995 Benguela Nino Anomalously high river discharge and precipitation increased stratification and reduced turbulent heat loss by creating barrier layers Combination of high freshwater input and strong poleward surface current might play a role in temperature variability off Angola
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    Early Diagenetic Controls on Sedimentary Iodine Release and Iodine‐To‐Organic Carbon Ratios in the Paleo‐Record (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-02-23
    Description: Iodine cycling in the ocean is closely linked to productivity, organic carbon export, and oxygenation. However, iodine sources and sinks at the seafloor are poorly constrained, which limits the applicability of iodine as a biogeochemical tracer. We present pore water and solid phase iodine data for sediment cores from the Peruvian continental margin, which cover a range of bottom water oxygen concentrations, organic carbon rain rates and sedimentation rates. By applying a numerical reaction‐transport model, we evaluate how these parameters determine benthic iodine fluxes and sedimentary iodine‐to‐organic carbon ratios (I:C org ) in the paleo‐record. Iodine is delivered to the sediment with organic material and released into the pore water as iodide (I − ) during early diagenesis. Under anoxic conditions in the bottom water, most of the iodine delivered is recycled, which can explain the presence of excess dissolved iodine in near‐shore anoxic seawater. According to our model, the benthic I − efflux in anoxic areas is mainly determined by the organic carbon rain rate. Under oxic conditions, pore water dissolved I − is oxidized and precipitated at the sediment surface. Much of the precipitated iodine re‐dissolves during early diagenesis and only a fraction is buried. Particulate iodine burial efficiency and I:C org burial ratios do increase with bottom water oxygen. However, multiple combinations of bottom water oxygen, organic carbon rain rate and sedimentation rate can lead to identical I:C org , which limits the utility of I:C org as a quantitative oxygenation proxy. Our findings may help to better constrain the ocean's iodine mass balance, both today and in the geological past. Key Points The impact of early diagenesis on benthic iodine fluxes and iodine burial was quantitatively evaluated using a reaction‐transport model Dissolved iodine anomalies in the water column are indicative of benthic efflux from anoxic sediments with high organic carbon turnover Not only bottom water oxygen but also organic carbon delivery and sedimentation rate determine sedimentary iodine‐to‐organic carbon ratios
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    Assessment of Chalk as an Archive for the Lithium Isotope Composition of Seawater (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-02-23
    Description: The understanding of silicate weathering and its role as a sink for atmospheric CO 2 is important to get a better insight into how the Earth shifts from warm to cool climates. The lithium isotope composition (δ 7 Li) of marine carbonates can be used as a proxy to track the past chemical weathering of silicates. A high‐resolution δ 7 Li record would be helpful to evaluate the role of silicate weathering during the late Cretaceous climate cooling. Here, we assess chalk as a potential archive for reconstructing Late Cretaceous seawater Li isotope composition by comparing Maastrichtian chalk from Northern Germany (Hemmoor, Kronsmoor) to a Quaternary coccolith ooze from the Manihiki Plateau (Pacific Ocean) as a lithological analog to modern conditions. We observe a negative offset of 3.9 ± 0.6‰ for the coccolith ooze relative to the modern seawater Li isotope composition (+31.1 ± 0.3‰; 2SE; n = 54), a value that falls in the range of published offsets for modern core‐top samples and for brachiopod calcite. Further, the negative offset between the Li isotope compositions of Manihiki coccolith ooze and modern planktonic foraminifera is 2.3 ± 0.6‰. Although chalk represents a diagenetically altered modification of pelagic nannofossil ooze, manifested by changes in the composition of trace elements, we observe a consistent offset of Li isotope data between Maastrichtian chalk and Maastrichtian planktonic foraminiferal data (−1.4 ± 0. 5‰) that lies within the uncertainty of modern values. We therefore suggest that chalk can be used as a reliable archive for δ 7 Li reconstructions. Key Points Chalk is a reliable archive for the Li isotope composition of seawater Coccolith ooze has a negative offset of 3.9 ± 0.6‰ from modern seawater for Li isotope ratios The estimated mean value for the late Maastrichtian seawater Li isotope composition is +27.5 ± 1.0‰
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    Impacts of North Atlantic Model Biases on Natural Decadal Climate Variability (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-02-26
    Description: Key Points: - North Atlantic biases are alleviated by an eddying nested ocean configuration embedded in a global climate model, FOCI-VIKING10 - It is indicated that reduction of the North Atlantic biases could improve the representation of NAO sub-decadal (8 years) variability - For detecting weak external imprints with limited computational resources, an ensemble with a coarse-resolution model is favorable Increasing the horizontal resolution of an ocean model is frequently seen as a way to reduce the model biases in the North Atlantic, but we are often limited by computational resources. Here, a two-way nested ocean model configuration (VIKING10) that consists of a high-resolution (1/10°) component and covers the northern North Atlantic, is embedded in a 1/2° ocean grid as part of the global chemistry-climate model, FOCI (called FOCI-VIKING10). This configuration yields a significantly improved path of the North Atlantic current (NAC), which here reduces the North Atlantic cold bias by ∼50%. Compared with the coarse-resolution, non-eddying model, the improved thermal state of upper ocean layers and surface heat fluxes in a historical simulation based on FOCI-VIKING10 are beneficial for simulating the subdecadal North Atlantic Oscillation (NAO) variability (i.e., a period of 8 years). A northward drift of the NAO-forced ocean thermal anomalies as seen in observations and the eddying FOCI-VIKING10, provide a lagged ocean feedback to the NAO via changes in the net surface heat flux, leading to the NAO periodicity of 8 years. This lagged feedback and the 8 years variability of the NAO cannot be captured by the non-eddying standard FOCI historical simulation. Furthermore, the argumentative responses of the North Atlantic to the 11-year solar cycle are re-examined in this study. The reported solar-induced NAO-like responses are confirmed in the 9-member ensemble mean based on FOCI but with low robustness among individual members. A lagged NAO-like response is only found in the nested eddying simulation but absent from the non-eddying reference simulation, suggesting North Atlantic biases importantly limit climate model capability to realistically solar imprints in North Atlantic climate.
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    Origin, evolution and significance of giant buried sediment mounds near the Sahara Slide Complex, North‐west African margin (2024)
    IAS (International Association of Sedimentologists) | Wiley
    Details
    Publication Date: 2024-03-01
    Description: Mixed turbidite–contourite depositional systems result from interactions between down‐slope turbidity currents and along‐slope bottom currents, comprising excellent records of past oceanographic currents. Modern and ancient systems have been widely documented along the continental margins of the Atlantic Ocean. Yet, few examples have so far been identified on the North‐west African continental margin, limiting understanding of the sedimentary and palaeoceanographic evolution in this area. This work uses two‐dimensional seismic reflection profiles to report, for the first time, the presence of three giant sediment mounds beneath the headwall region of the Sahara Slide Complex. The sediment mounds are elongated and separated by two broad canyons, showing a north‐west/south‐east orientation that is roughly perpendicular to the continental margin. These mounds are 24 to 37 km long and 12 to 17 km wide, reaching a maximum height of ca 1000 m. Numerous slide scarps are observed within and along the flanks of the mounds, hinting at the occurrence of submarine landslides during their development. Based on their geometries, external shapes, internal seismic architecture and stratigraphic stacking patterns, it is proposed that these sediment mounds comprise down‐slope elongated mounded drifts formed in a mixed turbidite–contourite system during four evolutionary stages: onset, growth, maintenance and burial. The significance of this work is that it demonstrates the gradual transition from a turbidite system to a full mixed turbidite–contourite system to be associated, in the study area, with the establishment of strong ocean currents along north‐west Africa.
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    How Hydrothermal Cooling and Magmatic Sill Intrusions Control Flip‐Flop Faulting at Ultraslow‐Spreading Mid‐Ocean Ridges (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-03-01
    Description: “Flip‐flop” detachment mode represents an endmember type of lithosphere‐scale faulting observed at almost amagmatic sections of ultraslow‐spreading mid‐ocean ridges. Recent numerical experiments using an imposed steady temperature structure show that an axial temperature maximum is essential to trigger flip‐flop faults by focusing flexural strain in the footwall of the active fault. However, ridge segments without significant melt budget are more likely to be in a transient thermal state controlled, at least partly, by the faulting dynamics themselves. Therefore, we investigate which processes control the thermal structure of the lithosphere and how feedbacks with the deformation mechanisms can explain observed faulting patterns. We present results of 2‐D thermo‐mechanical numerical modeling including serpentinization reactions and dynamic grain size evolution. The model features a novel form of parametrized hydrothermal cooling along fault zones as well as the thermal and rheological effects of periodic sill intrusions. We find that the interplay of hydrothermal fault zone cooling and periodic sill intrusions in the footwall facilitates the flip‐flop detachment mode. Hydrothermal cooling of the fault zone pushes the temperature maximum into the footwall, while intrusions near the temperature maximum further weaken the rock and promote the formation of new faults with opposite polarity. Our model allows us to put constraints on the magnitude of two processes, and we obtain most reasonable melt budgets and hydrothermal heat fluxes if both are considered. Furthermore, we frequently observe two other faulting modes in our experiments complementing flip‐flop faulting to yield a potentially more robust alternative interpretation for existing observations. Plain Language Summary At mid‐ocean ridges, two plates diverge and new seafloor is created. The nature and appearance of this new seafloor strongly depend on spreading velocity and the availability of magmatic melts. At one of the melt‐poorest and slowest‐spreading ridges, a special form of large‐scale tectonic faults, so‐called flip‐flop detachments, can be observed. Tectonic faults can act as pathways for fluids circulating through the seafloor, which provides a significant cooling effect for the young plate. The interplay of magmatic activity, faulting and fluid circulation is evident at many different ridges with different magmatic activity and spreading rates. Flip‐flop faulting is restricted to only a few ridge sections worldwide, and we here investigate the prerequisites for this special spreading mode. To do so, we set up a computer model of an ultraslow‐spreading mid‐ocean ridge including the effects of sparse magmatism as well as the cooling effect associated with fluid circulation. We find that feedbacks between faulting dynamics, hydrothermal cooling and magmatic activity control the magnitude and spatial location of each individual process. Seafloor and subsurface observations are best explained by calculations with moderate melt input and hydrothermal circulation acting together. Key Points We implemented hydrothermal cooling and magmatic intrusion in a thermo‐mechanical model to explain detachment faulting at ultraslow ridges Stable flip‐flop detachment faulting is observed for setups considering both melt input and hydrothermal heat fluxes at realistic magnitudes Two other faulting modes frequently observed in our model offer potential alternative interpretations for existing seafloor observations
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    Evaluating the physics of outcrop-to-outcrop flow with hydrothermal flow models (2024)
    Wiley | AGU (American Geophysical Union)
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    Publication Date: 2024-03-07
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    Volcanic flank collapse, secondary sediment failure and flow-transition: multi-stage landslide emplacement offshore Montserrat, Lesser Antilles (2024)
    AGU (American Geophysical Union) | Wiley
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    Publication Date: 2024-03-14
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    Inverting Geodetic Strain Rates for Slip Deficit Rate in Complex Deforming Zones: An Application to the New Zealand Plate Boundary (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-03-18
    Description: The potential for future earthquakes on faults is often inferred from inversions of geodetically derived surface velocities for locking on faults using kinematic models such as block models. This can be challenging in complex deforming zones with many closely spaced faults or where deformation is not readily described with block motions. Furthermore, surface strain rates are more directly related to coupling on faults than surface velocities. We present a methodology for estimating slip deficit rate directly from strain rate and apply it to New Zealand for the purpose of incorporating geodetic data in the 2022 revision of the New Zealand National Seismic Hazard Model. The strain rate inversions imply slightly higher slip deficit rates than the preferred geologic slip rates on sections of the major strike‐slip systems including the Alpine Fault, the Marlborough Fault System and the northern part of the North Island Fault System. Slip deficit rates are significantly lower than even the lowest geologic estimates on some strike‐slip faults in the southern North Island Fault System near Wellington. Over the entire plate boundary, geodetic slip deficit rates are systematically higher than geologic slip rates for faults slipping less than one mm/yr but lower on average for faults with slip rates between about 5 and 25 mm/yr. We show that 70%–80% of the total strain rate field can be attributed to elastic strain due to fault coupling. The remaining 20%–30% shows systematic spatial patterns of strain rate style that is often consistent with local geologic style of faulting. Plain Language Summary The potential for future earthquakes on faults is often inferred from velocities of the ground surface derived from satellite geodesy, but this approach can be challenging in complex deforming zones with many closely spaced faults. We present a new methodology for estimating the rate at which energy is accumulating on faults using measurements of surface strain rates. The method is applied to New Zealand for the purpose of incorporating geodetic data in the 2022 revision of the New Zealand National Seismic Hazard Model. We show that 70%–80% of the total deformation field can be attributed to energy accumulation on known active faults while the source of the remaining 20%–30% remains unknown. Along some of the major faults in New Zealand we find some important differences in rates of energy accumulation from what is expected from geologic data. Estimated rates are significantly lower than even the lowest geologic estimates on some faults in the fault system near highly‐populated Wellington. Key Points We develop a method to invert geodetically derived strain rates for slip deficit rates on faults We find small but systematic differences between slip deficit rates and geologic slip rates About 70%–80% of the surface strain can be attributed to elastic strain due to coupling on faults
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    Stimulation of small phytoplankton drives enhanced sinking particle formation in a subtropical ocean eddy (2024)
    Wiley | ASLO (Association for the Sciences of Limnology and Oceanography)
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    Publication Date: 2024-03-15
    Description: Nutrient transfer into the sunlit surface ocean by cyclonic eddies is potentially crucial for sustaining primary productivity in the stratified subtropical gyres. However, the nature of productivity enhancements, including the flow of matter to higher trophic levels and its impact on carbon fluxes, remain poorly resolved. Here, we report a detailed assessment of the biogeochemical response to a cyclonic eddy in the subtropical Northwest Pacific via a combination of ship‐based and autonomous platforms. Primary production was enhanced twofold within the eddy core relative to reference sites outside, whereas phytoplankton biomass even decreased. Pico‐phytoplankton (〈 2 μ m) dominated (〉 80%) both phytoplankton biomass and primary production inside and outside the eddy. The stimulated primary production in the eddy core was accompanied by an approximately twofold increase in mesozooplankton abundance, an approximately threefold increase in particle formation in the deep chlorophyll maximum layer, as well as significantly enhanced surface oceanic CO 2 uptake and net community production. We suggest these observations carry important implications for understanding carbon export in the subtropical ocean and highlight the need to include such subtropical eddy features in ocean carbon budget analyses.
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    Switches between nitrogen limitation and nitrogen–phosphorus co‐limitation in the subtropical North Atlantic Ocean (2024)
    Wiley | ASLO
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    Publication Date: 2024-03-15
    Description: Concentrations of bioavailable inorganic nitrogen (N) and phosphorus (P) are simultaneously depleted in the (sub)tropical North Atlantic Ocean, but it remains unclear if phytoplankton growth rates are N limited or N–P co‐limited. Here we present findings from three bottle‐scale experiments using a four‐by‐four matrix of low‐level N and P additions, conducted at one site in the subtropical North Atlantic Ocean. Phytoplankton responses were assessed both in terms of bulk chlorophyll a (Chl a ) concentrations and intracellular Chl a of dominant Prochlorococcus and Synechococcus groups. Two matrix experiments suggested that N was independently limiting in situ growth, with no co‐limiting role for P, while the third showed co‐limitation by both N and P in this region. This switch from N limitation to N–P co‐limitation was attributed to an episodic wet deposition event that supplied N, thereby stimulating phytoplankton growth and consuming available P. Such rapid transitions in nutrient limitation in response to environmental forcing might be common in oceanic systems with multiple depleted nutrients.
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    Accurate measurement of K/Ca in low‐[K] carbonate samples using laser‐ablation sector‐field inductively coupled plasma mass spectrometry (2024)
    Wiley
    Details
    Publication Date: 2024-03-15
    Description: Rationale Potassium (K) is a major component of several silicate minerals and seawater, and, therefore, constraining past changes in the potassium cycle is a promising way of tracing large‐scale geological processes on Earth. However, [K] measurement using inductively coupled plasma mass spectrometry (ICP‐MS) is challenging due to an ArH + interference, which may be of a similar magnitude to the K + ion beam in samples with 〈0.1% m/m [K]. Methods In this work, we investigated the effect of the ArH + interference on K/Ca data quality by comparing results from laser‐ablation (LA)‐ICP‐MS measured in medium and high mass resolution modes and validating our LA results via solution ICP‐optical emission spectroscopy (OES) and solution ICP‐MS measurements. To do so, we used a wide range of geological reference materials, with a particular focus on marine carbonates, which are potential archives of past changes in the K cycle but are typically characterised by [K] 〈 200 μg/g. In addition, we examine the degree to which trace‐element data quality is driven by downhole fractionation during LA‐ICP‐MS measurements. Results Our results show that medium mass resolution (MR) mode is sufficiently capable of minimising the effect of the ArH + interference on K + . However, the rate of downhole fractionation for Na and K varies between different samples as a result of their differing bulk composition, resulting in matrix‐specific inaccuracy. We show how this can be accounted for via downhole fractionation corrections, resulting in an accuracy of better than 1% and a long‐term reproducibility (intermediate precision) of 〈6% (relative standard deviation) in JCp‐1NP using LA‐ICP‐MS in MR mode. Conclusion Our [K] measurement protocol is demonstrably precise and accurate and applicable to a wide range of materials. The measurement of K/Ca in relatively low‐[K] marine carbonates is presented here as a key example of a new application opened up by these advances.
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    Comprehensive molecular‐isotopic characterization of archaeal lipids in the Black Sea water column and underlying sediments (2024)
    Wiley
    Details
    Publication Date: 2024-03-25
    Description: The Black Sea is a permanently anoxic, marine basin serving as model system for the deposition of organic-rich sediments in a highly stratified ocean. In such systems, archaeal lipids are widely used as paleoceanographic and biogeochemical proxies; however, the diverse planktonic and benthic sources as well as their potentially distinct diagenetic fate may complicate their application. To track the flux of archaeal lipids and to constrain their sources and turnover, we quantitatively examined the distributions and stable carbon isotopic compositions (delta 13C) of intact polar lipids (IPLs) and core lipids (CLs) from the upper oxic water column into the underlying sediments, reaching deposits from the last glacial. The distribution of IPLs responded more sensitively to the geochemical zonation than the CLs, with the latter being governed by the deposition from the chemocline. The isotopic composition of archaeal lipids indicates CLs and IPLs in the deep anoxic water column have negligible influence on the sedimentary pool. Archaeol substitutes tetraether lipids as the most abundant IPL in the deep anoxic water column and the lacustrine methanic zone. Its elevated IPL/CL ratios and negative delta 13C values indicate active methane metabolism. Sedimentary CL- and IPL-crenarchaeol were exclusively derived from the water column, as indicated by non-variable delta 13C values that are identical to those in the chemocline and by the low BIT (branched isoprenoid tetraether index). By contrast, in situ production accounts on average for 22% of the sedimentary IPL-GDGT-0 (glycerol dibiphytanyl glycerol tetraether) based on isotopic mass balance using the fermentation product lactate as an endmember for the dissolved substrate pool. Despite the structural similarity, glycosidic crenarchaeol appears to be more recalcitrant in comparison to its non-cycloalkylated counterpart GDGT-0, as indicated by its consistently higher IPL/CL ratio in sediments. The higher TEX86, CCaT, and GDGT-2/-3 values in glacial sediments could plausibly result from selective turnover of archaeal lipids and/or an archaeal ecology shift during the transition from the glacial lacustrine to the Holocene marine setting. Our in-depth molecular-isotopic examination of archaeal core and intact polar lipids provided new constraints on the sources and fate of archaeal lipids and their applicability in paleoceanographic and biogeochemical studies.
