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  • 1
    Online Resource
    Online Resource
    Global Change in Atlantic Coastal Patagonian Ecosystems : A Journey Through Time (2022)
    Cham :Springer International Publishing :
    Details
    Keywords: Bioclimatology. ; Oceanography. ; Biodiversity. ; Geography. ; Urban ecology (Biology). ; Climate Change Ecology. ; Ocean Sciences. ; Biodiversity. ; Regional Geography. ; Urban Ecology.
    Description / Table of Contents: Part I - The abiotic environment -- Chapter 1 - Climate variability and change in Patagonia region -- Chapter 2 - Patagonian sea: the physical environment -- Chapter 3 - Geological changes in coastal areas of Patagonia -- Part II - The biota in Patagonian coastal waters -- Chapter 4 - Life in the Patagonian seas through geological time -- Chapter 5 - Towards an understanding of the functioning and structure of plankton from Patagonia under a global change scenario: Lessons from univariable to mutivariable approaches -- Chapter 6 - Marine macroalgae in a changing world: what do we know and what do we still need to know -- Chapter 7 - Impact of global change on invertebrates -- Chapter 8 - Fishes changes in marine ichthyofaunas off Patagonia: species composition, biogeographic and functional patterns -- Chapter 9 - Long-term population trends of Patagonian marine mammals and their ecosystem interactions -- Chapter 10 - Long-term ecology studies in Patagonian seabirds: the case of the Imperial Cormorant, the Magellanic Penguin and other key species -- Chapter 11 - Ecological Interactions -- Part III - Human beings in Patagonian coasts -- Chapter 12 - The evolution in the utilization of sea resources by hunter-gatherers of Central Patagonian coast during the Holocene -- Chapter 13 - Fisheries and aquaculture in Patagonia: status trends and future perspectives -- Chapter 14 - The relationship of Patagonian societies with the sea, influences in their development and contributions to their wellbeing -- Chapter 15 - Futures of Patagonia: urban and tourist prospective in the next Anthropocene -- Chapter 16 - Conservation of coastal environments.
    Abstract: This book provides an integrated view of Atlantic coastal Patagonian ecosystems, including the physical environment, biodiversity and the main ecological processes, together with their derived ecosystem services and anthropogenic impacts. It focuses on the key components of the aquatic ecosystem, covering the lower levels (plankton) to the top predators like large mammals and birds, before turning to human beings as consumers and shapers of coastal marine resources. The book then presents an overview of how organisms that constitute the aquatic food webs have changed through time and how they likely will soon change due to global change processes and anthropogenic pressures. In this regard it offers a wealth of information such as long-term patterns in physical / atmospheric processes, biodiversity and the distribution of marine organisms, as well as the results of experimental studies designed to understand their responses under future scenarios shaped by both climate change and anthropogenic pressures. The book also covers various aspects of the past, present and potential future relationship of human beings with Patagonian coastal environments, including the utilization of sea products, tourism, and growth of cities.
    Type of Medium: Online Resource
    Pages: XXX, 463 p. 103 illus., 88 illus. in color. , online resource.
    Edition: 1st ed. 2022.
    ISBN: 9783030866761
    Series Statement: Natural and Social Sciences of Patagonia,
    URL: https://doi.org/10.1007/978-3-030-86676-1
    DOI: 10.1007/978-3-030-86676-1
    DDC: 577.22
    Language: English
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    E-BOOKS (AWI ONLY)
  • 2
    Online Resource
    Online Resource
    Anthropogenic Pollution of Aquatic Ecosystems (2021)
    Cham :Springer International Publishing :
    Details
    Keywords: Pollution. ; Biotic communities. ; Freshwater ecology. ; Marine ecology. ; Environment. ; Biology. ; Pollution. ; Ecosystems. ; Freshwater and Marine Ecology. ; Environmental Sciences. ; Biological Sciences.
    Description / Table of Contents: 1. Introduction -- 2. Pollution affecting cyanobacteria in aquatic habitats -- 3. Effects of pollution on fish -- 4. Effects of pollution in aquatic food chains -- 5. Pollution in the Arctic Ocean -- 6. Contamination of coral reefs in the Mexican Caribbean.
    Abstract: This book provides examples of pollutants, such as accidental oil spills and non-degradable plastic debris, which affect marine organisms of all taxa. Terrestrial runoff washes large amounts of dissolved organic materials from agriculture and industry, toxic heavy metals, pharmaceuticals, and persistent organic pollutants which end up into rivers, coastal habitats, and open waters. While this book is not intended to encyclopaedically list all kinds of pollution, it rather exemplifies the problems by concentrating on a number of serious and prominent recent developments. The chapters in this book also discuss measures to decrease and remove aquatic pollution to mitigate the stress on aquatic organisms. Aquatic ecosystems provide a wide range of ecological and economical services. In addition to providing a large share of the staple diet for a fast growing human population, oceans absorb most of the anthropogenically emitted carbon dioxide and mitigate climate change. As well as rising temperatures and ocean acidification, pollution poses increasing problems for aquatic ecosystems and organisms reducing its functioning and services which are exposed to a plethora of stress factors.
