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  • 1
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    The SPICE Project: Calibrated production rates of cosmogenic 3He and 21Ne in olivine and pyroxene from the 72 ka SP basalt flow, Arizona, USA (2024)
    In:  Quaternary Geochronology
    Details
    Publication Date: 2024-07-09
    Description: The formally named SP lava flow is a quartz-, olivine- and pyroxene-bearing basalt flow that is preserved in the desert climate of northern Arizona, USA. The flow has an 40Ar/39Ar age of 72 ± 4 ka (2σ) and has undergone negligible erosion and/or burial, making its surface an ideal site for direct calibration of cosmogenic nuclide production rates. Production rates for cosmogenic 3He (3Hec) and 21Ne (21Nec) have been determined from SP flow olivine and pyroxene in this study. The error-weighted mean, sea-level, high latitude (SLHL) total reference production rates of 3He in olivine and pyroxene have identical values of 135 ± 8 at/g/yr (2; standard error) using time-independent Lal (1991)/Stone (2000) (St) scaling factors. These production rates decrease to identical values of 130 ± 8 at/g/yr (2; standard error) when 3He measurements are standardized to the CRONUS-P pyroxene standard. The St-scaled, error-weighted mean, total reference production rates of 21Ne in olivine and pyroxene are 48.4 ± 2.9 at/g/yr and 26.5 ± 1.7 at/g/yr (2; standard error), respectively, increasing to 49.3 ± 3.0 at/g/yr and 27.0 ± 1.7 at/g/yr (2; standard error), respectively, when standardized to the CREU-1 quartz standard. 3He and 21Ne production rates (St) overlap within 2σ uncertainty with other St-scaled production rates in the literature. SLHL 3He and 21Ne production rates in SP flow olivine and pyroxene are nominally lower if time-dependent Lm and Sa scaling factors are used. Olivine and pyroxene both have identical, error-weighted mean SLHL production rates of 127 ± 8 at/g/yr (2; standard error) using Lm scaling factors and CRONUS-P standardized 3He measurements. These production rates decrease to identical values of 110 ± 7 at/g/yr (2; standard error) for olivine and pyroxene when using Sa scaling factors. The Lm-scaled, error-weighted mean, total reference production rates of 21Ne in olivine and pyroxene are 48.1 ± 2.8 at/g/yr and 26.4 ± 1.7 at/g/yr (2; standard error), respectively, when standardized to the CREU-1 quartz standard. The error weighted mean, local 21Ne/3He production rate ratio in olivine is 0.358 ± 0.009 (2; standard error), which increases to 0.378 ± 0.012 when using CREU-1 standardized 21Ne production rates and CRONUS-P standardized 3He production rates. The error weighted mean, local 21Ne/3He production rate ratio in pyroxene is 0.197 ± 0.006, or 0.208 ± 0.008 when 21Ne and 3He are standardized to CREU-1 and CRONUS-P, respectively. The updated, CREU-1 standardized 21Nec rate (St) in SPICE quartz is 16.5 ± 1.1 at/g/yr. Production of 21Ne in coexisting SPICE olivine (ol), pyroxene (px), and quartz (qz) (standardized to CREU-1; Fenton et al., 2019; this study) yields error-weighted mean, local production rate ratios of 3.00 ± 0.13 (2) and 1.64 ± 0.08 (2) for 21Neol/21Neqz and 21Nepx/21Neqz, respectively. This study suggests that production rates of 3He and 21Ne in SPICE olivine and pyroxene agree well with St- and Lm-scaled global mean production rates in the literature. It also indicates that CRONUS-P and CREU-1 standardizations yield production rates in even stronger agreement with these global mean rates.
    Language: English
    Type: info:eu-repo/semantics/article
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  • 2
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    Die Grauwacken der Lausitz und ihre cadomische Prägung (1994)
    In:  Beiträge zur Geologie von Sachsen : Teil 2 | Abhandlungen des Staatlichen Museums für Mineralogie und Geologie zu Dresden
    Details
    Publication Date: 2024-07-09
    Keywords: 550 - Earth sciences
    Language: German
    Type: info:eu-repo/semantics/bookPart
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  • 3
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    Beyond the Visible – Imaging Spectroscopy for Soil Applications. Massive Open Online Course (2024)
    GFZ Data Services
    In:  HYPERedu, EnMAP education initiative
    Details
    Publication Date: 2024-07-09
    Language: English
    Type: info:eu-repo/semantics/report
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  • 4
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    Der Kapuzinersandstein (2022)
    Details
    Publication Date: 2024-07-09
    Description: Der Kapuzinersandstein ist ein gelblich brauner bis tief dunkelrotbrauner Sandstein, der in einem eng begrenzten Gebiet am westlichen Rheingrabenrand bei Grünstadt/ Pfalz vorkommt. Es handelt sich um einen verfestigten Meeressand aus der Alzey-Formation des Oligozäns. Das Vorkommen beschränkt sich auf wenige Abbaustellen, deren Gewinnungstätigkeit seit etwa hundert Jahren erloschen ist. Die Körnungslinie der Sandsteine und die durch Eisen(hydr-)oxide verursachte Kornbindung ist erheblichen Schwankungen unterworfen. Hauptbestandteile sind Quarz und Gesteinsbruchstücke. Siliziumoxid und Eisenoxide machen mehr als 95 % der chemischen Zusammensetzung aus. Zahlreiche Profan- und Sakralbauten sowie die Burgruine Battenberg wurden unter teilweiser oder ausschließlicher Verwendung von Kapuzinersandstein errichtet.