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    Introduction to special issue on seabed prospecting technology (2024)
    Wiley
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    Publication Date: 2024-04-03
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    CS2 Cycling in Seawater: Dark Production and UV Light Driven Consumption (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-03
    Description: Carbon disulfide (CS2) has recently gained attention as an important precursor for the atmospheric trace gas carbonyl sulfide (OCS), which delivers sulfur to the stratospheric sulfur layer and impacts the radiative budget of the Earth. CS2 is naturally produced in the ocean and emitted to the atmosphere. However, the magnitude of its marine emissions is only poorly constrained due to lacking understanding of its production and consumption processes. Here, we present incubation experiments with and without UV light treatment and provide evidence for a previously not considered UV-light-driven degradation process of CS2 in seawater, following first-order kinetics. In addition to its already known photochemical production process, CS2 production is found in the dark, depending on the amount of dissolved organic sulfur present in seawater. We provide novel production and consumption rates of CS2 in seawater that pave the way toward mechanistically quantifying marine emissions of this important trace gas. Key Points: - Carbon disulfide in seawater is degraded by UV light at time scales of days - Carbon disulfide is produced in seawater without UV light at rates comparable to photochemical production - Carbon disulfide dark production is limited by dissolved organic sulfur
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    Optical Characterization of Marine Aerosols Using a Morphologically Realistic Model With Varying Water Content: Implications for Lidar Applications and Passive Polarimetric Remote Sensing (2024)
    AGU (American Geological Society) | Wiley
    Details
    Publication Date: 2024-04-03
    Description: Retrieving the physical properties and water content of marine aerosols requires understanding the links between the particles' optical and microphysical properties. By using a morphologically realistic model with varying salt mass fractions fm, describing the transition from irregularly shaped, dry salt crystals to brine-coated geometries, optical properties relevant to polarimetric remote sensing are computed at wavelengths of 532 and 1,064 nm. The extinction cross section and its color ratio depend on particle size, but are insensitive to changes in fm; thus, measured extinction coefficients at two wavelengths contain information on both particle number and size. The lidar ratio's dependence on both size and wavelength has implications for inverting the lidar equation. The results suggest that active observations of the backscattering cross section's color ratio and the depolarization ratio, as well as, passive observations of the degree of linear polarization offer avenues to obtain the water content of marine aerosols. Key Points: - Modeled extinction coefficient of marine aerosol depends on particle radius and wavelength, but not on water content - The depolarization ratio and the color ratio of the backscattering cross section generally decrease with growing aerosol water content - The linear polarization peak near backscattering angles at NIR wavelength could be used in passive polarimetry to retrieve water content
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    Slow Slip Events in New Zealand: Irregular, yet Predictable? (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-03
    Description: Current earthquake forecasting approaches are mainly based on probabilistic assumptions, as earthquakes seem to occur randomly. Such apparent randomness can however be caused by deterministic chaos, rendering deterministic short‐term forecasts possible. Due to the short historical and instrumental record of earthquakes, chaos detection has proven challenging, but more frequently occurring slow slip events (SSE) are promising candidates to probe for determinism. Here, we characterize the SSE signatures obtained from GNSS position time series in the Hikurangi Subduction Zone (New Zealand) to investigate whether the seemingly random SSE occurrence is governed by chaotic determinism. We find evidence for deterministic chaos for stations recording shallow SSEs, suggesting that short‐term deterministic forecasting of SSEs, similar to weather forecasts, might indeed be possible over timescales of a few weeks. We anticipate that our findings could open the door for next‐generation SSE forecasting, adding new tools to existing probabilistic approaches. Plain Language Summary Since earthquakes appear to occur randomly, the currently available probabilistic predictions are based on past earthquake records. These predictions estimate the likelihood of an earthquake of a given magnitude occurring within a defined time period. In contrast to such probabilistic approaches, deterministic systems are fully predictable, albeit often confined to short time scales due to their potential chaotic behavior. Probing for deterministic predictability in the earthquake cycle is intractable due to the limited historical instrumental record. However, frequently occurring slow slip events ‐ captured by transient GNSS displacements that can last several weeks ‐ provide a unique opportunity to explore deterministic predictability in these types of slow earthquakes. By studying GNSS time series from various stations on New Zealand’s North Island, we have discovered evidence suggesting that these irregularly occurring slow slip events might be governed by chaotic determinism. This implies the potential to forecast both timing and magnitude of slow slip events a few weeks in advance using deterministic methods, much like we predict weather patterns. Consequently, our theoretical findings could therefore pave the way for innovative approaches to short‐term slow slip forecasting. Key Points Nonlinear analysis of GNSS displacement time series unveils evidence for deterministic chaos in slow slip events in New Zealand Our theoretical findings imply that irregularly occurring slow slip events could potentially be forecasted a few weeks in advance
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    Deep Fault‐Controlled Fluid Flow Driving Shallow Stratigraphically Constrained Gas Hydrate Formation: Urutī Basin, Hikurangi Margin, New Zealand (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-05
    Description: The Hikurangi Margin east of New Zealand's North Island hosts an extensive gas hydrate province with numerous gas hydrate accumulations related to the faulted structure of the accretionary wedge. One such hydrate feature occurs in a small perched upper‐slope basin known as Urutī Basin. We investigated this hydrate accumulation by combining a long‐offset seismic line (10‐km‐long receiver array) with a grid of high‐resolution seismic lines acquired with a 600‐m‐long hydrophone streamer. The long‐offset data enable quantitative velocity analysis, while the high‐resolution data constrain the three‐dimensional geometry of the hydrate accumulation. The sediments in Urutī Basin dip landward due to ongoing deformation of the accretionary wedge. These strata are clearly imaged in seismic data where they cross a distinct bottom simulating reflection (BSR) that dips counterintuitively in the opposite direction to the regional dip of the seafloor. BSR‐derived heat flow estimates reveal a distinct heat flow anomaly that coincides spatially with the upper extent of a landward‐verging thrust fault. We present a conceptual model of this gas hydrate system that highlights the roles of fault‐controlled fluid flow at depth merging into strata‐controlled fluid flow into the hydrate stability zone. The result is a layer‐constrained accumulation of concentrated gas hydrate in the dipping strata. Our study provides new insight into the interplay between deep faulting, fluid flow and gas hydrate formation within an active accretionary margin. Plain Language Summary Gas hydrates are ice‐like substances in which natural gas molecules are trapped in a cage of water molecules. They exist where the pressure is high, temperature is cold, and enough methane is present. These conditions exist in the marine environment at water depths greater than 300–500 m near sediment‐rich continental margins and in polar regions. It is important to study gas hydrates because they represent a significant part of the Earth's carbon budget and influence the flow of methane into the oceans and atmosphere. In this study, we use the seismic reflection method to generate images of gas‐hydrate‐bearing marine sediments east of New Zealand. Our data reveal an intriguing relationship between deep‐sourced fluid flow upward along a tectonic fault, and shallower flow through dipping sediments. This complex fluid flow pattern has led to disruption of the gas hydrate system and the formation of concentrated gas hydrate deposits within the dipping sediments. Our study highlights the relationships between relatively deep tectonic processes (faulting and fluid flow) and the shallow process of gas hydrate formation in an active subduction zone. Key Points A distinct gas‐hydrate to free‐gas transition is mapped using high‐ and low‐frequency seismic data Gas and hydrate accumulations in the Urutī Basin are controlled by the structural setting, ongoing deep‐sourced fluid flow, and near surface stratigraphy Regions of high modeled heat flow can be directly related to accumulations of gas and gas hydrates
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    Geomorphology and Age Constraints of Seamounts in the Cabo Verde Archipelago, and Their Relationship to Island Ages and Geodynamic Evolution (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-05
    Description: The Cabo Verde Archipelago is related to a mantle plume located close to the rotational pole of the African Plate. It consists of islands and seamounts arranged in a horseshoe‐shaped pattern open to the west, thus forming two volcanic chains, each with a weak east‐west age progression. High‐resolution swath bathymetry of 12 Cabo Verde seamounts is used here to assign each seamount to its pre‐shield, shield or post‐shield evolutionary stage, respectively. The eastern seamounts exhibit degraded and partially eroded morphologies, and are mainly in their post‐shield stage. A new 40 Ar‐ 39 Ar date for Senghor Seamount at 14.872 ± 0.027 Ma supports old ages for the eastern seamounts. The western seamounts generally exhibit younger volcanic‐edifice‐construction morphologies, showing fresh effusive and explosive volcanics, including rarely observed deep‐water explosive volcanism in the Charles Darwin Volcanic Field. Furthermore, the two previously unknown seamounts Sodade and Tavares in the westernmost termini of both volcanic chains exhibit pristine volcanic morphologies, in agreement with present‐day volcanism and seismic activity recorded from the western seamounts. The islands and seamounts rest on three submarine platforms to the east, northwest and southwest, respectively. Taken together, the seamount and island data suggest a shift in igneous activity from the eastern to the other platforms at about 8–6 Ma. However, the complex evolution pattern for both volcanic chains includes the simultaneous occurrence of pre‐shield or shield edifices at any time, followed by erosional and rejuvenation stages. The new seamount data still demonstrate ongoing westward submarine‐growth in both volcanic chains. Plain Language Summary The Cabo Verde volcanic islands and seamounts are located in the central Atlantic Ocean, ∼570 km off the west coast of Africa. They form a horseshoe‐shaped archipelago with two volcanic chains, which were formed by the African plate moving very slowly over a mantle hotspot (the Cabo Verde Plume). Both the northern and southern volcanic chains show weak east‐to‐west age progressions from ∼26 million years to the present day. This study uses underwater topographic data and observations/rock sampling via remotely operated vehicles from 12 submarine volcanic seamounts, including two previously unknown seamounts, collected during four research cruises in the Cabo Verde Archipelago. Geomorphology is used to classify each seamount as being in its pre‐shield, shield or post‐shield evolutionary stage, respectively. Cabo Verde islands and seamounts rest on three submarine morphological platforms, reflecting westward jumps of the main igneous activity, and also confirming the westward migration of the Cabo Verde hotspot beneath both volcanic chains. Key Points We present bathymetrical maps of 12, in part previously uncharted Cabo Verde seamounts Geomorphology reflects various evolutionary seamount stages and relative ages. Four older seamounts indicate late Quaternary sea level lowstands Islands and seamounts rest on three morphological platforms, indicating westward jumps of the main igneous activity
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    Can Glacial Sea‐Level Drop‐Induced Gas Hydrate Dissociation Cause Submarine Landslides? (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-05
    Description: We conducted two‐dimensional numerical simulations to investigate the mechanisms underlying the strong spatiotemporal correlation observed between submarine landslides and gas hydrate dissociation due to glacial sea‐level drops. Our results suggest that potential plastic deformation or slip could occur at localized and small scales in the shallow‐water portion of the gas hydrate stability zone (GHSZ). This shallow‐water portion of the GHSZ typically lies within the area enclosed by three points: the BGHSZ–seafloor intersection, the seafloor at ∼600 m below sea level (mbsl), and the base of the GHSZ (BGHSZ) at ∼1,050 mbsl in low‐latitude regions. The deep BGHSZ (〉1,050 mbsl) could not slip; therefore, the entire BGHSZ was not a complete slip surface. Glacial hydrate dissociation alone is unlikely to cause large‐scale submarine landslides. Observed deep‐water (much greater than 600 mbsl) turbidites containing geochemical evidence of glacial hydrate dissociation potentially formed from erosion or detachment in the GHSZ pinch‐out zone. Plain Language Summary Many submarine landslides spatiotemporally correlate with gas hydrate dissociation. However, direct mechanical evidence supporting whether the overpressure and deformation due to glacial sea‐level drop‐induced hydrate dissociation are adequate for triggering submarine landslides is lacking. Here, we present two‐dimensional thermal‐hydraulic‐chemical and geomechanical models of a gas‐hydrate system in response to glacial sea‐level drops and conduct sensitivity analyses of the model behavior under a wide range of key conditions from a global perspective. Our simulations suggest that glacial hydrate dissociation might induce plastic deformation or slip at localized and small scales only possibly within the shallow‐water portion of the hydrate stability zone. The deep part (〉1,050 m below sea level) of the bottom boundary of the hydrate stability zone could not slip; therefore, the entire bottom boundary of the hydrate stability zone was not a complete slip surface. We demonstrate that glacial hydrate dissociation alone is unlikely to trigger large‐scale submarine landslides. Our work highlights the vicinity of the upper limit of the hydrate stability zone (where the base of the hydrate stability zone intersects the seafloor) as an important area for investigating overpressure and focused fluid flow, localized plastic deformation or slip, and downslope sediment transport related to glacial hydrate dissociation. Key Points Glacial hydrate dissociation might cause potential plastic deformation or slip at localized and small scales in shallow parts of the GHSZ The large deformation surface at the BGHSZ boundary of the potential plastic deformation zone was not a complete slip surface Glacial sea‐level drop‐induced gas hydrate dissociation alone is unlikely to have caused large‐scale submarine landslides
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    A single Prochlorococcus ecotype dominates the tropical Bay of Bengal with ultradian growth (2024)
    Wiley
    Details
    Publication Date: 2024-04-10
    Description: The Bay of Bengal (BoB) spans 〉2.2 million km(2) in the northeastern Indian Ocean and is bordered by dense populations that depend upon its resources. Over recent decades, a shift from larger phytoplankton to picoplankton has been reported, yet the abundance, activity, and composition of primary producer communities are not well-characterized. We analysed the BoB regions during the summer monsoon. Prochlorococcus ranged up to 3.14 x 10(5) cells mL(-1 )in the surface mixed layer, averaging 1.74 +/- 0.46 x 10(5) in the upper 10 m and consistently higher than Synechococcus and eukaryotic phytoplankton. V1-V2 rRNA gene amplicon analyses showed the High Light II (HLII) ecotype formed 98 +/- 1% of Prochlorococcus amplicons in surface waters, comprising six oligotypes, with the dominant oligotype accounting for 65 +/- 4% of HLII. Diel sampling of a coherent water mass demonstrated evening onset of cell division and rapid Prochlorococcus growth between 1.5 and 3.1 div day-1, based on cell cycle analysis, as confirmed by abundance-based estimates of 2.1 div day(-1). Accumulation of Prochlorococcus produced by ultradian growth was restricted by high loss rates. Alongside prior Arabian Sea and tropical Atlantic rates, our results indicate Prochlorococcus growth rates should be reevaluated with greater attention to latitudinal zones and influences on contributions to global primary production.
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    Vertical acoustic blanking in seismic data from the German North Sea: a spotlight to shallow gas‐bearing incised channels (2024)
    Wiley
    Details
    Publication Date: 2024-04-10
    Description: Seismic data from the North Sea commonly show vertical acoustic blanking (VAB) often interpreted as fluid conduits with implications for Quaternary development. The robustness of this interpretation has long been controversial as the infill of tunnel valleys can also cause vertical blanking. Using 2D and 3D seismic data and sediment echosounder data from the German North Sea, we investigate VAB to determine a geological or imaging origin of these anomalies. We detected multiple VAB occurrences throughout the North Sea. 3D data from the Ducks Beak (‘Entenschnabel’) reveal a correlation of VAB with bright spots in incised channels directly below the seafloor. Large source–receiver distances allow imaging the subsurface below the channel without signal penetrating through it (undershooting). This method removes the blanking. Energy absorption by shallow biogenic gas trapped within the channels explains the observed VAB. Hence, the blanking represents an imaging artifact, highlighting the need for careful seismic processing with sufficient offset before interpreting such anomalies as fluid pathways. The channels belong to a postglacial channel system related to the now submerged lowlands of Doggerland. This work demonstrates the usability of mapping VAB to detect shallow features for paleo‐landscape reconstruction and identification of shallow gas for hazard assessments, for example.
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    Sizing mudsnails: Applying superpixels to scale growth detection under ocean warming (2024)
    Wiley
    Details
    Publication Date: 2024-04-10
    Description: 1. The expansion of scientific image data holds great promise to quantify individuals, size distributions and traits. Computer vision tools are especially powerful to automate data mining of images and thus have been applied widely across studies in aquatic and terrestrial ecology. Yet marine benthic communities, especially infauna, remain understudied despite their dominance of marine biomass, biodiversity and playing critical roles in ecosystem functioning. 2. Here, we disaggregated infauna from sediment cores taken throughout the spring transition (April-June) from a near-natural mesocosm setup under experimental warming (Ambient, +1.5 degrees C, +3.0 degrees C). Numerically abundant mudsnails were imaged in batches under stereomicroscopy, from which we automatically counted and sized individuals using a superpixel-based segmentation algorithm. Our segmentation approach was based on clustering superpixels, which naturally partition images by low-level properties (e.g., colour, shape and edges) and allow instance-based segmentation to extract all individuals from each image. 3. We demonstrate high accuracy and precision for counting and sizing individuals, through a procedure that is robust to the number of individuals per image (5-65) and to size ranges spanning an order of magnitude (〈750 mu m to 7.4 mm). The segmentation routine provided at least a fivefold increase in efficiency compared with manual measurements. Scaling this approach to a larger dataset tallied 〉40k individuals and revealed overall growth in response to springtime warming. 4. We illustrate that image processing and segmentation workflows can be built upon existing open-access R packages, underlining the potential for wider adoption of computer vision tools among ecologists. The image-based approach also generated reproducible data products that, alongside our scripts, we have made freely available. This work reinforces the need for next-generation monitoring of benthic communities, especially infauna, which can display differential responses to average warming.
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    The Arctic summer microbiome across Fram Strait: Depth, longitude, and substrate concentrations structure microbial diversity in the euphotic zone (2024)
    Wiley
    Details
    Publication Date: 2024-04-10
    Description: The long-term dynamics of microbial communities across geographic, hydrographic, and biogeochemical gradients in the Arctic Ocean are largely unknown. To address this, we annually sampled polar, mixed, and Atlantic water masses of the Fram Strait (2015–2019; 5–100 m depth) to assess microbiome composition, substrate concentrations, and oceanographic parameters. Longitude and water depth were the major determinants (~30%) of microbial community variability. Bacterial alpha diversity was highest in lower-photic polar waters. Community composition shifted from west to east, with the prevalence of, for example, Dadabacteriales and Thiotrichales in Arctic- and Atlantic-influenced waters, respectively. Concentrations of dissolved organic carbon peaked in the western, compared to carbohydrates in the chlorophyll-maximum of eastern Fram Strait. Interannual differences due to the time of sampling, which varied between early (June 2016/2018) and late (September 2019) phytoplankton bloom stages, illustrated that phytoplankton composition and resulting availability of labile substrates influence bacterial dynamics. We identified 10 species clusters with stable environmental correlations, representing signature populations of distinct ecosystem states. In context with published metagenomic evidence, our microbial-biogeochemical inventory of a key Arctic region establishes a benchmark to assess ecosystem dynamics and the imprint of climate change.