    Type of Medium: Online Resource
    Pages: XIII, 426 p. 71 illus., 58 illus. in color. , online resource.
    Edition: 1st ed. 2021.
    ISBN: 9783030756024
    URL: https://doi.org/10.1007/978-3-030-75602-4
    DOI: 10.1007/978-3-030-75602-4
    DDC: 363.73
    Language: English
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  • 3
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    Anthropogenic pollution of aquatic ecosystems (2021)
    Cham : Springer
    Details
    Call number: 9783030756024 (e-book)
    Description / Table of Contents: This book provides examples of pollutants, such as accidental oil spills and non-degradable plastic debris, which affect marine organisms of all taxa. Terrestrial runoff washes large amounts of dissolved organic materials from agriculture and industry, toxic heavy metals, pharmaceuticals, and persistent organic pollutants which end up into rivers, coastal habitats, and open waters. While this book is not intended to encyclopaedically list all kinds of pollution, it rather exemplifies the problems by concentrating on a number of serious and prominent recent developments. The chapters in this book also discuss measures to decrease and remove aquatic pollution to mitigate the stress on aquatic organisms. Aquatic ecosystems provide a wide range of ecological and economical services. In addition to providing a large share of the staple diet for a fast growing human population, oceans absorb most of the anthropogenically emitted carbon dioxide and mitigate climate change. As well as rising temperatures and ocean acidification, pollution poses increasing problems for aquatic ecosystems and organisms reducing its functioning and services which are exposed to a plethora of stress factors.
    Type of Medium: 12
    Pages: 1 Online-Ressource (xiii, 426 Seiten) , Illustrationen, Diagramme, Karten
    ISBN: 9783030756024 , 978-3-030-75602-4
    URL: Ebook (access only within the AWI network)
    DOI: 10.1007/978-3-030-75602-4
    Language: English
    Note: Contents 1 Introduction / Donat-P. Häder, E. Walter Helbling, and Virginia E. Villafañe 2 Pollution Affecting Cyanobacteria in Aquatic Habitats / Abha Pandey, Sonal Mishra, Neha Kumari, Vidya Singh, and Rajeshwar P. Sinha 3 Effects of Pollution on Fish / Donat-P. Häder 4 Effects of Pollution in Aquatic Food Chains / Raúl González, Cristian Durante, Marina Arcagni, Romina Juncos, Juan Seco Pon, Enrique Crespo, and Maite Narvarte 5 Pollution in the Arctic Ocean / Sten-Åke Wängberg and Göran Björk 6 Contamination of Coral Reefs in the Mexican Caribbean / Anastazia T. Banaszak 7 Input of Terrestrial Material into Coastal Patagonian Waters and Its Effects on Phytoplankton Communities from the Chubut River Estuary (Argentina) / Juan I. Vizzo, Marco J. Cabrerizo, Virginia E. Villafañe, and E. Walter Helbling 8 Marine Eutrophication: Overview from Now to the Future / Paulo Antunes Horta, Leonardo Rubi Rörig, Giulia Burle Costa, José Bonomi Baruffi, Eduardo Bastos, Lyllyan Santos Rocha, Giovanna Destri, and Alessandra Larissa Fonseca 9 Anthropogenic Pollution of Coastal Ecosystems in Brazil / Sebastian M. Strauch and Gilmar S. Erzinger 10 Hydrochemical Insight and Groundwater Supply: A Case Study of Patagonia’s Chubut River / Américo I. Torres, Luis F. H. Niencheski, Verena A. Campodonico, Andrea I. Pasquini, Mauricio Faleschini, and Pedro J. Depetris 11 Pharmaceutical Pollutants in Aquatic Ecosystems / Gilmar S. Erzinger, Sebastian M. Strauch, Monique Fröhlich, Carla Keite Machado, and Lineu del Ciampo 12 Detergents Pollution in Freshwater Ecosystems / Azizullah Azizullah, Sarzamin Khan, Sabeela Rehman, Nadia Taimur, and Donat-P. Häder 13 Heavy Metals Pollution in Surface Waters of Pakistan / Azizullah Azizullah, Nadia Taimur, Sarzamin Khan, and Donat-P. Häder 14 Arsenic Pollution / Donat-P. Häder 15 Petroleum Hydrocarbons in Atlantic Coastal Patagonia / Marina L. Nievas El Makte, Rosana Polifroni, Marcela A. Sepúlveda, and Ana Fazio 16 Dumping of Toxic Waste into the Oceans / Donat-P. Häder 17 Microplastics as Pollutants in the Marine Environment / Anthony Andrady and Liping Zhu 18 Effects of Ocean Acidification on Marine Primary Producers and Related Ecological Processes Under Multiple Stressors / Peng Jin and Kunshan Gao
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  • 4
    Electronic Resource
    Electronic Resource
    Variability in nutrient concentrations around Elephant Island, Antarctica, during 1991-1993 (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Polar research 14 (1995), S. 0 
    Details
    ISSN: 1751-8369
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geography , Geosciences