    Description: Abstract: The yellowish-brown to dark red-brown coloured Kapuziner sandstone occurs within a small confined area at the western border of the Upper Rhine Graben near Grünstadt/Palatinate. It is considered as a coastal marine formation of Tertiary age (Alzey Formation, Oligocene). The extraction as a building stone ceased almost a hundred years ago and only a few relics of quarries are left today. The grain size of the sandstone varies on a large scale as well as the mechanical stability. Main components are quartz and rock fragments. Silicon oxide and iron oxides contribute more than 95 % to the chemical composition of the sedimentary rock. Multiple secular and sacred buildings as well as the Battenberg Castle have been erected partially or completely using Kapuziner sandstone .
    Description: research
    Keywords: ddc:553.53 ; Sandstein ; Pfalz ; Oberrheingraben ; Petrographie ; Geochemie ; Architektur ; Werkstein
    Language: German
    Type: doc-type:article , publishedVersion
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    CITATION GEO-LEO
  • 5
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    Platypontonia ngae sp. nov., a new symbiotic shrimp (Decapoda: Palaemonidae) living inside a boring gastrochaenid bivalve mollusk from the Philippines (2024)
    In:  Zootaxa vol. 5476 no. 1, pp. 89-98
    Details
    Publication Date: 2024-07-09
    Description: A new symbiotic palaemonid shrimp Platypontonia ngaesp. nov., is described based on a male-female pair found inside the mantle cavity of a gastrochaenid bivalve mollusk collected on a coral slope on the island Panglao, Philippines. The new species constitutes the third member of the genus Platypontonia Bruce, 1968. The new species is described, figured and compared with its congeners.
    Keywords: Malacostraca ; Caridea ; symbiosis ; Mollusca ; Gastrochaenidae ; Philippines
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 6
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    First occurrence of the mite Litarachna duboscqi Walter, 1925 (Acariformes: Pontarachnidae) in the central Mediterranean Sea (2024)
    In:  Ecologica Montenegrina vol. 74, pp. 21-26
    Details
    Publication Date: 2024-07-09
    Description: The present paper reports the water mite identified as Litarachna duboscqi collected in March 2024 from nautical ropes in the harbour of Trapani (Sicily). It is the first record for southern Italy and the central Mediterranean Sea.
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/other
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  • 7
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    Critical thermal maxima and oxygen uptake in Elysia viridis, a sea slug that steals chloroplasts to photosynthesize (2024)
    In:  Journal of Experimental Biology vol. 227 no. 10
    Details
    Publication Date: 2024-07-09
    Description: Photosynthetic animals produce oxygen, providing an ideal lens for studying how oxygen dynamics influence thermal sensitivity. The algivorous sea slug Elysia viridis can steal and retain chloroplasts from the marine alga Bryopsis sp. for months when starved, but chloroplast retention is mere weeks when they are fed another green alga, Chaetomorpha sp. To examine plasticity in thermal tolerance and changes in net oxygen exchange when fed and starving, slugs fed each alga were acclimated to 17°C (the current maximum temperature to which they are exposed in nature) and 22°C (the increase predicted for 2100) and measured at different points during starvation. We also examined increased illumination to evaluate a potential tradeoff between increased oxygen production but faster chloroplast degradation. Following acclimation, we subjected slugs to acute thermal stress to determine their thermal tolerance. We also measured net oxygen exchange before and after acute thermal stress. Thermal tolerance improved in slugs acclimated to 22°C, indicating they can acclimate to temperatures higher than they naturally experience. All slugs exhibited net oxygen uptake, and rates were highest in recently fed slugs before exposure to acute thermal stress. Oxygen uptake was suppressed following acute thermal stress. Under brighter light, slugs exhibited improved thermal tolerance, possibly because photosynthetic oxygen production alleviated oxygen limitation. Accordingly, this advantage disappeared later in starvation when photosynthesis ceased. Thus, E. viridis can cope with heatwaves by suppressing metabolism and plastically adjusting heat tolerance; however, starvation influences a slug's thermal tolerance and oxygen uptake such that continuous access to algal food for its potential nutritive and oxygenic benefits is critical when facing thermal stress.