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    Taming the terminological tempest in invasion science (2024)
    Wiley
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    Publication Date: 2024-04-10
    Description: Standardised terminology in science is important for clarity of interpretation and communication. In invasion science - a dynamic and rapidly evolving discipline - the proliferation of technical terminology has lacked a standardised framework for its development. The result is a convoluted and inconsistent usage of terminology, with various discrepancies in descriptions of damage and interventions. A standardised framework is therefore needed for a clear, universally applicable, and consistent terminology to promote more effective communication across researchers, stakeholders, and policymakers. Inconsistencies in terminology stem from the exponential increase in scientific publications on the patterns and processes of biological invasions authored by experts from various disciplines and countries since the 1990s, as well as publications by legislators and policymakers focusing on practical applications, regulations, and management of resources. Aligning and standardising terminology across stakeholders remains a challenge in invasion science. Here, we review and evaluate the multiple terms used in invasion science (e.g. 'non-native', 'alien', 'invasive' or 'invader', 'exotic', 'non-indigenous', 'naturalised', 'pest') to propose a more simplified and standardised terminology. The streamlined framework we propose and translate into 28 other languages is based on the terms (i) 'non-native', denoting species transported beyond their natural biogeographic range, (ii) 'established non-native', i.e. those non-native species that have established self-sustaining populations in their new location(s) in the wild, and (iii) 'invasive non-native' - populations of established non-native species that have recently spread or are spreading rapidly in their invaded range actively or passively with or without human mediation. We also highlight the importance of conceptualising 'spread' for classifying invasiveness and 'impact' for management. Finally, we propose a protocol for classifying populations based on (i) dispersal mechanism, (ii) species origin, (iii) population status, and (iv) impact. Collectively and without introducing new terminology, the framework that we present aims to facilitate effective communication and collaboration in invasion science and management of non-native species.
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    Understanding the complex dynamics of zebra mussel invasions over several decades in European rivers: drivers, impacts and predictions (2024)
    Wiley
    Details
    Publication Date: 2024-04-11
    Description: The zebra mussel Dreissena polymorpha is one of the most successful, notorious, and detrimental aquatic invasive non-native species worldwide, having invaded Europe and North America while causing substantial ecological and socio-economic impacts. Here, we investigated the spatiotemporal trends in this species' invasion success using 178 macroinvertebrate abundance time series, containing 1451 records of D. polymorpha collected across nine European countries between 1972–2019. Using these raw (absolute) abundance data, we examined trends and drivers of occurrences and relative abundances of D. polymorpha within invaded communities. Meta-regression models revealed non-significant trends both at the European level and for the majority of the invaded countries, except for France (significant decreasing trend) and Hungary (marginally positive trend). At the European level, the number of D. polymorpha occurrences over time followed a flat-top bell-shaped distribution, with a steep increase between 1973–1989 followed by a plateau phase prior to significantly declining post-1998. Using a series of climatic and hydromorphological site-specific characteristics of invaded and uninvaded sites from two periods (1998–2002; 2011–2015), we found that native richness, non-native abundance, distance to the next barrier, and elevation were associated with the occurrence of D. polymorpha. We also found that higher native richness and lower latitude were related to lower relative abundances. Using Cohen's D as a measure of D. polymorpha impact, we found that biodiversity within the invaded sites was initially higher than in uninvaded ones, but then declined, suggesting differences in biodiversity trends across invaded and uninvaded sites. While our results emphasise the high invasion success of D. polymorpha, increasing stressors within the context of global change – particularly ongoing climate change – are likely to enhance invasion rates and the impact of D. polymorpha in the near future, exacerbated by the lack of timely and effective management actions.
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    Characterizing Offshore Freshened Groundwater Salinity Patterns Using Trans-Dimensional Bayesian Inversion of Controlled Source Electromagnetic Data: A Case Study From the Canterbury Bight, New Zealand (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-11
    Description: The study of offshore freshened groundwater (OFG) is gaining importance due to population growth and environmental pressure on coastal water resources. Marine controlled source electromagnetic (CSEM) methods can effectively map the spatial extent of OFG systems using electrical resistivity as a proxy. Integrating these resistivity models with sub-surface properties, such as host-rock porosity, allows for estimates of pore-water salinity. However, evaluating the uncertainty in pore-water salinity using resistivity models obtained from deterministic inversion approaches presents challenges, as they provide only one best-fit model, with no associated estimate of uncertainty. To address this limitation, we employ trans-dimensional Markov-Chain Monte-Carlo inversion on marine time-domain CSEM data, acquired in the Canterbury Bight, New Zealand. We integrate resistivity posterior probability distributions with borehole and seismic reflection data to estimate pore-water salinity with corresponding uncertainty estimates. The results highlight a low-salinity groundwater body in the center of the survey area, hosted by consecutive silty- and fine-sand layers approximately 20–60 km from the coast. The posterior probability distribution of resistivity models indicates freshening of the OFG body toward the shoreline within a permeable, coarse-sand layer 40–150 m beneath the seafloor, suggesting an active connection between the OFG body and the terrestrial groundwater system. The approach demonstrates how Bayesian inversion constrains the uncertainties in resistivity models and subsequently in pore-water salinity estimates. Our findings highlight the potential of Bayesian inversion to enhance our understanding of OFG systems and provide uncertainty constraints for hydrogeological modeling, thereby contributing to sustainable water resource development. Key Points A Bayesian workflow is employed to evaluate uncertainty in pore-water salinity estimates Offshore groundwater in Canterbury Bight stores freshened pore-water in fine-grained sediments, likely extending from the onshore aquifer Correlation between pore-water salinities and seismic-derived stratigraphy provides boundary conditions for hydrogeological modeling Plain Language Summary Geophysical methods that measure the electromagnetic properties of the Earth are effective in investigating freshwater sources beneath the seafloor. By combining the geophysical and geological information, we can better assess the quality of this groundwater. In this study, we develop a workflow that uses statistical methods to integrate electromagnetic observations with borehole and acoustic measurements along the eastern coast of the South Island of New Zealand. We aim to improve our understanding of the groundwater quality beneath the seafloor. Our research confirms the presence of freshened groundwater within the sandy seafloor up to 60 km from the coastline. Importantly, our observations indicate that the groundwater quality increases toward the coast. These findings are significant as they enhance the hydrogeological modeling of the groundwater system and suggest its potential as a source of freshwater.
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    PickBlue: Seismic phase picking for ocean bottom seismometers with deep learning (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-11
    Description: Detecting phase arrivals and pinpointing the arrival times of seismic phases in seismograms is crucial for many seismological analysis workflows. For land station data, machine learning methods have already found widespread adoption. However, deep learning approaches are not yet commonly applied to ocean bottom data due to a lack of appropriate training data and models. Here, we compiled an extensive and labeled ocean bottom seismometer (OBS) data set from 15 deployments in different tectonic settings, comprising ∼90,000 P and ∼63,000 S manual picks from 13,190 events and 355 stations. We propose PickBlue, an adaptation of the two popular deep learning networks EQTransformer and PhaseNet. PickBlue joint processes three seismometer recordings in conjunction with a hydrophone component and is trained with the waveforms in the new database. The performance is enhanced by employing transfer learning, where initial weights are derived from models trained with land earthquake data. PickBlue significantly outperforms neural networks trained with land stations and models trained without hydrophone data. The model achieves a mean absolute deviation of 0.05 s for P-waves and 0.12 s for S-waves, and we apply the picker on the Hikurangi Ocean Bottom Tremor and Slow Slip OBS deployment offshore New Zealand. We integrate our data set and trained models into SeisBench to enable an easy and direct application in future deployments. Key Points We assembled a database of ocean Bottom Seismometer (OBS) waveforms and manual P and S picks, on which we train PickBlue, a deep learning picker Our picker significantly outperforms pickers trained with land-based data with confidence values reflecting the likelihood of outlier picks The picker and database are available in the SeisBench platform, allowing easy and direct application to OBS traces and hydrophone records
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    Promoting effects of aluminum addition on chlorophyll biosynthesis and growth of two cultured iron‐limited marine diatoms (2024)
    Wiley | ASLO (Association for the Sciences of Limnology and Oceanography)
    Details
    Publication Date: 2024-04-15
    Description: Promoting effects of aluminum addition on chlorophyll biosynthesis and growth of two cultured iron‐limited marine diatoms Linbin Zhou CAS Key Laboratory of Tropical Marine Bio‐resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China Marine Biogeochemistry Division GEOMAR Helmholtz Centre for Ocean Research Kiel Germany University of Chinese Academy of Sciences Beijing China https://orcid.org/0000-0001-7230-4116 Fengjie Liu Marine Biogeochemistry Division GEOMAR Helmholtz Centre for Ocean Research Kiel Germany Grantham Institute—Climate Change and the Environment, Department of Life Sciences Imperial College London London UK Eric P. Achterberg Marine Biogeochemistry Division GEOMAR Helmholtz Centre for Ocean Research Kiel Germany Anja Engel Marine Biogeochemistry Division GEOMAR Helmholtz Centre for Ocean Research Kiel Germany https://orcid.org/0000-0002-1042-1955 Peter G.C. Campbell Institut National de la Recherche Scientifique Centre Eau Terre Environnement Quebec Canada https://orcid.org/0000-0001-7160-4571 Claude Fortin Institut National de la Recherche Scientifique Centre Eau Terre Environnement Quebec Canada https://orcid.org/0000-0002-2479-1869 Liangmin Huang CAS Key Laboratory of Tropical Marine Bio‐resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China University of Chinese Academy of Sciences Beijing China Yehui Tan CAS Key Laboratory of Tropical Marine Bio‐resources and Ecology, Guangdong Provincial Key Laboratory of Applied Marine Biology, South China Sea Institute of Oceanology Chinese Academy of Sciences Guangzhou China University of Chinese Academy of Sciences Beijing China Abstract Aluminum (Al) may play a role in the ocean's capacity for absorbing atmospheric CO 2 via influencing carbon fixation, export, and sequestration. Aluminum fertilization, especially in iron (Fe)‐limited high‐nutrient, low‐chlorophyll ocean regions, has been proposed as a potential CO 2 removal strategy to mitigate global warming. However, how Al addition would influence the solubility and bioavailability of Fe as well as the physiology of Fe‐limited phytoplankton has not yet been examined. Here, we show that Al addition (20 and 100 nM) had little influence on the Fe solubility in surface seawater and decreased the Fe bio‐uptake by 11–22% in Fe‐limited diatom Thalassiosira weissflogii in Fe‐buffered media. On the other hand, the Al addition significantly increased the rate of chlorophyll biosynthesis by 45–60% for Fe‐limited T. weissflogii and 81–102% for Fe‐limited Thalassiosira pseudonana , as well as their cell size, cellular chlorophyll content, photosynthetic quantum efficiency ( F v / F m ) and growth rate. Under Fe‐sufficient conditions, the Al addition still led to an increased growth rate, though the beneficial effects of Al addition on chlorophyll biosynthesis were no longer apparent. These results suggest that Al may facilitate chlorophyll biosynthesis and benefit the photosynthetic efficiency and growth of Fe‐limited diatoms. We speculate that Al addition may enhance intracellular Fe use efficiency for chlorophyll biosynthesis by facilitating the superoxide‐mediated intracellular reduction of Fe(III) to Fe(II). Our study provides new evidence and support for the iron–aluminum hypothesis.
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    Allochthonous Groundwater Microorganisms Affect Coastal Seawater Microbial Abundance, Activity and Diversity (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-15
    Description: Submarine groundwater discharge (SGD) is a globally important process supplying nutrients and trace elements to the coastal environment, thus playing a pivotal role in sustaining marine primary productivity. Along with nutrients, groundwater also contains allochthonous microbes that are discharged from the terrestrial subsurface into the sea. Currently, little is known about the interactions between groundwater‐borne and coastal seawater microbial populations, and groundwater microbes' role upon introduction to coastal seawater populations. Here, we investigated seawater microbial abundance, activity and diversity in a site strongly influenced by SGD. In addition, through laboratory‐controlled bottle incubations, we mimicked different mixing scenarios between groundwater and seawater. Our results demonstrate that the addition of 0.1 μm filtered groundwater stimulated heterotrophic activity and increased microbial abundance compared to control coastal seawater, whereas 0.22 μm filtration treatments induced primary productivity and Synechococcus growth. 16S rRNA gene sequencing showed a strong shift from a SAR11‐rich community in the control samples to Rhodobacteraceae dominance in the 〈0.1 μm treatment, in agreement with Rhodobacteraceae enrichment in the SGD field site. These results suggest that microbes delivered by SGD may affect the abundance, activity and diversity of intrinsic microbes in coastal seawater, highlighting the cryptic interplay between groundwater and seawater microbes in coastal environments, which has important implications for carbon cycling. Plain Language Summary Submarine groundwater discharge (SGD) is an important process where groundwater flows into the ocean along the coast. When the groundwater mixes with seawater, the microbes from both sources interact with each other, which can impact the diversity, activity, and amount of microbes in the coastal environment. Currently, little is known about how groundwater‐borne microbes affect marine microbial populations. Our research shows that when groundwater microbes are removed before mixing groundwater with seawater, the abundance and activity of certain microbes that consume organic matter significantly increase. Additionally, we noticed a significant difference in the types of microbes present between the sites where SGD occurs versus background (uninfluenced) coastal water, especially in terms of the microbes that consume organic matter. Overall, this study suggests that there is a connection between groundwater and seawater microbes, which can influence the delicate balance between organisms that produce carbon and those that consume it. This has important implications for how carbon cycles globally. Key Points Groundwater discharge into the coastal zone delivers both nutrients and allochthonous microbes Groundwater microbes interact with seawater populations, by which affecting the delicate autotroph‐heterotroph balance Subterranean microbial processes are key drivers of food webs, potentially affecting biogenic carbon fluxes in the ocean
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    Mechanisms Underpinning the Net Removal Rates of Dissolved Organic Carbon in the Global Ocean (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-15
    Description: With almost 700 Pg of carbon, marine dissolved organic carbon (DOC) stores more carbon than all living biomass on Earth combined. However, the controls behind the persistence and the spatial patterns of DOC concentrations on the basin scale remain largely unknown, precluding quantitative assessments of the fate of this large carbon pool in a changing climate. Net removal rates of DOC along the overturning circulation suggest lifetimes of millennia. These net removal rates are in stark contrast to the turnover times of days to weeks of heterotrophic microorganisms, which are the main consumers of organic carbon in the ocean. Here, we present a dynamic “MICrobial DOC” model (MICDOC) with an explicit representation of picoheterotrophs to test whether ecological mechanisms may lead to observed decadal to millennial net removal rates. MICDOC is in line with 〉40,000 DOC observations. Contrary to other global models, the reactivity of DOC fractions is not prescribed, but emerges from a dynamic feedback between microbes and DOC governed by carbon and macronutrient availability. A colimitation of macronutrients and organic carbon on microbial DOC uptake explains 〉70% of the global variation of DOC concentrations, and governs characteristic features of its distribution. Here, decadal to millennial net removal rates emerge from microbial processes acting on time scales of days to weeks, suggesting that the temporal variability of the marine DOC inventory may be larger than previously thought. With MICDOC, we provide a foundation for assessing global effects on DOC related to changes in heterotrophic microbial communities in a future ocean Plain Language Summary The ocean stores more carbon as dissolved organic compounds (DOC) than all animals and plants on land and the oceans combined. However, numerical models used for future climate scenarios lack an implementation of processes transforming DOC back to CO 2 by marine microorganisms. Here, we present a global dynamical ocean model that explicitly considers the processes of DOC degradation by marine microorganisms. In the present ocean, the availability of organic carbon but also nitrogen and phosphorus control the amount of carbon stored as DOC, as the lack of these nutrients inhibits its degradation by bacteria. The identification of these ecological controls allows a quantitative assessment of the fate of this large carbon reservoir in the future. The findings indicate that the marine DOC reservoir is potentially more dynamic than previously thought, since decadal to millennial scale net removal rates might be a result of microbial processes acting on shorter time scales Key Points A model to reconcile millennial‐scale bulk dissolved organic carbon degradation rates and short‐term microbial turnover times is presented Macronutrient colimitation can explain observed concentration patterns of dissolved organic carbon in the surface ocean Continuous microbial reworking suggests a higher temporal variability of the marine dissolved organic matter inventory than previously thought
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    “Seeing” Beneath the Clouds — Machine-Learning-Based Reconstruction of North African Dust Plumes (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-15
    Description: Mineral dust is one of the most abundant atmospheric aerosol species and has various far-reaching effects on the climate system and adverse impacts on air quality. Satellite observations can provide spatio-temporal information on dust emission and transport pathways. However, satellite observations of dust plumes are frequently obscured by clouds. We use a method based on established, machine-learning-based image in-painting techniques to restore the spatial extent of dust plumes for the first time. We train an artificial neural net (ANN) on modern reanalysis data paired with satellite-derived cloud masks. The trained ANN is applied to cloud-masked, gray-scaled images, which were derived from false color images indicating elevated dust plumes in bright magenta. The images were obtained from the Spinning Enhanced Visible and Infrared Imager instrument onboard the Meteosat Second Generation satellite. We find up to 15% of summertime observations in West Africa and 10% of summertime observations in Nubia by satellite images miss dust plumes due to cloud cover. We use the new dust-plume data to demonstrate a novel approach for validating spatial patterns of the operational forecasts provided by the World Meteorological Organization Dust Regional Center in Barcelona. The comparison elucidates often similar dust plume patterns in the forecasts and the satellite-based reconstruction, but once trained, the reconstruction is computationally inexpensive. Our proposed reconstruction provides a new opportunity for validating dust aerosol transport in numerical weather models and Earth system models. It can be adapted to other aerosol species and trace gases. Key Points: - We present the first fast reconstruction of cloud-obscured Saharan dust plumes through novel machine learning applied to satellite images - The reconstruction algorithm utilizes partial convolutions to restore cloud-induced gaps in gray-scaled Meteosat Second Generation-Spinning Enhanced Visible and Infrared Imager Dust RGB images - World Meteorological Organization dust forecasts for North Africa mostly agree with the satellite-based reconstruction of the dust plume extent
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    Impact of the North Atlantic Oscillation on the Decadal Variability of the Upper Subtropical‐Tropical Atlantic Ocean (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-22
    Description: In the northeastern tropical Atlantic, a region of high potential vorticity (PV) determines the size of the exchange window for the interior thermocline flow of the subtropical cell via its variations in strength and extent. Variability of this PV barrier has the potential to impact the ventilation of the tropical Atlantic on decadal timescales. Here, the impact of the North Atlantic Oscillation (NAO) on the PV barrier related to isopycnals within the thermocline of the subtropical-tropical Atlantic Ocean is assessed from Argo observations for the time period of 2006-2022. Relative to the negative NAO phase (2009-2010), during the positive NAO phase (2014-2019), the North Atlantic subtropical high and the northeast trades are intensified. Satellite-derived wind stress curl shows increased upwelling/downwelling on the equatorward/poleward side of the trade wind zone, respectively. In the subtropical-tropical Atlantic, a symmetric pattern of isopycnal heave is observed: rising isopycnals within 20 degrees N and 20 degrees S and sinking poleward of that. With rising isopycnals, the PV barrier in the northeastern tropical Atlantic becomes stronger. Analyses of geostrophic velocities and the Sverdrup streamfunction show that during the positive NAO phase there are increased equatorward velocities at thermocline level along the western boundary and reduced velocities through the interior as a result of intensified northeast trades and therefore a strengthened PV barrier. Intensified trades lead to enhanced subduction of thermocline waters and, independent of that, to a strengthened Equatorial Undercurrent transport as observed at the mooring site at 0 degrees, 23 degrees W, likely via the pulling effect of the subtropical cells. In the North Atlantic Ocean, subducted water from the subtropics has two possible pathways within the thermocline toward the equatorial region: the interior pathway and the pathway along the western boundary. The size of the exchange window between subtropics and tropics depends on the extent of a barrier zone in the eastern part of the basin that is associated with wind-driven upwelling of density surfaces. The North Atlantic Oscillation (NAO) is the dominant atmospheric climate mode in the North Atlantic and in this study, we show how the NAO impacts the barrier for the equatorward thermocline flow in the tropical Atlantic Ocean. During positive NAO phases (e.g., 2014-2019), density surfaces become shallower and strengthen the barrier, while during negative NAO phases (e.g., 2009-2010) the barrier weakens. Geostrophic velocity analysis reveals that during positive NAO phases more thermocline water is transported equatorward via the western boundary and less via the interior pathway. Additionally, observations from a mooring site at 0 degrees, 23 degrees W show stronger Equatorial Undercurrent transport as a result of intensified trade winds during positive NAO phases. Trade winds in the northeastern tropical Atlantic strengthen during positive phases of the North Atlantic Oscillation (NAO+) Potential vorticity barrier for the interior equatorward thermocline flow of the North Atlantic Subtropical Cell strengthens during NAO+ Annual subduction of thermocline water and Equatorial Undercurrent transport increase simultaneously from 2008 to 2018
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    Advancing Eddy Parameterizations: Dynamic Energy Backscatter and the Role of Subgrid Energy Advection and Stochastic Forcing (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-26
    Description: Viscosity in the momentum equation is needed for numerical stability, as well as to arrest the direct cascade of enstrophy at grid scales. However, a viscous momentum closure tends to over-dissipate eddy kinetic energy. To return excessively dissipated energy to the system, the viscous closure is equipped with what is called dynamic kinetic energy backscatter. The amplitude of backscatter is based on the amount of unresolved kinetic energy (UKE). This energy is tracked through space and time via a prognostic equation. Our study proposes to add advection of UKE by the resolved flow to that equation to explicitly consider the effects of nonlocality on the subgrid energy budget. UKE can consequently be advected by the resolved flow before it is reinjected via backscatter. Furthermore, we suggest incorporating a stochastic element into the UKE equation to account for missing small-scale variability, which is not present in the purely deterministic approach. The implementations are tested on two intermediate complexity setups of the global ocean model FESOM2: an idealized channel setup and a double-gyre setup. The impacts of these additional terms are analyzed, highlighting increased eddy activity and improved flow characteristics when advection and carefully tuned, stochastic sources are incorporated into the UKE budget. Additionally, we provide diagnostics to gain further insights into the effects of scale separation between the viscous dissipation operator and the backscatter operator responsible for the energy injection. Oceanic swirls or "eddies" have a typical size of 10-100 km, which is close to the smallest scales that global ocean models commonly resolve. For physical and numerical reasons, these models require the addition of artificial terms that influence the flow near its smallest scales. Common approaches have the drawback of introducing systematic loss of kinetic energy contained in the eddies, which leads to errors that also affect the oceanic circulation on global scales. In our research, we compensate for this error by returning some of the missing energy back into the simulation, using a so-called kinetic energy backscatter scheme. In this work, we continue the development of an already existing and successful backscatter scheme, adding certain improvements to the way energy is budgeted and returned to the flow: we ensure that the local energy budget is attached to each fluid parcel as it is transported by the large-scale flow, and we also add a random forcing term that mimics unknown sources of such energy to bring its statistical properties closer to reality. We demonstrate that these modifications effectively improve the characteristics of the simulated flow. Extension of the subgrid energy equation of the kinetic energy backscatter parameterization by adding advection and a stochastic term Both additional terms improve several flow characteristics in two idealized test cases, a channel and a double-gyre Scale analysis reveals the necessity of sufficient scale separation between viscous energy dissipation and energy injection via backscatter. Key Points: - Extension of the subgrid energy equation of the kinetic energy backscatter parameterization by adding advection and a stochastic term - Both additional terms improve several flow characteristics in two idealized test cases, a channel and a double-gyre - Scale analysis reveals the necessity of sufficient scale separation between viscous energy dissipation and energy injection via backscatter
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    Long-term culture system for deep-sea mussels Gigantidas childressi (2024)
    ASLO (Association for the Sciences of Limnology and Oceanography) | Wiley
    Details
    Publication Date: 2024-04-26
    Description: The simulation of deep-sea conditions in laboratories is technically challenging but necessary for experiments that aim at a deeper understanding of physiological mechanisms or host-symbiont interactions of deep-sea organisms. In a proof-of-concept study, we designed a recirculating system for long-term culture (〉2 yr) of deep-sea mussels Gigantidas childressi (previously Bathymodiolus childressi). Mussels were automatically (and safely) supplied with a maximum stable level of ~60 μmol L−1 methane in seawater using a novel methane–air mixing system. Experimental animals also received daily doses of live microalgae. Condition indices of cultured G. childressi remained high over the years, and low shell growth rates could be detected, too, which is indicative of positive energy budgets. Using stable isotope data, we demonstrate that G. childressi in our culture system gained energy, both, from the digestion of methane-oxidizing endosymbionts and from digesting particulate food (microalgae). Limitations of the system, as well as opportunities for future experimental approaches involving deep-sea mussels, are discussed.
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    Costs of Dust Collection by Trichodesmium : Effect on Buoyancy and Toxic Metal Release (2024)
    AGU (American Geophysical Union) | Wiley
    Details
    Publication Date: 2024-04-26
    Description: The marine cyanobacterium Trichodesmium has the remarkable ability to interact with and utilize air‐borne dust as a nutrient source. However, dust may adversely affect Trichodesmium through buoyancy loss and exposure to toxic metals. Our study explored the effect of desert dust on buoyancy and mortality of natural Red Sea puff‐shaped Trichodesmium thiebautii . Sinking velocities and ability of individual colonies to stay afloat with increasing dust loads were studied in sedimentation chambers. Low dust loads of up to ∼400 ng per colony did not impact initial sinking velocity and colonies remained afloat in the chamber. Above this threshold, sinking velocity increased linearly with the colony dust load at a slope matching prediction based on Stoke's law. The potential toxicity of dust was assessed with regards to metal dissolution kinetics, differentiating between rapidly released metals, which may impact surface blooms, and gradually released metals that may impact dust‐centering colonies. Incubations with increasing dust concentrations revealed colony death, but the observed lethal dose far exceeded dust concentrations measured in coastal and open ocean systems. Removal of toxic particles as a mechanism to reduce toxicity was explored using SEM‐EDX imaging of colonies incubated with Cu‐minerals, yet observations did not support this pathway. Combining our current and former experiments, we suggest that in natural settings the nutritional benefits gained by Trichodesmium via dust collection outweigh the risks of buoyancy loss and toxicity. Our data and concepts feed into the growing recognition of the significance of dust for Trichodesmium 's ecology and subsequently to ocean productivity. Plain Language Summary Trichodesmium spp. are abundant cyanobacteria, forming extensive blooms in low latitude warm oceans, and contribute significantly to carbon (C) and nitrogen (N) fixation, recycling and export. Desert dust deposited on the ocean surface was shown to supply Trichodesmium with the scarce micronutrient iron. Spherical, millimeter‐sized colonies of Trichodesmium from different ocean basins were reported to actively accumulate dust in their cores. While dust accumulation likely helps Trichodesmium obtain nutrients, it may come at a cost. Metals released from dust may induce toxicity and the dust weight could send Trichodesmium to the ocean depth. Our experimental study with natural Red Sea colonies examined some trade‐offs of dust accumulation. Links between dust load and colony buoyancy were examined in sedimentation experiments. Toxicity thresholds for surface blooms and dust‐accumulating colonies were determined from mortality assays and dust dissolution measurements. We found that metal‐induced toxicity to Trichodesmium is unlikely at typical oceanic dust fluxes, and that dust‐containing colonies can remain buoyant. At high loads, dust weight determined the colony's sinking velocity. Our findings and concepts can be extended to additional aerosols and Trichodesmium ‐rich habitats, and may assist in assessing Trichodesmium 's distribution, ecophysiology, and contribution to C or N transport to the deep ocean. Key Points Dust collected by Trichodesmium colonies from seawater as a nutrient source may result in metal toxification and buoyancy loss At moderate dust loads, colonies kept their buoyancy, but above 400 ng, sinking velocities increased linearly with dust loads Desert dust induced Trichodesmium mortality through toxic metal release, yet the lethal dose far exceeded oceanic dust concentrations
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    Pinewood (2024)
    Springer Nature | Palgrave Macmillan
    Details
    Publication Date: 2024-03-23
    Description: This open access book examines how Pinewood came to be Britain’s dominant film studio complex, focusing on key years following the Second World War. It presents a revisionist, micro history of the studio and its longevity during a particularly turbulentperiod, explaining Pinewood’s survival at a time when other major film studios such as Denham closed. This book also provides contemporary insights into how Pinewood’s technologies, practices, and filmmaking methods compared to Hollywood’s. Thirteen films produced in1946–47 are analysed in detail, tracking how economic pressures engendered many creative techniques and innovative technologies. Prevailing cultures of management and labour organization are foregrounded, as well as insights into being a studio employee. These are vividly brought to life through an in-depthfocus on the in-house studio magazine Pinewood Merry-Go-Round, which provides rare details of sports and leisure activities organized at the studios.
    Keywords: Pinewood ; Film history ; British cinema ; Film studios ; Innovation ; Technology ; Leisure cultures ; Labour history ; Set design ; thema EDItEUR::A The Arts::AT Performing arts::ATF Films, cinema ; thema EDItEUR::A The Arts::AT Performing arts::ATJ Television ; thema EDItEUR::A The Arts::AT Performing arts::ATF Films, cinema::ATFX Filmmaking and production: technical and background skills
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    Agroforestry as Climate Change Adaptation (2024)
    Springer Nature | Palgrave Macmillan
    Details
    Publication Date: 2024-01-16
    Description: This open access book provides multidisciplinary perspectives on the potential of agroforestry to mitigate the negative impacts of climate change on cocoa production. Against the backdrop of increasingly precarious farmer livelihoods, it focuses on cocoa-agroforestry in Ghana – the second largest producer of cocoa in the world. Taking the reader on a journey across experimental plots and on-farm studies, the book delivers a holistic understanding of cocoa-agroforestry. Chapters examine historical yield and climate interactions, the effects of heat and drought on cocoa plants and the role of differing shade trees on soil fertility, yields, pests and diseases. The book discusses the socioeconomics of shade tree management, including cost-benefits, tree rights and competition for natural resources emphasizing policy implications and recommendations. Taking a multidisciplinary approach to climate-agriculture interactions, the book provides an innovative understanding of agroforestry and perennial cropping systems that goes beyond the Ghanaian cocoa belt. It is of relevance to students, researchers, farmers, practitioners and policymakers working with agroforestry and climate change adaptation. This is an open access book.
    Keywords: cocoa ; climate change ; multidisciplinary ; mitigation ; adaptation ; resilience ; climate-smart agriculture ; Ghana ; shade trees ; farming systems ; ecophysiology ; land rights ; tree use rights ; smallholder farming ; rural livelihoods ; technical efficiency ; perennial crop ; profitability ; sustainability ; bic Book Industry Communication::J Society & social sciences::JP Politics & government::JPQ Central government::JPQB Central government policies ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RG Geography ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNF Environmental management ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNU Sustainability
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    Scripting Farming Simulator with Lua (2024)
    Springer Nature | Apress
    Details
    Publication Date: 2024-04-14
    Description: Create mods using the popular game Farming Simulator with Lua, a versatile scripting language that can run on various platforms and applications. This open access book is best suited for programmers who want to learn how to use Lua to write scripts that can enhance and extend the gameplay experience. You'll start by reviewing the basics of programming in Lua and then move on to advanced topics, such as object-oriented programming, vehicle and placeable specializations, network synchronization, and creating custom user interfaces. With step-by-step instructions and detailed explanations, you'll see how to create scripts that modify game mechanics and add new features to the game. The practical examples and projects are ideal for providing hands-on experience with Lua scripting. Whether you are a creator looking to take your skills to the next level or a game developer interested in learning a new programming language, Scripting Farming Simulator with Lua is the ultimate guide to mastering Lua scripting. What You'll Learn Understand the fundamentals of programming in LUA Implement a basic “Hello-World” mod Add a new graphical user interface to your mod Use hook scripts to extend base game features Publish your mod on the official Farming Simulator ModHub Who This Book Is For Creators who want to add new features to Farming Simulator; game developers who want to learn a new programming language for modding purposes, and anyone who wants to expand their knowledge of programming and scripting.
    Keywords: Modding ; Lua ; Farming Simulator ; Scripting ; GIANTS Editor ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMK Games development and programming
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    Quantifying Climate Risk and Building Resilience in the UK (2024)
    Springer Nature | Palgrave Macmillan
    Details
    Publication Date: 2024-01-16
    Description: This open access book draws together key research from the UK Climate Resilience programme. It focuses on topics central to the programme’s research agenda, including improved characterisation and quantification of climate risks, enhanced understanding of the management of climate risks, and the development and delivery of climate services. Key chapters address the challenges inherent to undertaking resilience research, including how to make the term ‘climate resilience’ usable and useful, co-producing research between academics, policy makers and practitioners, and engaging and communicating outside of academia. This book is unique in providing a concise and accessible overview of the programme’s key lessons, placing the findings into a wider context and it will inform future research, policy and practice agendas.
    Keywords: Climate risk ; climate adaptation ; risk ; resilience ; climate services ; climate resilience ; climate change ; bic Book Industry Communication::J Society & social sciences::JP Politics & government::JPQ Central government::JPQB Central government policies ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RG Geography::RGC Human geography ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RG Geography ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RB Earth sciences::RBP Meteorology & climatology
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    Religious Entanglements Between Germans and Indians, 1800–1945 (2024)
    Springer Nature | Palgrave Macmillan
    Details
    Publication Date: 2024-04-02
    Description: Religion as a form of cultural expression constitutes a critical element in the relationship between Germany and India. The discovery of Indian traditions in Germany and re-interpretations of those traditions in India fueled not only new theological and philosophical explorations, but also extensive innovations in the fields of music, dance, bodily experience, and political intervention. Seeking to uncover the enfolding of colonial thought structures through presentations of the Self, while placing them in the context of global colonial value chains that connected the peripheries with the centre, this interdisciplinary volume addresses India through the lens of an entangled relationship. Adopting the position that the acceleration of communication, technical development, and colonisation locally triggered re-interpretations of the religious sphere, This volume takes a look at the period from 1800 to the end of National Socialism, tracing the strands of an Indo-Germanic religion in the making as it goes along. A special emphasis is placed on the artistic expressions of religious experience including re-enactments of musical compositions and dance configurations, which were created to embody India in Germany. This is an open access book.
    Keywords: Kaiserreich ; Ahmadiyya Islam ; coloniality ; völkisch ; Madame Menaka ; thema EDItEUR::N History and Archaeology::NH History::NHD European history ; thema EDItEUR::N History and Archaeology::NH History::NHF Asian history ; thema EDItEUR::Q Philosophy and Religion::QR Religion and beliefs::QRA Religion: general::QRAC Comparative religion ; thema EDItEUR::N History and Archaeology::NH History::NHT History: specific events and topics::NHTB Social and cultural history
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    Surgery in and around the Orbit (2024)
    Springer Nature | Springer International Publishing
    Details
    Publication Date: 2024-04-03
    Description: This OpenAccess - textbook sheds new light on pathology in and around the orbit, which is typically an area where many medical disciplines overlap. Each physician brings a specific expertise, but the goal should be that the end result of all this input is much more than the sum of the parts. Collaboration, insight and overall knowledge of all parties involved are essential to achieve an optimal patient outcome. Oral and Maxillofacial surgeons have traditionally focused on the bony parts of the orbit, but usually have limited knowledge of the intricacies of binocular single vision, and for the Ophthalmologist it may be the other way around. In the past, scientific articles were often written from a single point of view, resulting in tunnel vision for the physician. The multidisciplinary approach to the orbit leads to an improvement in treatment that should not be underestimated and from which the patient benefits immensely. But especially forthe physician and the trainees, a multidisciplinary consultation is a real goldmine in which a lot can be gained. Not every medical problem needs to be tackled in a multidisciplinary framework, but problems around the eye socket often do. At Amphia Hospital in Breda, the Netherlands, more than fifteen years ago, a collaboration between Oral and Maxillofacial Surgeons, Endocrinologists, Radiologists and Ophthalmologists was initiated, which has proven to be very fruitful. The main focus was on Graves' Orbitopathy and orbital fractures, but problems associated with these conditions were also frequently encountered. For those who want to follow this example, or for those who are interested in both orbital surgery, anatomy or ophthalmological orbital issues, this book could prove to be complementary.
    Keywords: Orbit ; Treatment Protocol ; Graves ; Trauma ; Multidisciplinary ; Orbital Infectiom ; Orbital Anatomy ; OpenAccess ; thema EDItEUR::M Medicine and Nursing::MK Medical specialties, branches of medicine::MKE Dentistry::MKEP Oral and maxillofacial surgery ; thema EDItEUR::M Medicine and Nursing::MJ Clinical and internal medicine::MJQ Ophthalmology ; thema EDItEUR::M Medicine and Nursing::MF Pre-clinical medicine: basic sciences::MFC Anatomy ; thema EDItEUR::M Medicine and Nursing::MN Surgery::MNP Plastic and reconstructive surgery ; thema EDItEUR::M Medicine and Nursing::MJ Clinical and internal medicine::MJP Otorhinolaryngology (ENT)
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    Toward Good Simulation Practice (2024)
    Springer Nature | Springer Nature Switzerland
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    Publication Date: 2024-04-04
    Description: This open access book, the Community of Practice led by the VPH Institute, the Avicenna Alliance, and the In Silico World consortium has brought together 138 experts in In Silico Trials working in academia, the medical industry, regulatory bodies, hospitals, and consulting firms. Through a consensus process, these experts produced the first attempt to define some Good Simulation Practices on how to develop, evaluate, and use In Silico Trials. Good Simulation Practice constitutes an indispensable guide for anyone who is planning to engage at any title with In Silico Trials.