    Keywords: CTmax ; Kleptoplasty ; Metabolism ; Sacoglossa ; Starvation
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 8
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    Global species hotspots and COI barcoding cold spots of marine Gastropoda (2024)
    In:  Biodiversity and Conservation vol. 2024
    Details
    Publication Date: 2024-07-09
    Description: With the on-going efforts in digitising museum collections, increased participation of citizen scientists, and greater accessibility to research data, accurately determining global patterns of diversity has become more achievable. Here, we used occurrence records from the Global Biodiversity Information Facility, with annotation of authoritative taxonomy, to evaluate the taxonomic richness of marine gastropods and to identify global species hotspots for this group. We also reviewed the availability of genetic resources within hotspots to detect potentially important regions where reference sequences for identifying these organisms are wanting. We find 33,268 unique and valid species under 3291 genera belonging to 380 gastropod families that have been recorded from 1662 to 2023. Globally, only 12.1% of reported species are linked to a COI barcode, whilst 27.1% of the families are represented with complete mitogenomes. Georeferenced records show the wide albeit disparate distribution of observations and species counts. The compiled dataset, published by organisations that are restricted to 55 countries, reveal a seeming lack of local submissions, but nonetheless demonstrates the growing contribution of citizen science platforms. We present 28 marine provinces across the globe as putative gastropod species hotspots and call for further work and stronger involvement, particularly within COI barcoding cold spots, to address the observed genetic reference inequity. Lastly, we highlight the important and relevant role of open and inclusive science to biodiversity monitoring and research.
    Keywords: Marine gastropods ; Species occurrence ; Global diversity ; COI ; Open science ; Citizen science
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 9
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    Revision of Troporhogas Cameron (Hymenoptera, Braconidae, Rogadinae) with six new species from India and Thailand (2024)
    In:  ZooKeys vol. 1206, pp. 99-136
    Details
    Publication Date: 2024-07-09
    Description: The genus Troporhogas Cameron, 1905 from the Indo-Malayan region is reviewed. Six new species, Troporhogas alboniger Quicke, Loncle & Butcher, sp. nov., T. benjamini Quicke, Loncle & Butcher, sp. nov., T. hugoolseni Quicke, Loncle & Butcher, sp. nov., T. rafaelnadali Quicke, Loncle & Butcher, sp. nov., and T. rogerfedereri Quicke, Loncle & Butcher, sp. nov. from Thailand, and T. anamikae Ranjith, sp. nov. from India are described and illustrated photographically, bringing the total number of species of the genus known from the Indo-Malayan Region to 19. Troporhogas is recorded for the first time from India. A key is included to differentiate Troporhogas species. A four-gene ML tree based on COI, Cytb, 16S and 28S is reconstructed, representing the six new species. Troporhogas contrastus Long, 2014, originally described from Vietnam, is recorded from Thailand for the first time. The holotypes of the type species, Troporhogas tricolor Cameron, 1905 and that of its junior synonym Iporhogas are illustrated, and photographs are presented of all the species known only from China and Sri Lanka. Sexual colour dimorphism of males of several species is described for the first time. Drawings summarising the different patterns of black marks on the metasoma that aid species recognition are presented.
    Keywords: Checklist ; Iporhogas ; ML phylogeny ; new species ; Rogadinae ; Southeast ; Asia ; Troporhogas
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
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  • 10
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    Sea level change along the Italian coast during the Holocene and projections for the future (2012)
    Elsevier Science Limited
    Details
    Publication Date: 2024-07-09
    Description: Published and new sea level data are used to provide projections of sea level change in Italy for the year 2100 by adding new isostatic and tectonic component to the IPCC and Rahmstorf projections. Comparison of the observations from more than 130 sites (with different geomorphological and archaeological sea level markers) with the predicted sea level curves provides estimates of the vertical tectonic contribution to the relative sea level change. The results are based on the most recent ANU model for the ice sheets of both hemispheres, including an alpine deglaciation model. On the basis of the eustatic, tectonic and isostatic components to the sea level change, projections are provided for marine inundation scenarios for the Italian coastal plains for the year 2100, that today are at elevations close to current sea level.
    Description: Published
    Description: 250-257
    Description: JCR Journal
    Description: restricted
    Keywords: Sea level change ; Italian coasts ; 04. Solid Earth::04.04. Geology::04.04.99. General or miscellaneous
    Repository Name: Istituto Nazionale di Geofisica e Vulcanologia (INGV)
    Type: article
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