    Keywords: In Silico Trials ; In Silico Medicinal Chemistry ; In Silico Dreams ; Multiscale Modeling of the Skeletal System ; Brain and Human Body Modeling ; thema EDItEUR::M Medicine and Nursing::MQ Nursing and ancillary services::MQW Biomedical engineering ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAD Bioethics ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYM Computer modelling and simulation
    Language: English
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    Gender Equality, Climate Action, and Technological Innovation for Sustainable Development in Africa (2024)
    Springer Nature | Palgrave Macmillan
    Details
    Publication Date: 2024-04-06
    Description: This open access book explores the intersection of gender and climate change, suggests ways in which innovative technologies can accelerate climate relief actions, and offers strategies for integrating climate change initiatives into national policies and planning. By examining the devastating consequences of climate change on women and girls throughout the continent, the authors pose a crucial question: Does gender matter in climate change discussions in Africa? Political and social traditions have burdened women with greater vulnerability to the impacts of climate-related natural disasters, including violence, displacement, poverty, famine and lack of access to clean water. However, women are also key to effective and inclusive climate mitigation, adaptation, and decision-making. The authors provide a compelling discourse that identifi es the social and economic benefi ts for all citizens when genderinclusive policies shape equitable and targeted action plans, from mitigationto adaptation and funding. The UN’s SDG 13 calls for urgent action and commitment to combat climate change. The implementable and action-oriented propositions presented in this book will be of interest to students, educators, practitioners, third-sector actors, and policymakers committed to gender equality, sustainable development and climate action in Africa.
    Keywords: Sustainable Development Goals ; SDGs ; climate change ; women's empowerment ; gender inclusion ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBS Social groups, communities and identities::JBSF Gender studies, gender groups ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAF Ecological science, the Biosphere ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNP Pollution and threats to the environment::RNPG Climate change ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNU Sustainability ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBC Cultural and media studies::JBCC Cultural studies ; thema EDItEUR::1 Place qualifiers::1H Africa ; thema EDItEUR::K Economics, Finance, Business and Management::KJ Business and Management::KJD Business innovation ; thema EDItEUR::K Economics, Finance, Business and Management::KJ Business and Management::KJK International business
    Language: English
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    Surgery in and around the Orbit (2024)
    Springer Nature | Springer International Publishing
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    Publication Date: 2024-04-01
    Description: This OpenAccess - textbook sheds new light on pathology in and around the orbit, which is typically an area where many medical disciplines overlap. Each physician brings a specific expertise, but the goal should be that the end result of all this input is much more than the sum of the parts. Collaboration, insight and overall knowledge of all parties involved are essential to achieve an optimal patient outcome. Oral and Maxillofacial surgeons have traditionally focused on the bony parts of the orbit, but usually have limited knowledge of the intricacies of binocular single vision, and for the Ophthalmologist it may be the other way around. In the past, scientific articles were often written from a single point of view, resulting in tunnel vision for the physician. The multidisciplinary approach to the orbit leads to an improvement in treatment that should not be underestimated and from which the patient benefits immensely. But especially for the physician and the trainees, a multidisciplinary consultation is a real goldmine in which a lot can be gained. Not every medical problem needs to be tackled in a multidisciplinary framework, but problems around the eye socket often do. At Amphia Hospital in Breda, the Netherlands, more than fifteen years ago, a collaboration between Oral and Maxillofacial Surgeons, Endocrinologists, Radiologists and Ophthalmologists was initiated, which has proven to be very fruitful. The main focus was on Graves' Orbitopathy and orbital fractures, but problems associated with these conditions were also frequently encountered. For those who want to follow this example, or for those who are interested in both orbital surgery, anatomy or ophthalmological orbital issues, this book could prove to be complementary.
    Keywords: Orbit ; Treatment Protocol ; Graves ; Trauma ; Multidisciplinary ; Orbital Infectiom ; Orbital Anatomy ; OpenAccess ; thema EDItEUR::M Medicine and Nursing::MK Medical specialties, branches of medicine::MKE Dentistry::MKEP Oral and maxillofacial surgery ; thema EDItEUR::M Medicine and Nursing::MJ Clinical and internal medicine::MJQ Ophthalmology ; thema EDItEUR::M Medicine and Nursing::MF Pre-clinical medicine: basic sciences::MFC Anatomy ; thema EDItEUR::M Medicine and Nursing::MN Surgery::MNP Plastic and reconstructive surgery ; thema EDItEUR::M Medicine and Nursing::MJ Clinical and internal medicine::MJP Otorhinolaryngology (ENT)
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    Introduction to Digital Humanism (2024)
    Springer Nature | Springer Nature Switzerland
    Details
    Publication Date: 2024-04-14
    Description: This open access textbook introduces and defines digital humanism from a diverse range of disciplines. Following the 2019 Vienna Manifesto, the book calls for a digital humanism that describes, analyzes, and, most importantly, influences the complex interplay of technology and humankind, for a better society and life, fully respecting universal human rights. The book is organized in three parts: Part I “Background” provides the multidisciplinary background needed to understand digital humanism in its philosophical, cultural, technological, historical, social, and economic dimensions. The goal is to present the necessary knowledge upon which an effective interdisciplinary discourse on digital humanism can be founded. Part II “Digital Humanism – a System’s View” focuses on an in-depth presentation and discussion of the main digital humanism concerns arising in current digital systems. The goal of this part is to make readers aware and sensitive to these issues, including e.g. the control and autonomy of AI systems, privacy and security, and the role of governance. Part III “Critical and Societal Issues of Digital Systems” delves into critical societal issues raised by advances of digital technologies. While the public debate in the past has often focused on them separately, especially when they became visible through sensational events the aim here is to shed light on the entire landscape and show their interconnected relationships. This includes issues such as AI and ethics, fairness and bias, privacy and surveillance, platform power and democracy. This textbook is intended for students, teachers, and policy makers interested in digital humanism. It is designed for stand-alone and for complementary courses in computer science, or curricula in science, engineering, humanities and social sciences. Each chapter includes questions for students and an annotated reading list to dive deeper into the associated chapter material. The book aims to provide readers with as wide an exposure as possible to digital advances and their consequences for humanity. It includes constructive ideas and approaches that seek to ensure that our collective digital future is determined through human agency.
    Keywords: ethics in computer science ; responsible technologies ; legal issues and regulation ; data privacy ; digitalization ; digital economy ; digital humanism ; social responsibility ; thema EDItEUR::U Computing and Information Technology::UB Information technology: general topics::UBJ Digital and information technologies: social and ethical aspects ; thema EDItEUR::Q Philosophy and Religion::QD Philosophy::QDT Topics in philosophy::QDTQ Ethics and moral philosophy ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence ; thema EDItEUR::Q Philosophy and Religion::QD Philosophy::QDT Topics in philosophy::QDTS Social and political philosophy
    Language: English
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    Manufacturing Refused Knowledge in the Age of Epistemic Pluralism (2024)
    Springer Nature | Palgrave Macmillan
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    Publication Date: 2024-04-06
    Description: This open access book explores contemporary practices that challenge science, arguing that this matter cannot be simply disregarded as a new manifestation of “anti-scientism”. It scrutinizes the processes through which knowledge claims, refused by established institutions and the scientific community, seek legitimacy. Assuming an agnostic analytical stance, it explores the actors involved in such processes and their social worlds, their interactions with epistemic institutions, and the ways in which they enact such refused knowledge in their daily lives. Drawing on a three-year mixed-method research project, this collection demonstrates how refused knowledge can be seen as a distinct mode of knowing, employed in response to the uncertainties of everyday life. Thus, it offers a deeper understanding not only of how refused knowledge garners credibility, but also of how knowledge at large – including scientific knowledge – emerges from specific sociotechnical assemblages.
    Keywords: Science contestation ; Anti-science ; Symmetry Principle ; Expertise ; Epistemic Democracy ; Post-truth ; Science-denialism ; Refused Knowledge ; Actor–network Theory ; Situated Knowledge ; Feminist Epistemology ; Social Network Analysis ; Social Imaginaries ; Media Analysis ; Fringe Science ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology ; thema EDItEUR::J Society and Social Sciences ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBC Cultural and media studies::JBCC Cultural studies ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHM Anthropology ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBC Cultural and media studies::JBCT Media studies
    Language: English
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    Differential Geometry (2024)
    Springer Nature | Birkhäuser
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    Publication Date: 2024-04-04
    Description: This open access book covers the main topics for a course on the differential geometry of curves and surfaces. Unlike the common approach in existing textbooks, there is a strong focus on variational problems, ranging from elastic curves to surfaces that minimize area, or the Willmore functional. Moreover, emphasis is given on topics that are useful for applications in science and computer graphics. Most often these applications are concerned with finding the shape of a curve or a surface that minimizes physically meaningful energy. Manifolds are not introduced as such, but the presented approach provides preparation and motivation for a follow-up course on manifolds, and topics like the Gauss-Bonnet theorem for compact surfaces are covered.
    Keywords: Differential Geometry ; Surfaces ; Curves ; Elastic ; Minimal ; Willmore ; Variational Calculus ; Riemannian Geometry ; thema EDItEUR::P Mathematics and Science::PB Mathematics::PBM Geometry::PBMP Differential and Riemannian geometry
    Language: English
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    Peter Schroeder-Heister on Proof-Theoretic Semantics (2024)
    Springer Nature | Springer Nature Switzerland
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    Publication Date: 2024-04-08
    Description: This open access book is a superb collection of some fifteen chapters inspired by Schroeder-Heister's groundbreaking work, written by leading experts in the field, plus an extensive autobiography and comments on the various contributions by Schroeder-Heister himself. For several decades, Peter Schroeder-Heister has been a central figure in proof-theoretic semantics, a field of study situated at the interface of logic, theoretical computer science, natural-language semantics, and the philosophy of language. The chapters of which this book is composed discuss the subject from a rich variety of angles, including the history of logic, the proper interpretation of logical validity, natural deduction rules, the notions of harmony and of synonymy, the structure of proofs, the logical status of equality, intentional phenomena, and the proof theory of second-order arithmetic. All chapters relate directly to questions that have driven Schroeder-Heister's own research agenda and to which he has made seminal contributions. The extensive autobiographical chapter not only provides a fascinating overview of Schroeder-Heister's career and the evolution of his academic interests but also constitutes a contribution to the recent history of logic in its own right, painting an intriguing picture of the philosophical, logical, and mathematical institutional landscape in Germany and elsewhere since the early 1970s. The papers collected in this book are illuminatingly put into a unified perspective by Schroeder-Heister's comments at the end of the book. Both graduate students and established researchers in the field will find this book an excellent resource for future work in proof-theoretic semantics and related areas.
    Keywords: Proof-theoretic Semantics ; Logical Constants ; Proof Theory ; Deductive Logic ; Constructive Logic ; Intuitionistic Logic ; Mathematical Logic ; Peter Schroeder-Heister ; Gerhard Gentzen ; Gottlob Frege ; thema EDItEUR::Q Philosophy and Religion::QD Philosophy ; thema EDItEUR::Q Philosophy and Religion::QD Philosophy::QDT Topics in philosophy::QDTL Philosophy: logic ; thema EDItEUR::C Language and Linguistics::CF Linguistics::CFA Philosophy of language ; thema EDItEUR::P Mathematics and Science::PB Mathematics::PBB Philosophy of mathematics ; thema EDItEUR::P Mathematics and Science::PB Mathematics::PBC Mathematical foundations ; thema EDItEUR::C Language and Linguistics::CB Language: reference and general::CBX Language: history and general works ; thema EDItEUR::Q Philosophy and Religion::QD Philosophy ; thema EDItEUR::Q Philosophy and Religion::QD Philosophy::QDT Topics in philosophy::QDTL Philosophy: logic ; thema EDItEUR::C Language and Linguistics::CF Linguistics::CFA Philosophy of language ; thema EDItEUR::P Mathematics and Science::PB Mathematics::PBB Philosophy of mathematics ; thema EDItEUR::P Mathematics and Science::PB Mathematics::PBC Mathematical foundations ; thema EDItEUR::C Language and Linguistics::CB Language: reference and general::CBX Language: history and general works
    Language: English
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    Biographical Life Course Research (2024)
    Springer Nature | Palgrave Macmillan
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    Publication Date: 2024-04-11
    Description: This open access book explores an approach that connects individual and societal processes throughout history and shifting trends in sociological perspectives, influenced by C. Wright Mills’ theories of time and temporality. It traces its origins from American pragmatist thought and Chicago qualitative sociology in the early 20th century to the revival of biographical research in European and American sociology during the 1970s. The book shows empirical studies from this vibrant research approach can bridge methodological gaps between qualitative and quantitative biographical studies, applicable to various topics like class, gender, ethnicity, and intergenerational dimensions.
    Keywords: Life course ; Biography ; Mixed-methods ; Case studies ; Temporality ; History-biography dynamic ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RG Geography::RGC Human geography ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology::JHBK Sociology: family and relationships ; thema EDItEUR::C Language and Linguistics::CF Linguistics::CFG Semantics, discourse analysis, stylistics
    Language: English
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    Hochschulweiterbildung zwischen Wissenschaftsinstitution und Weiterbildungsmarkt (2024)
    Springer Nature | Springer Fachmedien Wiesbaden
    Details
    Publication Date: 2024-04-03
    Description: Dieses Open-Access-Buch basiert auf einer mikrosoziologischen Analyse des Akteursverhaltens in der Programmplanung und -entwicklung der Weiterbildung an Schweizer Hochschulen. Diese ist in einen ausgeprägten Weiterbildungsmarkt eingebettet, in welchem öffentliche und private Anbieter miteinander konkurrieren. Die Marktorientierung vollzieht sich dabei auf unterschiedlichen Ebenen, indem sowohl Wettbewerbsdynamiken als auch Berufspraxis und Gesellschaft als prioritäre Themenkontexte der Nachfragerinnen und Nachfrager hochschulischer Weiterbildungen zu berücksichtigen sind. Auf der Ebene der Hochschulen ergibt sich für die Akteure und Akteurinnen in der Programmplanung und -entwicklung ein Spannungsfeld, da sowohl Funktionslogiken der Wissenschaftsinstitution als auch Mechanismen des Weiterbildungsmarktes in der Hochschulweiterbildung wirksam werden. Die Programmverantwortlichen üben in diesem Umfeld eine aktive und gestaltende Rolle aus, indem sie Weiterbildungen inhaltlich entwickeln und marktbezogen vertreiben. Als methodologischer Zugang dient die Konventionenökonomie. Es wird untersucht, wie verantwortliche Akteure und Akteurinnen in der Weiterbildung an Hochschulen ihre Planungsentscheide auf der Basis von Konventionen begründen, und welchem Qualitätsverständnis zu hochschulischen Weiterbildungen dabei gefolgt wird.
    Keywords: Hochschulweiterbildung ; Wirtschaftssoziologie ; Bildungsmanagement ; Konventionenökonomie ; Erwachsenenbildung ; Weiterbildungsforschung ; Hochschulbildung ; Weiterbildungsmanagement ; Konventionen ; Bildungssoziologie ; Konventionentheorie ; thema EDItEUR::J Society and Social Sciences::JN Education::JNM Higher education, tertiary education
    Language: German
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    Segregierte Quartiere – segregierte Freizeiträume (2024)
    Springer Nature | Springer Fachmedien Wiesbaden
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    Publication Date: 2024-03-29
    Description: Dieses Open-Access-Buch stellt vor dem Hintergrund einer zunehmenden sozialen Segregation in deutschen Städten die Frage nach den Auswirkungen dieser sich verschärfenden räumlichen Polarisierung auf die Sozialisation von Jugendlichen. Die Arbeit geht dabei über den quartiersfixierten Ansatz der Nachbarschaftseffektforschung hinaus und untersucht, welche Räume in der Stadt von Berliner Jugendlichen in ihrer Freizeit tatsächlich genutzt werden und damit für sie sozialisationsrelevant sind. Der Fokus liegt auf dem Einfluss, den einerseits individuelle Merkmale, wie Geschlecht und sozialer Status, und andererseits die Stadtstruktur auf das räumliche Freizeitverhalten der Jugendlichen haben. Zentral ist dabei die Frage, ob sich die soziale Segregation der Wohnquartier auch in den Aktivitätsräumen der Jugendlichen widerspiegelt. Um diese Frage zu beantworten, werden Daten mit einer eigens für diese Arbeit entwickelten innovativen räumlich-quantitativen Befragung erhoben, vor dem Hintergrund der physischen und sozialräumlichen Struktur Berlins ausgewertet und durch qualitative Leitfadeninterviews ergänzt.
    Keywords: Jugendliche ; Sozialisation ; Mixed Methods ; Freizeitverhalten ; Berlin ; Segregation ; Nachbarschaftseffekte ; Aktionsräume ; soziale Segregation ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology
    Language: German
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    Basic Modeling and Theory of Creep of Metallic Materials (2024)
    Springer Nature | Springer Nature Switzerland
    Details
    Publication Date: 2024-04-11
    Description: This open access book features an in-depth exploration of the intricate creep behavior exhibited by metallic materials, with a specific focus on elucidating the underlying mechanical properties governing their response at elevated temperatures, particularly in the context of polycrystalline alloys. Traditional approaches to characterizing mechanical properties have historically relied upon empirical models replete with numerous adjustable parameters, painstakingly tuned to match experimental data. While these methods offer practical simplicity, they often yield outcomes that defy meaningful extrapolation and application to novel systems, invariably necessitating the recalibration of parameters afresh. In stark contrast, this book compiles a compendium of models sourced from the scientific literature, meticulously crafted through ab initio methodologies rooted in fundamental physical principles. Notably, these models stand apart by their conspicuous absence of adjustable parameters. This pioneering effort is envisioned as a groundbreaking initiative, marking the first of its kind in the field. The resulting models, bereft of arbitrary tuning, offer a level of predictability hitherto unattained. Notably, they provide a secure foundation for ascertaining operational mechanisms, contributing significantly to enhancing our understanding of material behavior in high-temperature environments. This open access book is a valuable resource for researchers and seasoned students engaged in the study of creep phenomena in metallic materials. Readers will find a comprehensive exposition of these novel, parameter-free models, facilitating a deeper comprehension of the intricate mechanics governing material deformation at elevated temperatures.
    Keywords: Stress strain curves ; Stationary creep ; Dislocation model ; Creep with low stress exponents ; Solid solution hardening ; Precipitation hardening ; Modelling of subgrain formation ; Grain boundary sliding ; Brittle rupture ; Ductile rupture ; Hart's criterion ; Cavitation ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science ; thema EDItEUR::P Mathematics and Science::PH Physics::PHF Materials / States of matter
    Language: English
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    Quantitative Sustainability (2024)
    Springer Nature | Springer International Publishing
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    Publication Date: 2024-04-05
    Description: This open access book focuses on how scientific methodologies can help industrial managers, entrepreneurs and policymakers handle the 17 Sustainable Development Goals in an efficient and realistic way. It also offers an operative scheme for scientists to overcome their discipline barriers. Is interdisciplinarity an intrinsic research value or is it merely instrumental for handling the increasing flux of open problems that sustainability poses to science?Can these problems of sustainability be solved with what the authors already know? Is it just a matter of having the right people at the table and giving them sufficient resources, or is it something more? Is meeting the needs of the present without compromising those of future generations a scientific definition of sustainable development? Questions similar to those posed in the sixties regarding complexity must be asked about sustainability today. In addition, the new data science includes powerful tools for making novelquantitative predictions about future sustainability indicators, an open problem that the book discusses. This book is primarily addressed to Ph.D. students, postdocs and senior researchers in the Life and Hard Science (LHS) and Social Sciences and Humanities (SSH) disciplines, as well as professionals of the primary, secondary and tertiary industrial sectors.
    Keywords: Sustainable Development Goals ; Data science in Sustainability ; SDG Targets ; Data Science in Sustainable Development Goals ; Complex Network ; Food Security ; Climate Changes ; Environmental Changes ; Human Ecology ; Sustainable Economy ; Space Science ; Platform For a Science-industry Dialogue ; Industrial Processes ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GP Research and information: general::GPF Information theory::GPFC Cybernetics and systems theory ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNU Sustainability ; thema EDItEUR::U Computing and Information Technology::UN Databases ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAF Ecological science, the Biosphere ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNP Pollution and threats to the environment::RNPG Climate change ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNF Environmental management::RNFF Food security and supply ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment
    Language: English
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    Paradigmenwechsel in Bau- und Immobilienwirtschaft (2024)
    Springer Nature | Springer Spektrum
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    Publication Date: 2024-04-04
    Description: Der vorliegende Open-Access-Band gibt einen umfassenden Einblick in aktuelle europäische und nationale Anforderungen zur Kreislaufwirtschaft im Bau- und Immobilienwesen. Es beleuchtet die Entwicklungen der Gebäudezertifizierungen sowie die aktuellen Möglichkeiten digitaler Gebäudepässe. Zudem wird erörtert, wie Building Information Modelling BIM verwendet werden kann, um Bauwerksdaten schnell und strukturiert zur Verfügung zu stellen und langgfrisitig entlang der Wertschöpfungskette zu dokumentieren. In einem verlinkten online-Artikel findet sich ergänzend die Beschreibung eines Demoprojektes und eine ausführliche Kriterienliste zum kreislauffähigen Planen und Bauen.
    Keywords: Kreislauffähiges Bauen ; Digitalisierung ; Building Information Modelling ; Kreislaufwirtschaft ; Prinzipien der Kreislauffähigkeit ; Gebäudezertifizierungssysteme ; Gebäudepass ; thema EDItEUR::P Mathematics and Science ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology
    Language: German
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    Gongsheng Across Contexts (2024)
    Springer Nature | Palgrave Macmillan
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    Publication Date: 2024-04-08
    Description: This open access book sheds light on the term gongsheng/kyōsei, which is used in Chinese and Japanese to not only translate “symbiosis” in biology but also broadly deployed in philosophical, social and political contexts. It is a cross-contextual attempt to study the foundation of gongsheng/kyōsei as a philosophy of co-becoming, with exploration of its significance for thinking about the planetary challenges of our times.
    Keywords: Symbiosis ; Confucianism ; Daoism ; Buddhism ; Human society ; Gong Sheng ; Chinese philosophy ; Mutual Embeddedness ; Environmental philosophy ; Ecological anthropology ; Human-machine relationship ; Co-existence ; Co-becoming ; Social cohesion ; thema EDItEUR::Q Philosophy and Religion::QD Philosophy ; thema EDItEUR::Q Philosophy and Religion::QR Religion and beliefs::QRA Religion: general ; thema EDItEUR::Q Philosophy and Religion::QD Philosophy ; thema EDItEUR::Q Philosophy and Religion::QR Religion and beliefs::QRA Religion: general
    Language: English
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    Cycling Through the Pandemic (2024)
    Springer Nature | Springer International Publishing
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    Publication Date: 2024-04-04
    Description: This open access book provides insight on how the tactical urbanism has the capacity to influence change in mobility practices such as cycling. COVID-19 crisis prompted the public authorities to rethink the use of public space in order to develop means of transport that are both efficient and adapted to the health context and their effects on cycling practices in Europe, North, and South America. Its contributors collectively reveal and evidence through policies analysis, mapping, and innovative qualitative analysis bridging video and interviews, how those new infrastructures and policies can be a trigger for change in a context of mobility transition. This book provides an important element on the way local authorities can act in a quicker and more agile way. While some decisions are specific to the context of the beginning of the pandemic, the analysis offers lessons on the way to implement the transition toward a low-carbon mobility, on the importance of processes based on trials and errors, on the political stakes of reallocating road space.
    Keywords: Tactical Urbanism ; Mobility Policies ; Urban Planning and COVID-19 ; Urban Geography and Urbanism ; Landscape/Regional and Urban Planning ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPR Regional, state and other local government ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPQ Central / national / federal government::JPQB Central / national / federal government policies ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAF Ecological science, the Biosphere
    Language: English
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    Vom Hauen und Stechen (2024)
    Springer Nature | J.B. Metzler
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    Publication Date: 2024-04-04
    Description: Dieses Open-Access-Buch beschäftigt sich mit der Zuordnung der Gebrauchsspuren bei jung- und endneolithischen Knochenartefakten zu einem Werkmaterial oder einer Funktion. In der Regel werden Knochen-, Geweih- und Zahnartefakte nur typologisch untersucht. Dabei werden Begriffe wie etwa „Meißel“, „Pfriem“, „Ahle“, „Schaber“ aufgrund der Form der Artefakte vergeben, ohne jedoch die tatsächliche Funktion bzw. den Verwendungszweck näher zu untersuchen. Experimentalarchäologische Untersuchungen haben gezeigt, dass es durchaus Unterschiede in den Gebrauchsspuren gibt, die wiederum Rückschlüsse auf den tatsächlichen Gebrauch und das bearbeitete Material ermöglichen. Die bisherigen Experimente haben gezeigt, dass sich die Gebrauchsspuren in drei Gruppen einteilen lassen, die wichtige Hinweise auf die Art der Bewegung oder die Handhabung und damit auf das bearbeitete Material geben. Zudem haben die Untersuchungen von nachgebauten Werkzeugen und Artefakten ergeben, dass die Mikrospuren direkt miteinander verglichen werden können.
    Keywords: Use Wear Analysis ; Herstellungsspuren ; Gebrauchsspuren ; Knochenartefakte ; Funtkionsanalyse ; Feuchtbodensiedlungen ; Neolithikum ; Experimentelle Archäologie ; thema EDItEUR::N History and Archaeology::NK Archaeology
    Language: German
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    Industry 4.0 and the Road to Sustainable Steelmaking in Europe (2024)
    Springer Nature | Springer International Publishing
    Details
    Publication Date: 2024-04-11
    Description: This open access book gathers original contributions focused on the transition of the European steel industry to Industry 4.0. It not only investigates how Industry 4.0 can enhance productivity, cost-saving, and sustainability in the steel industry but also helps to comprehend its broad consequences on employment, education and training, human resources, economic resilience and decarbonisation. The content engages with the international debate on Industry 4.0 through the lens of the steel industry from a multidisciplinary perspective. It encourages a scientifically grounded critical approach and includes contributions from humanities and technical disciplines, with a focus on the social dimensions of the phenomenon. This book draws strength from up-to-date international research projects and adopts a strong industry-based perspective, providing a thorough description and analysis of the state of the art of the European steel industry. It also analyzes the trends, outcomes, opportunities, and criticalities arising with the transition to the Industry 4.0 paradigm. The book is primarily based on the results of the European Steel Skills Agenda (ESSA) skills alliance project co-funded by the Erasmus+ programme of the European Union and supported by the European Steel Technology Platform (ESTEP). This is an open access book.
    Keywords: Industry 4.0 ; Steel Industry ; Skill Formation ; Recruitment ; Technological Innovation ; Workforce Development ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science
    Language: English
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    Sozialrechtsbezogene Beratung (2024)
    Springer Nature | Springer VS
    Details
    Publication Date: 2024-01-16
    Description: In diesem Open-Access-Buch wird erstmals die sozialrechtsbezogene Beratung von Verbänden als Strategie im Zugang zum Recht in die Tiefe gehend analysiert und anhand von drei exemplarisch dargestellten Beratungssituationen die Herstellung eines Zugangs zum System sozialer Sicherung rekonstruiert. Die Beratung der Sozialverbände zu sozialen Problemlagen ist ein historisch gewachsenes Gefüge im Sozialstaat. Sie tragen mit ihrer Beratung dazu bei, dass Bürger:innen im Bedarfsfall Barrieren im Zugang zum System sozialer Sicherung überwinden und auf die sozialen Sicherungssysteme zugreifen können. Die Gestaltung des Beratungssettings ist dabei von ausschlaggebender Bedeutung.
    Keywords: sozialrechtsbezogene Beratung ; Rechtsmobilisierung ; Zugang zum Recht ; System sozialer Sicherung ; Sozialverbände ; Sozialrecht ; bic Book Industry Communication::J Society & social sciences
    Language: German
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    Kulturelle Teilhabe durch Immaterielles Kulturerbe (2024)
    Springer Nature | Springer Fachmedien Wiesbaden
    Details
    Publication Date: 2024-03-14
    Description: Dieses Open-Access-Buch gibt einen umfassenden Überblick über die Verfahren und Abläufe der nationalen Umsetzung der UNESCO-Konvention zur Erhaltung des immateriellen Kulturerbes in Deutschland. Die Untersuchung konzentriert sich auf die Jahre unmittelbar vor und nach dem deutschen Beitritt zum Übereinkommen im Jahre 2013. Durch eine Politikfeldanalyse wird insbesondere der Frage nachgegangen, ob und wie die neue Aufgabe vom übergreifenden Ziel des Politikfelds, kulturelle Teilhabe zu steigern, beeinflusst wurde. Die Kombination aus einer Insiderperspektive des Autors mit einem analytischen Forschungsansatz dürfte für Vertreterinnen und Vertreter der Praxis des deutschen Mehrebenensystems der Kulturpolitik ebenso interessant sein wie für andere Forschende im Feld.
    Keywords: UNESCO-Konvention zur Erhaltung des immateriellen Kulturerbes ; Auswärtige Kulturpolitik ; Kulturelle Teilhabe ; Immaterielles Kulturerbe in Deutschland ; UNESCO-Kulturerbe in Deutschland ; Kulturpolitik-Instrumente im internationalen Vergleich ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFC Cultural studies ; bic Book Industry Communication::J Society & social sciences::JP Politics & government
    Language: German
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    Progress in Landslide Research and Technology, Volume 2 Issue 2, 2023 (2024)
    Springer Nature | Springer Nature Switzerland
    Details
    Publication Date: 2024-01-17
    Description: This open access book provides an overview of the progress in landslide research and technology and is part of a book series of the International Consortium on Landslides (ICL). The book provides a common platform for the publication of recent progress in landslide research and technology for practical applications and the benefit for the society contributing to the Kyoto Landslide Commitment 2020, which is expected to continue up to 2030 and even beyond to globally promote the understanding and reduction of landslide disaster risk, as well as to address the 2030 Agenda Sustainable Development Goals.
    Keywords: Landslide Disaster Mitigation Measures ; Monitoring and Early Warning ; Testing, Modeling and Risk Assessment ; Frontiers of Landslide Science and Applications ; Landslide Mechanism and Dynamics ; Catastrophic Landslides ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNR Natural disasters ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RB Earth sciences ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RB Earth sciences::RBG Geology & the lithosphere ; bic Book Industry Communication::U Computing & information technology::UB Information technology: general issues ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RG Geography ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RB Earth sciences::RBP Meteorology & climatology
    Language: English
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    Measuring Gender Equality (2024)
    Springer Nature | Springer International Publishing
    Details
    Publication Date: 2024-03-14
    Description: In this open access book, the editors explicitly address the issue of measuring gender equality. The book introduces readers to basic concepts of gender equality, equity and equal opportunities, then discusses measuring these phenomena, the methods of constructing indicators, and reviews the main indicators that have been proposed at the international level to measure gender equality. It then sets the theoretical discussions against the findings from a Jean Monnet project financed by the European Union to highlight the importance of a regional analysis of gender equality in four main study areas: Italy, Spain, France and Germany. The results make it clear that it is necessary to move from the purely national perspective hitherto used in gender equality analyses to a regional one because differences can be highly pronounced even within the same country. This is a self-contained volume requiring limited statistical expertise for the reader and is aimed at social researchers and policymakers who wish to address gender equality from a quantitative perspective.
    Keywords: Gender Equality ; Gender Gap ; Indicators ; Measurement ; Policy Making ; European Union ; Complexity ; Regional Studies ; Gender Responsive ; Fiscal Policies ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFS Social groups::JFSJ Gender studies, gender groups ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology::JHBC Social research & statistics ; bic Book Industry Communication::M Medicine::MB Medicine: general issues::MBN Public health & preventive medicine::MBNH Personal & public health
    Language: English
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    Women's Empowerment and Public Policy in the Arab Gulf States (2024)
    Springer Nature | Springer Nature Singapore
    Details
    Publication Date: 2024-03-29
    Description: This open access book explores the various dimensions of women’s empowerment in public policy in the Gulf Cooperation Council (GCC) region, with a particular focus on Qatar, comparing the country to the other Gulf states. Through its rich compilation of empirical qualitative research, the text unpacks the various ways in which women’s empowerment materializes in the GCC context, providing insights into public policy perspectives in high-income rentier states more broadly. The Arab world has long been part of the global dialogue on women’s economic and political empowerment and the GCC has, over the past decade, situated women’s empowerment amongst their respective national priorities and long-term strategies. In turn, the Gulf has seen gradual implementation of policies aimed at women, specifically, in looking to attract and retain them in the labour market, and in the public sector more broadly. The collection surveys and evaluates the progress made in recent decades, paying close attention to the cultural and policy constraints still limiting women’s empowerment in the Gulf. With a key linkage to SDG5, this book is a timely text addressing the context and drivers behind policies centering on women in the Arab region, in its analysis of the interplay of international women’s empowerment discourse and regional public policy decisions. It is relevant to researchers and policy makers focused on women and gender issues in relation to social, cultural, economic, and political empowerment in the Gulf specifically, but also in the Arab world and beyond. ; This open access book explores the various dimensions of women’s empowerment in public policy in the Gulf Cooperation Council (GCC), with a particular focus on Qatar, comparing the country to the other Gulf states. Through its rich compilation of empirical qualitative research, the text unpacks the various ways in which women’s empowerment materializes in the GCC context, providing insights into public policy perspectives in high-income rentier states more broadly. The Arab world has long been part of the global dialogue on women’s economic and political empowerment and the GCC has, over the past decade, situated women’s empowerment amongst their respective national priorities and long-term strategies. In turn, the Gulf has seen gradual implementation of policies aimed at women, specifically, in looking to attract and retain them in the labour market, and in the public sector more broadly. The collection surveys and evaluates the progress made in recent decades, paying close attention to the cultural and policy constraints still limiting women’s empowerment in the Gulf. With a key linkage to SDG5, this book is a timely text addressing the context and drivers behind policies centering on women in the Arab region, in its analysis of the interplay of international women’s empowerment discourse and regional public policy decisions. It is relevant to researchers and policy makers focused on women and gender issues in relation to social, cultural, economic, and political empowerment in the Gulf specifically, but also in the Arab world and beyond.
    Keywords: Public Policy and Women Empowerment in the Gulf ; Women and Work in Qatar ; Maqasid Approach to Women Empowerment ; Public Sector and Empowering Women in Qatar ; Public Sector and Empowering Women in the GCC ; Family and Labour Economics ; Gender, Family and Society ; Gender in Law and Policy ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBS Social groups, communities and identities::JBSF Gender studies, gender groups ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPP Public administration ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology::JHBK Sociology: family and relationships ; thema EDItEUR::L Law::LN Laws of specific jurisdictions and specific areas of law::LNH Employment and labour law: general ; thema EDItEUR::K Economics, Finance, Business and Management::KC Economics::KCF Labour / income economics
    Language: English
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    Making Universities Matter (2024)
    Springer Nature | Springer Nature Switzerland
    Details
    Publication Date: 2024-04-07
    Description: In an era of rapid change and increasing societal demands, the role of universities as knowledge producers and catalysts for change has come under scrutiny. This open access book offers a fresh perspective on the significance of universities in society, shedding light on how their knowledge can truly matter beyond academia. Drawing upon insightful inquiries from both the Swedish and international contexts, this volume delves into the multifaceted interactions between universities and various knowledge users, emphasizing the need for scholars to reflect on how their knowledge can become useful and applicable to wider society. Organized into three compelling themes, collaboration, engagement, and impact, this book explores the concept of "mattering". Together and jointly, they point at the fluid movement of scholars and scholarly knowledge across academic, political, and public spaces, and the intentional actions of scientists to leverage their expertise for real-worldimpact. Essential reading for social science and humanities scholars, university management professionals, and individuals keen on a critical understanding of the evolving role of universities, this volume offers a comprehensive examination of how universities have mattered, continue to matter, and can shape the future.
    Keywords: Knowledge and Innovation ; Knowledge transfer ; Universities in society ; Knowledge production ; Innovation and Technology Management ; University governance ; Science–policy interaction ; Role of universities in society ; Research collaboration ; Inequality in academia ; thema EDItEUR::K Economics, Finance, Business and Management::KJ Business and Management::KJD Business innovation ; thema EDItEUR::K Economics, Finance, Business and Management::KJ Business and Management::KJM Management and management techniques::KJMK Knowledge management ; thema EDItEUR::J Society and Social Sciences::JN Education ; thema EDItEUR::J Society and Social Sciences::JH Sociology and anthropology::JHB Sociology ; thema EDItEUR::J Society and Social Sciences::JN Education::JNM Higher education, tertiary education ; thema EDItEUR::K Economics, Finance, Business and Management::KC Economics ; thema EDItEUR::J Society and Social Sciences::JN Education::JNF Educational strategies and policy
    Language: English
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    Cancer Care in Pandemic Times: Building Inclusive Local Health Security in Africa and India (2024)
    Springer Nature | Palgrave Macmillan
    Details
    Publication Date: 2024-01-16
    Description: This open access edited volume focuses on the scope and benefits of strengthening local industrial-health linkages. The Covid-19 pandemic collapsed international supply chains for health. That experience brought home to African policy makers the critical nature of local manufacturing capabilities for sustaining and strengthening health care, and highlighted the pandemic benefits of India’s much stronger industrial base. At that time, a network of researchers in East Africa, India and the UK were investigating how to address the crisis of cancer care in low-resource health systems. Their project, uniquely, focused on the scope and benefits of strengthening local industrial-health linkages. The project researchers were also drawn into the pressing demands of Covid19 response. The result is this very timely book. The authors link their research on cancer to pandemic experience, and they draw sharp lessons for how countries can enhance their populations’ health security. The authors argue that improving cancer care is crucial for human wellbeing and more inclusive health care. They challenge policy makers to bring together health needs, health innovations and improved industrial capabilities to embed better cancer care and broader health system improvement in local industrial innovation and development.
    Keywords: Covid19 ; cancer ; Africa ; India ; health security ; manufacturing for health ; bic Book Industry Communication::J Society & social sciences::JP Politics & government::JPS International relations
    Language: English
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    Intercultural Competence and Pragmatics (2024)
    Springer Nature | Palgrave Macmillan
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    Publication Date: 2024-03-24
    Description: This Open Access book examines the link between intercultural competence (IC) and pragmatics by asking frontline modern foreign language teachers in higher education teaching a variety of languages (e.g., Dutch, English, French, German, Italian, Spanish, Swedish) how they conceptualise intercultural competence and which skills, competences and knowledge they consider important in their teaching contexts. The data were collected with an online survey that focused on the relationship between intercultural competence and pragmatics. While international organizations such as the United Nations Educational, Scientific and Cultural Organization (UNESCO) or the Council of Europe (CoE) agree that intercultural competence should play an important role in education, it is not always clear what IC may encompass in specific teaching contexts and subject areas. Examining how modern foreign language teachers in higher education conceptualise intercultural competence and the value they attach as well as the attention they give to various areas of pragmatics in their teaching is highly important, since those language professionals may be the final teachers learners encounter during their formal foreign language education. They are therefore in a unique position to shape modern foreign language learners’ intercultural and pragmatic awareness, competence and skills. This book will be of interest to language professionals, modern foreign language teachers and teacher trainers, as well as students and scholars of applied linguistics, pragmatics, and language education.
    Keywords: intercultural competence ; pragmatic competence ; intercultural teaching ; intercultural communicative competence ; L2 pragmatics ; teaching of L2 pragmatics ; intercultural competence in foreign language teaching ; language and culture ; intercultural skills ; intercultural communication ; communicative competence ; intercultural competence in higher education ; intercultural education ; interlanguage pragmatics ; ICC ; IC ; thema EDItEUR::C Language and Linguistics::CF Linguistics::CFG Semantics, discourse analysis, stylistics ; thema EDItEUR::G Reference, Information and Interdisciplinary subjects::GT Interdisciplinary studies::GTC Communication studies ; thema EDItEUR::J Society and Social Sciences::JB Society and culture: general::JBC Cultural and media studies::JBCT Media studies ; thema EDItEUR::C Language and Linguistics::CB Language: reference and general ; thema EDItEUR::J Society and Social Sciences::JN Education::JNM Higher education, tertiary education
    Language: English
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    Internet of Production (2024)
    Springer Nature | Springer International Publishing
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    Publication Date: 2024-04-11
    Description: This seminal compendium, available through open access, illuminates the forefront of digital collaboration in production. It introduces the visionary concept of the Internet of Production (IoP), an ambitious initiative by Germany's esteemed Cluster of Excellence at RWTH Aachen University. This handbook pioneers the integration of data, models, and knowledge across development, production, and user cycles, offering interdisciplinary insights into production technology's horizons with the overall objective to create a worldwide lab. The work is organized into seven key parts, each contributing to a comprehensive understanding of the IoP. Part I lays the foundation with interdisciplinary visions and concepts. Part II delves into IoP's infrastructure, encompassing digital shadows and actionable artificial intelligence. Part III examines materials within the digitalized production landscape. Part IV confronts the challenges and potentials of production processes under novel digitalization methods. Part V focuses on production management with data-driven decision support, while Part VI explores agile development processes. Finally, Part VII delves into the interplay between internal and external perspectives in the IoP, human-centered work design, and platform-based ecosystems. Supported by the German Research Foundation (DFG), this compendium redefines manufacturing through the transformative IoP lens. Embrace this scholarly endeavor to embrace technological advancement. This is an open access book.
    Keywords: Internet of Production ; Industrial Internet of Things ; Advanced Manufacturing ; Production ; Digital Shadow ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering ; thema EDItEUR::U Computing and Information Technology::UM Computer programming / software engineering::UMB Algorithms and data structures ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science ; thema EDItEUR::K Economics, Finance, Business and Management::KJ Business and Management::KJM Management and management techniques::KJMV Management of specific areas::KJMV5 Production and quality control management ; thema EDItEUR::K Economics, Finance, Business and Management::KJ Business and Management::KJM Management and management techniques::KJMV Management of specific areas ; thema EDItEUR::K Economics, Finance, Business and Management::KJ Business and Management::KJM Management and management techniques::KJMV Management of specific areas::KJMV8 Purchasing and supply management
    Language: English
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    Civil Society Elites (2024)
    Springer Nature | Palgrave Macmillan
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    Publication Date: 2024-01-16
    Description: This open access book introduces a groundbreaking concept - civil society elites - and serves as an essential resource for scholars, researchers and students interested in the complexities of power and influence within contemporary civil societies. Through a series of unique empirical studies, the authors offer a comprehensive examination of the individuals occupying the upper echelons of influential civil society organisations and movements. By delving into the factors that propel individuals into key positions and examining the connections between civil society leaders within and across sectors, the book offers insight into the mechanisms that shape access to powerful positions in civil societies. As a reflection of current debates on elites and populism, the book furthermore explores the expression and conceptualisation of counter-elite positions and criticism of civil society elites. With its original approach, the book serves as a catalyst for further research into inequalities, power structures and elites within civil societies.
    Keywords: Civil society elites ; Elite theory ; Civil society theory ; Elite integration ; Elite reproduction ; Elite contestation ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFF Social issues & processes ; bic Book Industry Communication::J Society & social sciences::JK Social services & welfare, criminology::JKS Social welfare & social services::JKSN Social work ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology
    Language: English
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    A Circular Built Environment in the Digital Age (2024)
    Springer Nature | Springer International Publishing
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    Publication Date: 2024-04-11
    Description: This open access book offers a comprehensive exploration of the digital innovations that have emerged in recent years for the circular built environment. Each chapter is meticulously crafted to ensure that both academic readers and industry practitioners can grasp the inner workings of each digital technology, understand its relevance to the circular built environment, examine real-life implementations, and appreciate the intriguing business models behind them. Our primary objective is to blend scholarly knowledge with practical inspiration by providing real-life case studies for each innovation. The authors, who possess extensive expertise in their respective fields, have contributed chapters dedicated to digital technologies within their areas of specialization. The book is organized into three distinct parts. The first part focuses on data-driven digital technologies and delves into how their capabilities can facilitate the transition to a circular built environment. Essential aspects such as building information modeling (BIM), digital twins, geographical information systems (GIS), scanning technologies, artificial intelligence (AI), data templates, and material passports are explored as vital tools for data collection, integration, and analysis in the context of circular construction. In the second part, various digital technologies for design and fabrication are introduced. Topics covered include computational design algorithms, additive and subtractive manufacturing, robotic manufacturing, and extended reality. These discussions shed light on how these technologies can be leveraged to enhance design and fabrication processes within the circular built environment. Finally, the last part of the book presents emerging digital concepts related to business and governance. It explores the role of deconstruction and reverse logistics, blockchain technology, digital building logbooks, and innovative business models as enablers of circularity in the built environment. The book concludes with a chapter dedicated to digital transformation and its potential to propel the built environment towards a regenerative future. In addition to the substantive content, the book features forewords and perspectives from esteemed experts, providing valuable economic and creative insights to complement its comprehensive approach.
    Keywords: Digital innovations in the construction sector ; Applications in the construction sector ; Circular economy in the built environment ; Digital construction ; Addititive manufacturing ; Robotic manufacturing and artificial intelligence ; Big data and analytics ; Blockchain ; Circular business models ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNK Building construction and materials ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TQ Environmental science, engineering and technology::TQD Environmental monitoring ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNU Sustainability ; thema EDItEUR::P Mathematics and Science::PB Mathematics::PBT Probability and statistics ; thema EDItEUR::U Computing and Information Technology::UF Business applications::UFM Mathematical and statistical software
    Language: English
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    Die politische Ökonomie der „Überflüssigen“ (2024)
    Springer Nature | Springer VS
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    Publication Date: 2024-01-16
    Description: Jakob Graf wirft in diesem Open-Access-Buch die Frage auf, wie sozialökologische Konflikte am Rande der Weltwirtschaft soziologisch verstanden werden können. Dabei zeigt er, dass gerade in durch Rohstoffausbeutung gekennzeichneten Ländern des Globalen Südens große Teile der Erwerbstätigen nicht mittels Lohnarbeit in den globalen Kapitalismus integriert werden. Aus Sicht der kapitalistischen Weltwirtschaft sind große Teile der weltweiten Armen vielmehr „überflüssig“. Der Autor zeigt, dass diese Menschen allerdings nicht einfach „arbeitslos“, sondern vielfach wirtschaftlich aktiv sind; sie tragen in entscheidendem Maße zum Überleben der Menschen in ärmeren Ländern bei. Wie aus dem Widerspruch zwischen diesen lokalen „bedarfsökonomischen“ Aktivitäten und der kapitalistischen Wirtschaft sozialökologische Konflikte entstehen, verdeutlicht Graf am Beispiel der indigenen Mapuche im Süden Chiles. Diese setzen sich gegen die Expansion der industriellen Forstwirtschaft zur Wehr, die für die Weltmärkte in riesigen Forstplantagen Zellstoff produziert. Als historisch "Enteignete" kämpfen die Mapuche für die Wiederaneignung ihres Landes und ihrer Ressourcen. Graf analysiert die Funktionsweise derartiger Konflikte, er fragt, wie sich die soziale Gruppe der „Überflüssigen“ soziologisch verstehen lässt.
    Keywords: Lateinamerika ; soziale Konflikte ; Chile ; Kapitalismus ; Kolonialismus ; Globaler Süden ; bic Book Industry Communication::K Economics, finance, business & management::KC Economics::KCP Political economy
    Language: German
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    Entstehung, Struktur und Steuerung des deutschen Schulsystems (2024)
    Springer Nature | Springer Fachmedien Wiesbaden
    Details
    Publication Date: 2024-03-14
    Description: Für jene, die (künftig) als Lehrkräfte oder in anderen Positionen im Kontext von Schule arbeiten, ist es unerlässlich, über ein orientierendes Wissen zum Schulsystem zu verfügen. In Anlehnung an die Themenstruktur der Module zum bildungswissenschaftlichen Studium bietet dieses Open-Access-Lehrbuch in komprimierter und präziser Form zentrale, wissenschaftlich fundierte Grundlagen zur Entstehung, Struktur und Steuerung des deutschen Schulsystems und seiner Qualitätsentwicklung. Eine konzentrierte Themenwahl und die grundlegende Einführung zentraler Begriffe und problemorientierter Zusammenhänge garantieren ein vertieftes Basiswissen, das sowohl im Rahmen von Lehrveranstaltungen als auch zur Prüfungsvorbereitung unentbehrlich ist. Hierzu tragen auch Reflexionsaufgaben am Ende aller Kapitel bei. Über eine grundlegende Aktualisierung der herangezogenen Forschungs- und Datenlage hinaus bietet die 4. Auflage nun einen systematischen Blick auf die (nicht) staatlichen Akteure, die aufunterschiedlichen Ebenen des Bildungssystems Einfluss nehmen. Darüber hinaus werden Querschnittsthemen (wie Inklusion und Digitalisierung) stärker akzentuiert, die das Bild von Schule prägen. ; Für jene, die (künftig) als Lehrkräfte oder in anderen Positionen im Kontext von Schule arbeiten, ist es unerlässlich, über ein orientierendes Wissen zum Schulsystem zu verfügen. In Anlehnung an die Themenstruktur der Module zum bildungswissenschaftlichen Studium bietet dieses Open-Access-Lehrbuch in komprimierter und präziser Form zentrale, wissenschaftlich fundierte Grundlagen zur Entstehung, Struktur und Steuerung des deutschen Schulsystems und seiner Qualitätsentwicklung. Eine konzentrierte Themenwahl und die grundlegende Einführung zentraler Begriffe und problemorientierter Zusammenhänge garantieren ein vertieftes Basiswissen, das sowohl im Rahmen von Lehrveranstaltungen als auch zur Prüfungsvorbereitung unentbehrlich ist. Hierzu tragen auch Reflexionsaufgaben am Ende aller Kapitel bei. Über eine grundlegende Aktualisierung der herangezogenen Forschungs- und Datenlage hinaus bietet die 4. Auflage nun einen systematischen Blick auf die (nicht) staatlichen Akteure, die aufunterschiedlichen Ebenen des Bildungssystems Einfluss nehmen. Darüber hinaus werden Querschnittsthemen (wie Inklusion und Digitalisierung) stärker akzentuiert, die das Bild von Schule prägen.
    Keywords: Bildungswesen ; Erziehungswissenschaft ; Schulentwicklung ; Schulqualität ; Schultheorie ; bic Book Industry Communication::J Society & social sciences::JN Education ; bic Book Industry Communication::J Society & social sciences::JN Education::JNL Schools
    Language: German
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    Rational Use of Intravenous Fluids in Critically Ill Patients (2024)
    Springer Nature | Springer International Publishing
    Details
    Publication Date: 2024-04-11
    Description: This open access book, published by Springer under the Open Access CC BY 4.0 Licence in collaboration with the International Fluid Academy (IFA, www.fluidacademy.org), explores rationalized intravenous fluid therapy for critically ill patients. Despite being commonly prescribed in inpatient settings, intravenous fluids are often administered without evidence-based guidelines, neglecting essential considerations such as the fact they are drugs, that need proper dosing, duration, indications, contraindications, side effects, and de-escalation. This book fills this knowledge gap. Each chapter starts with a clinical vignette and a related question, followed by a concise summary abstract, key learning points, main text, and a conclusion that addresses the clinical question and provides relevant take-home messages. Additionally, every chapter includes an IFA commentary referencing the latest literature and evidence. The book begins with an introductory chapter that provides definitions and terminology, followed by four sections. The first section covers the fundamentals of intravenous fluid therapy, including fluid compartments in sick patients, fluid bolus dynamics, heart-lung interactions, fluid challenge, fluid responsiveness, arterial blood gas analysis based on traditional and Stewart concepts, and electrolyte physiology relevant to clinical issues. The second section discusses commercially available intravenous fluids, while the third section focuses on fluid therapy in specific clinical situations. The final section introduces the concepts of fluid stewardship and appropriate fluid prescription. Aligned with the International Fluid Academy's mission to enhance education and promote research on fluid management and monitoring, ultimately improving patient survival rates, this book contributes significantly to establishing fluid stewardship at the bedside. It provides valuable support for physicians, nurses, pharmacists, and other healthcare professionals across various clinical disciplines working in emergency rooms, operating rooms, or intensive care units, aiding their everyday clinical practice.
    Keywords: Dynamics of fluid resuscitation ; Acid-base homeostasis ; Hydroxyethyl starch ; Blood and blood products in resuscitation ; Regulation of plasma electrolytes and dyselectrolytemia ; thema EDItEUR::M Medicine and Nursing::MK Medical specialties, branches of medicine::MKP Accident and emergency medicine::MKPL Intensive care medicine ; thema EDItEUR::M Medicine and Nursing::MK Medical specialties, branches of medicine::MKA Anaesthetics ; thema EDItEUR::M Medicine and Nursing::MK Medical specialties, branches of medicine::MKP Accident and emergency medicine ; thema EDItEUR::M Medicine and Nursing::MJ Clinical and internal medicine ; thema EDItEUR::M Medicine and Nursing::MN Surgery
    Language: English
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    The Palgrave Handbook of South–South Migration and Inequality (2024)
    Springer Nature | Palgrave Macmillan
    Details
    Publication Date: 2024-01-16
    Description: This open access handbook examines the phenomenon of South-South migration and its relationship to inequality in the Global South, where at least a third of all international migration takes place. Drawing on contributions from nearly 70 leading migration scholars, mainly from the Global South, the handbook challenges dominant conceptualisations of migration, offering new perspectives and insights that can inform theoretical and policy understandings and unlock migration’s development potential. The handbook is divided into four parts, each highlighting often overlooked mobility patterns within and between regions of the Global South, as well as the inequalities faced by those who move. Key cross-cutting themes include gender, race, poverty and income inequality, migration decision making, intermediaries, remittances, technology, climate change, food security and migration governance. The handbook is an indispensable resource on South-South migration and inequality for academics, researchers, postgraduates and development practitioners.
    Keywords: Global South ; colonisation ; decolonisation ; forced migration ; food insecurity ; climate change ; gender inequality ; transnational borders ; asylum ; refugees ; diaspora ; colonialism ; displacement ; discrimination ; intersectional inequalities ; Indigenous Peoples ; postcolonialism ; racism ; Sustainable Development Goals ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFF Social issues & processes::JFFN Migration, immigration & emigration ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology::JHBD Population & demography ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RG Geography::RGC Human geography ; bic Book Industry Communication::J Society & social sciences::JP Politics & government::JPA Political science & theory ; bic Book Industry Communication::J Society & social sciences
    Language: English
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    Perspectives on Socio-environmental Transformations in Ancient Europe (2024)
    Springer Nature | Springer Nature Switzerland
    Details
    Publication Date: 2024-04-04
    Description: This open access book brings together key issues from transformative processes and events across Europe (and in some cases beyond) from 15,000 to 1 BCE. This volume covers the research output produced by the Collaborative Research Centre (CRC) 1266 "Scales of Transformation" – the first interdisciplinary centre to diachronically investigate transformations in past societies with a summary of their individual aspects from the Late Palaeolithic to the Roman Period. Following the introduction, the book is divided into three main sections: In "Identification of anatomies of socio-environmental transformation", the concept of scales of transformations is first explained, and the various parameters of transformational change are identified. This is followed by "Expressions of socio-environmental transformations: from climate preconditions to decision making", in which transformation processes are illustrated with individual examples. The third major part of the book deals with"Perspectives on decision making processes in socio-environmental transformations". In conclusion, the results are framed in a broad temporal framework, and patterns of socio-environmental change are presented across common time frames from the Eastern Mediterranean to Scandinavia. This book is of interest to researchers in archaeology and palaeoecology.
    Keywords: Archaeological transformation studies ; Human-environment interaction ; Social archaeology of prehistoric societies ; Transformations in human history ; Integrative archaeology ; Modelling past transformations ; Combining quantitative and qualitative archaeological research ; Palaeoenvironmental research ; European prehistory ; Prehistoric social and political history ; thema EDItEUR::N History and Archaeology::NK Archaeology ; thema EDItEUR::N History and Archaeology::NK Archaeology
    Language: English
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    Agroforestry as Climate Change Adaptation (2024)
    Springer Nature | Palgrave Macmillan
    Details
    Publication Date: 2024-03-14
    Description: This open access book provides multidisciplinary perspectives on the potential of agroforestry to mitigate the negative impacts of climate change on cocoa production. Against the backdrop of increasingly precarious farmer livelihoods, it focuses on cocoa-agroforestry in Ghana – the second largest producer of cocoa in the world. Taking the reader on a journey across experimental plots and on-farm studies, the book delivers a holistic understanding of cocoa-agroforestry. Chapters examine historical yield and climate interactions, the effects of heat and drought on cocoa plants and the role of differing shade trees on soil fertility, yields, pests and diseases. The book discusses the socioeconomics of shade tree management, including cost-benefits, tree rights and competition for natural resources emphasizing policy implications and recommendations. Taking a multidisciplinary approach to climate-agriculture interactions, the book provides an innovative understanding of agroforestry and perennial cropping systems that goes beyond the Ghanaian cocoa belt. It is of relevance to students, researchers, farmers, practitioners and policymakers working with agroforestry and climate change adaptation. This is an open access book.
    Keywords: cocoa ; climate change ; multidisciplinary ; mitigation ; adaptation ; resilience ; climate-smart agriculture ; Ghana ; shade trees ; farming systems ; ecophysiology ; land rights ; tree use rights ; smallholder farming ; rural livelihoods ; technical efficiency ; perennial crop ; profitability ; sustainability ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RG Geography ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNF Environmental management ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RN The environment::RNU Sustainability
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    International Yearbook of Soil Law and Policy 2022 (2024)
    Springer Nature | Springer International Publishing
    Details
    Publication Date: 2024-03-14
    Description: This open access book presents an important discussion on the interface between sustainable soil management and climate mitigation and adaptation. It investigates a variety of aspects in this context, such as the political and societal consequences for countries in the Global South, an assessment of the outcomes of the UNFCCC Conference of Parties held in Glasgow, appropriate legal instruments to promote desealing, regulatory concepts for negative emissions in soil and land use, the debate in Europe on carbon uptake in soils and the climate-related policy of the Convention on Biological Diversity. Lastly, it provides information on recent court rulings on climate mitigation in Germany and Australia and their relevance for sustainable soil management. This sixth volume of the International Yearbook of Soil Law and Policy is divided into four parts, the first of which deals with various aspects of the theme “Climate Mitigation and Adaptation and Sustainable Soil Management.”The second part covers recent international developments, the third presents regional and national reports, and the fourth discusses overarching issues. Given the range of key topics covered, the book offers an indispensable tool for all academics, legislators and policymakers working in this field. The “International Yearbook of Soil Law and Policy” series discusses central questions in law and politics with regard to the protection and sustainable management of soil and land – at the international, national, and regional level.
    Keywords: Land Degradation ; Neutrality ; Sustainable Management ; Climate Adaptation ; Soil ; Governance ; Climate Mitigation ; UNFCCC ; CBD ; Sustainability ; Climate Change ; Emissions ; Climate Policy ; Climate Litigation ; bic Book Industry Communication::L Law::LB International law::LBB Public international law::LBBP International environmental law ; bic Book Industry Communication::T Technology, engineering, agriculture::TV Agriculture & farming::TVB Agricultural science ; bic Book Industry Communication::L Law::LB International law::LBB Public international law ; bic Book Industry Communication::J Society & social sciences::JP Politics & government::JPV Political control & freedoms::JPVH Human rights ; bic Book Industry Communication::R Earth sciences, geography, environment, planning::RB Earth sciences::RBP Meteorology & climatology ; bic Book Industry Communication::J Society & social sciences::JP Politics & government::JPQ Central government::JPQB Central government policies
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    Elusive Phenomena, Unwieldy Things (2024)
    Springer Nature | Springer Nature Switzerland
    Details
    Publication Date: 2024-04-04
    Description: This open access book provides a historical treatment of scientific control in experimentation in the longue durée. The introduction distinguishes four related strands in the history of experimental control: the development of practices to stabilize experimental conditions; the career of the comparative design; the unfolding of methodological discussions about control practices and designs; and the history of the term “control”. Each chapter brings these distinctions to bear on specific historical episodes. The focus is on experiments with complex, elusive phenomena such as perception and learning, irregular movements, and unobservable elements. Such experiments bring control issues to the fore because they are difficult to design and stabilize and often controversial. Together, the chapters show that the local context shapes what exactly is controlled, how control can be accomplished, and how controls are justified. They also show that control strategies and methodological ideas often remain stable for a long time and change only gradually. This book, as well as the volume on analysis and synthesis in experimentation by the same editors, contains contributions by an array of experts from multiple disciplines, making it suitable for historians and philosophers of science and students alike.
    Keywords: Control experiment ; History of experimental practice ; History of life sciences ; History of physical sciences ; History of philosophy of science ; visions on experimentation ; thema EDItEUR::P Mathematics and Science::PD Science: general issues::PDX History of science ; thema EDItEUR::Q Philosophy and Religion::QD Philosophy::QDH Philosophical traditions and schools of thought ; thema EDItEUR::P Mathematics and Science::PN Chemistry::PNF Analytical chemistry ; thema EDItEUR::P Mathematics and Science::PB Mathematics::PBX History of mathematics
    Language: English
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    Manifold Learning (2024)
    Springer Nature | Springer Nature Switzerland
    Details
    Publication Date: 2024-04-14
    Description: This Open Access book reviews recent theoretical and numerical developments in nonlinear model order reduction in continuum mechanics, being addressed to Master and PhD students, as well as to researchers, lecturers and instructors. The aim of the authors is to provide tools for a better understanding and implement reduced order models by using: physics-based models, synthetic data forecast by these models, experimental data and deep learning algorithms. The book involves a survey of key methods of model order reduction applied to model-based engineering and digital twining, by learning linear or nonlinear latent spaces. Projection-based reduced order models are the projection of mechanical equations on a latent space that have been learnt from both synthetic data and experimental data. Various descriptions and representations of structured data for model reduction are presented in the applications and survey chapters. Image-based digital twins are developed in a reduced setting. Reduced order models of as-manufactured components predict the mechanical effects of shape variations. A similar workflow is extended to multiphysics or coupled problems, with high dimensional input fields. Practical techniques are proposed for data augmentation and also for hyper-reduction, which is a key point to speed up projection-based model order reduction of finite element models. The book gives access to python libraries available on gitlab.com, which have been developed as part of the research program [FUI-25] MORDICUS funded by the French government. Similarly to deep learning for computer vision, deep learning for model order reduction circumvents the need to design parametric problems prior reducing models. Such an approach is highly relevant for image-base modelling or multiphysics modelling.
    Keywords: Computational Mechanics ; Data Augmentation ; Deep Learning ; Digital Twining ; Dimensionality Reduction ; GenericROM Library ; High-Fidelity Model ; Hyper-reduction ; Image-based Digital Twins ; Manifold Learning ; Model Order Reduction ; Mordicus ; Multiphysics Modeling ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence::UYQM Machine learning ; thema EDItEUR::U Computing and Information Technology::UF Business applications::UFM Mathematical and statistical software ; thema EDItEUR::P Mathematics and Science::PB Mathematics::PBT Probability and statistics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science::TGMB Engineering thermodynamics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering ; thema EDItEUR::P Mathematics and Science::PH Physics::PHU Mathematical physics ; thema EDItEUR::U Computing and Information Technology::UY Computer science::UYQ Artificial intelligence::UYQM Machine learning ; thema EDItEUR::U Computing and Information Technology::UF Business applications::UFM Mathematical and statistical software ; thema EDItEUR::P Mathematics and Science::PB Mathematics::PBT Probability and statistics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGM Materials science::TGMB Engineering thermodynamics ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TG Mechanical engineering and materials::TGP Production and industrial engineering ; thema EDItEUR::P Mathematics and Science::PH Physics::PHU Mathematical physics
    Language: English
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    Beyond Becquerel and Biology to Precision Radiomolecular Oncology: Festschrift in Honor of Richard P. Baum (2024)
    Springer Nature | Springer International Publishing
    Details
    Publication Date: 2024-04-01
    Description: This open access book is written by world-renowned experts on radiomolecular precision oncology to celebrate the work, life, principles and ideology of Richard P Baum. It includes commentaries, reviews and some thought provoking novel ideas on radionuclide precision oncology, covering topics such as various aspects of theranostics and molecular radiotherapy like radiolabeled peptides, radiolabeled antibodies, dosimetry, and quality control as well as the diagnosis and treatment of specific tumor types. Featuring contributions by biologists, physicists, chemists, mathematicians, geneticists, and physicians from a range of specialties, this Festschrift is highly interdisciplinary and will be a valuable resource for future precision oncologists. ;
    Keywords: Precision Oncology ; Theranostics ; Radiomolecular Precision Oncology ; Molecular Radiotherapy ; Radionuclide Precision Oncology ; Dosimetry ; Radiolabelled Peptides ; Radiolabelled Antibodies ; thema EDItEUR::M Medicine and Nursing::MK Medical specialties, branches of medicine::MKR Nuclear medicine ; thema EDItEUR::P Mathematics and Science::PH Physics::PHV Applied physics::PHVD Medical physics ; thema EDItEUR::M Medicine and Nursing::MJ Clinical and internal medicine
    Language: English
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    Understanding China’s Belt and Road Initiative (2024)
    Springer Nature | Springer Nature Singapore
    Details
    Publication Date: 2024-04-06
    Description: This open access book provokes critical thinking regarding the most ambitious Chinese project since the founding of the People’s Republic of China, The Belt and Road Initiative (BRI). The book presents extensive quality research and original insights in assessing the status of China’s outbound investment and construction projects under the BRI umbrella. Referring to case studies and projects of selected countries from Southeast Asia, Central Asia, and the Middle East, the author sheds new light on the issues and problems associated with the BRI's implementation and discusses both the readjustments and prospects for the BRI. Finally, this book demarcates the limits and potential of the world’s second largest economy in pushing for the BRI, which is challenged by enormous domestic tensions and external pressures. It also identifies and analyzes potential new collaboration areas between the Belt and Road countries and China under the BRI framework in the context of the post-COVID-19 era. It provides an outstanding reference for academics, students, policymakers, and the business community working in areas of international affairs and Asian economics and development, particularly those interested in Sino-relations and Chinese power dynamics in the global world order.
    Keywords: Contemporary Chinese Politics ; Asian Economics ; Connectivity and Infrastructure Development ; One Belt One Road ; Southeast Asia ; Diplomacy ; East Asia ; International Relations ; thema EDItEUR::J Society and Social Sciences::JP Politics and government ; thema EDItEUR::N History and Archaeology::NH History::NHF Asian history ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPS International relations ; thema EDItEUR::K Economics, Finance, Business and Management::KC Economics ; thema EDItEUR::J Society and Social Sciences::JP Politics and government::JPS International relations::JPSD Diplomacy ; thema EDItEUR::N History and Archaeology::NH History
    Language: English
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    Conservation in Chilean Patagonia (2024)
    Springer Nature | Springer International Publishing
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    Publication Date: 2024-04-05
    Description: Chilean Patagonia, located at the southwestern tip of South America, is one of the last regions on earth where highly intact environments predominate. With a coastline that extends along some 100,000 km of fjords, channels, and islands, it has one of the world´s most extensive marine-terrestrial interfaces. Local place-based and Indigenous cultures and management practices are a vital presence across the region, while the long and rich history of conservation efforts have resulted in officially protected areas covering over 50% of the land and 41% of the coastal-marine area. However, Chilean Patagonia is increasingly facing anthropogenic pressures associated with increased infrastructure and access, salmon aquaculture, extractive industries, and the spread of invasive exotic species. Despite widespread recognition that Chilean Patagonia represents a unique global reservoir of socio-natural heritage, to date there has been no region-wide assessment of the scientific evidence of the conservation status of its ecosystems or the priorities for their effective conservation. Conservation in Chilean Patagonia: Assessing the state of knowledge, opportunities, and challenges is the first book to gather and synthesize the available scientific and socio-environmental information related to Patagonian conservation. It presents the collaborative work of 68 researchers and local experts, representing a range of specialties and perspectives, including: biology, ecology, socio-ecology, fisheries, aquaculture, anthropology, economics, geography, tourism, cryosphere, oceanography, climate and global change. The book’s 18 chapters focus on the status of key ecosystems and conservation tools, and provide recommendations toward the construction of a renewed, inclusive, and integrated conservation agenda for the Chilean Patagonian region. It provides an essential primer for anyone interested in the future of this ecologically vital region, as well as lessons on interdisciplinary collaboration and integrated analysis of conservation issues useful for conservation practitioners and scholars. This is an open access book. This book is a translation of an original Spanish edition. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation.
    Keywords: Ecology ; Limnology ; Oceanography ; Biodiversity ; Marine-terrestrial Interface ; thema EDItEUR::P Mathematics and Science::PS Biology, life sciences::PSA Life sciences: general issues::PSAF Ecological science, the Biosphere ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNK Conservation of the environment ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RB Earth sciences::RBK Hydrology and the hydrosphere::RBKC Oceanography (seas and oceans) ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RG Geography::RGM Biogeography ; thema EDItEUR::R Earth Sciences, Geography, Environment, Planning::RN The environment::RNC Applied ecology::RNCB Biodiversity
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    Neuroaesthetics (2024)
    Springer Nature | Palgrave Macmillan
    Details
    Publication Date: 2024-01-16
    Description: ​This open access neuroaesthetics textbook, the first in the world, is designed for teaching a semester module (14 meetings) to undergraduate/masters students from both the sciences and the humanities. Written in a style that appeals to humanities students without prior science training, and to science students without prior humanities training, the textbook contains 6 Units, material for an introductory class, and summative comments to be discussed in a closing meeting. Each Unit comprises an overview designed as student home reading, a lecture, and a lab. The labs contain detailed step-by-step instructions for running a basic experiment and analysing the collected data, that can be easily implemented in humanities and science departments alike. The textbook introduces students to philosophical considerations of neuroaesthetics topics in context of the history of empirical aesthetics, showcases experimental approaches to the empirical study of dance, the visual arts, and music, and supports hands-on training in experimental research methods.
    Keywords: neuroaesthetics ; perception ; art ; quantitative methods ; qualitative methods ; psychology of creativity ; artificial intelligence ; bic Book Industry Communication::J Society & social sciences::JM Psychology::JMR Cognition & cognitive psychology ; bic Book Industry Communication::J Society & social sciences::JM Psychology ; bic Book Industry Communication::H Humanities::HP Philosophy::HPN Philosophy: aesthetics ; bic Book Industry Communication::A The arts::AB The arts: general issues
    Language: English
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    Measuring Gender Equality (2024)
    Springer Nature | Springer International Publishing
    Details
    Publication Date: 2024-01-16
    Description: In this open access book, the editors explicitly address the issue of measuring gender equality. The book introduces readers to basic concepts of gender equality, equity and equal opportunities, then discusses measuring these phenomena, the methods of constructing indicators, and reviews the main indicators that have been proposed at the international level to measure gender equality. It then sets the theoretical discussions against the findings from a Jean Monnet project financed by the European Union to highlight the importance of a regional analysis of gender equality in four main study areas: Italy, Spain, France and Germany. The results make it clear that it is necessary to move from the purely national perspective hitherto used in gender equality analyses to a regional one because differences can be highly pronounced even within the same country. This is a self-contained volume requiring limited statistical expertise for the reader and is aimed at social researchers and policymakers who wish to address gender equality from a quantitative perspective.
    Keywords: Gender Equality ; Gender Gap ; Indicators ; Measurement ; Policy Making ; European Union ; Complexity ; Regional Studies ; Gender Responsive ; Fiscal Policies ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFS Social groups::JFSJ Gender studies, gender groups ; bic Book Industry Communication::K Economics, finance, business & management::KJ Business & management::KJM Management & management techniques::KJMV Management of specific areas::KJMV2 Personnel & human resources management ; bic Book Industry Communication::J Society & social sciences::JH Sociology & anthropology::JHB Sociology::JHBC Social research & statistics ; bic Book Industry Communication::J Society & social sciences::JF Society & culture: general::JFF Social issues & processes
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    Automatisierter ÖPNV (2024)
    Springer Nature | Springer Vieweg
    Details
    Publication Date: 2024-04-14
    Description: Dieses Open-Access-Handbuch versteht sich als praktisches Hilfsmittel für den gezielten Einsatz eines automatisierten ÖPNV auf dem Weg zur Mobilitätswende. Es richtet sich in erster Linie an Entscheidungsträger, Verwaltungen kleinerer und größerer Kommunen sowie an Verkehrsbetriebe. Das Handbuch vermittelt der Leserin und dem Leser einen umfassenden Überblick über verschiedene Entwicklungslinien des automatisierten Fahrens sowie über die damit verbundenen Chancen und Risiken für Mobilität und Gesellschaft. Die Autorinnen und Autoren verdeutlichen sehr anschaulich, dass die Chancen des automatisierten Fahrens vor allem in der Ergänzung oder Erweiterung des ÖPNV liegen. Davon ausgehend adressiert das Buch sehr praxisnah und umsetzungsorientiert alle wesentlichen Fragestellungen, die vor dem Start eines Pilotprojekts zur Einführung eines automatisierten ÖPNV bedacht werden sollten. Der Fokus liegt auf den oft unberücksichtigten ländlichen Räumen bzw. jenen Räumen größerer Städte und Regionen, die heute von den Verkehrsbetrieben und -verbünden nicht oder nur sehr unzureichend versorgt werden. Den Herausgebern und der Herausgeberin ist das Anliegen, die Mobilitätswende so gut und rasch als möglich zu schaffen, sowie das Wissen um die herausragende Rolle des ÖPNV als kollektives Verkehrsmittel gemein. Die Autorinnen und Autoren stammen aus der Wissenschaft und aus der täglichen Planungs- und Beratungspraxis. Es ist ihnen in hervorragender Weise gelungen, eine sowohl systemische wie auch sehr lösungsorientierte Sicht auf die oft komplexe Aufgabe der Mobilitätswende zu eröffnen und die Rolle zu beschreiben, die ein automatisierter ÖPNV bei der Mobilitätswende spielen könnte.
    Keywords: Automatisiertes Fahren ; ÖPNV ; Mobilitätswende ; ländlicher Raum ; Nachhaltigkeit ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TR Transport technology and trades::TRC Automotive technology and trades ; thema EDItEUR::T Technology, Engineering, Agriculture, Industrial processes::TN Civil engineering, surveying and building::TNH Highway and traffic engineering
    Language: German
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    Grundsätze ordnungsmäßiger Aktivierung in der Handelsbilanz und in der Steuerbilanz (2024)
    Springer Nature | Springer Fachmedien Wiesbaden
    Details
    Publication Date: 2024-03-14
    Description: Das vorliegende Open-Access-Buch setzt sich mit dem bilanzrechtlichen Vermögensbegriff auseinander. Es zielt darauf ab, einen bilanztheoretisch fundierten und einheitlichen Beurteilungsmaßstab bei der Identifikation und der subjektiven Zurechnung von bilanziellem Vermögen zu entwickeln, um einen übergreifenden Problemzugriff zu ermöglichen. Daher werden im Sinne einer formallogischen Deduktion allgemeine Grundsätze des Vermögensgegenstandsbegriffs sowie dessen Zurechnung zum Bilanzierenden entwickelt und diese am Beispiel einiger bislang nicht befriedigend gelöster sowie aktueller Problemfelder konkretisiert. Das Spannungsfeld zwischen wirtschaftlicher Betrachtungsweise und Objektivierung tritt dabei bei einer Vielzahl von Sachverhalten besonders deutlich zutage, was sich nicht zuletzt im konfligierenden Verhältnis vollständiger und hinreichend objektivierter Bilanzierung niederschlägt. Es wird gezeigt, dass aus normativer Sicht auch aktuelle Phänomene wie etwa die Frage der Vermögenszurechnung bei Cum-Ex-Gestaltungen aus dem System der handelsrechtlichen Grundsätze ordnungsmäßiger Bilanzierung heraus ableitbar sind.
    Keywords: wirtschaftliche Betrachtungsweise ; Bilanzrecht ; Bilanzierung ; Vermögenszurechnung ; wirtschaftliches Eigentum ; Objektivierungsprinzip ; Vermögensgegenstand ; Wirtschaftsgut ; GoB ; Bilanztheorie ; Cum-Ex-Geschäfte ; bic Book Industry Communication::K Economics, finance, business & management::KF Finance & accounting::KFC Accounting ; bic Book Industry Communication::K Economics, finance, business & management::KF Finance & accounting::KFC Accounting::KFCF Financial accounting
    Language: German
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