    Notes: The nutrient status of the various water mass structures within a large sampling grid around Elephant Island are reported and the nutrient concentrations relative to jata from the physical and biological components of the Antarctic Marine Living Resources Programme are discussed. Concentrations of silicic acid, nitrate and phosphate (Si/N/P) were measured in the upper water column during January-March of three successive years. Samples were taken from eleven depths at 17 stations in 1991, and at four depths at 144 stations in 1992 and 182 stations in 1993. There was considerable variability in the concentrations of all three nutrients within the study area, but silicic acid showed the greatest variance among the water masses present in the sampling grid. The ratios (Si/N/P) of the nutrient deficits (difference in winter and summer values) in the upper 100 m differed considerably in Drake Passage waters as compared to Bransfield Strait waters, with both nitrate and silicic acid showing the greatest variance. Nutrient deficits did not increase from January to February, indicating that rates of replenishment of nutrients to the euphotic zone by physical processes and/or biological regeneration were approximately equal to the rate of uptake and assimilation by phytoplankton during that time period. The seasonal deficits, however, were substantial. Estimates of daily rates of primary production based on these nutrient deficits were comparable to the rates as measured by radiocarbon for Drake Passage waters, but much smaller for Bransfield Strait waters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-8369.1995.tb00711.x
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  • 5
    Electronic Resource
    Electronic Resource
    Variability of phytoplankton distribution and primary production around Elephant Island, Antarctica, during 1990–1993 (1995)
    Springer
    Polar biology 15 (1995), S. 233-246 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The distribution and abundance of phytoplankton within a sampling grid of 50×103 km2 around Elephant Island were determined from early January to mid-March of 4 successive years, 1990–1993. The number of stations where physical-optical-biological data were obtained from the surface to a maximum of 750 m ranged from 74 in 1990 to 206 in 1993. Contour maps of chlorophyll-a (chl-a) concentrations showed marked mesoscale patchiness that varied from month to month and also interannually. The distribution patterns for chl-a were similar when plotting surface concentrations or integrated values to 100 m. Three major zones could be distinguished that differed in both physical and biological characteristics. Stations in the northwest portion of the grid (Drake Passage waters) and in the southeast portion of the grid (Bransfield Strait waters) showed the most pronounced interannual variations, with phytoplankton biomass and rates of primary production being considerably higher in 1990–91 than in 1992–93. The central portion of the sampling grid, which included the major frontal system north of Elephant Island, showed the smallest interannual variations in both biological and physical parameters and the highest rates of primary production. Phytoplankton biomass and rates of primary production were correlated with depth of the upper mixed layer (UML), which in turn was correlated with the measured wind stress. The mean depth of the UML was 50 m, while the mean depth of the euphotic zone was 90 m. Using the measured mean surface solar irradiance (550 μEinsteins m−2 s−1), the mean irradiance experienced by cells in the UML of 50 m would be around 105 μE m−2 s−1, which is similar to the measured Ik (light saturation) value for photosynthesis (101 μEm−2 s−1). The mean value from all cruises for chl-a in surface waters was 0.7 mg m−3, while the mean rate of primary production was 374 mg Cm−2 day−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00239843
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  • 6
    Electronic Resource
    Electronic Resource
    Phytoplankton around Elephant Island, Antarctica (1993)
    Springer
    Polar biology 13 (1993), S. 183-191 
    Details
    ISSN: 1432-2056
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Phytoplankton studies were conducted in a 4·104 km2 grid around Elephant Island, Antarctica, during January–March 1991. In addition to profiling studies at 50 stations during each of two cruises, pumped surface water was used to continuously record in vivo chlorophyll-a (chl-a) fluorescence and beam attenuation coefficients (ct). Measurements on discrete samples included chl-a, phytoplankton organic carbon (Ac), and total particulate organic carbon (POC). Equations were developed which permitted contour-mapping of chl-a and POC throughout the entire grid based on continuous measurements of in vivo chl-a fluorescence and ct values. Phytoplankton abundance increased from January–February (cruise I) to February–March (cruise II) as evidenced by mean surface chl-a values (0.8 and 1.34 μg l−1, respectively) and mean Ac values for the upper 20 m of the water column (21.3 and 39.8 μg Cl−1, respectively). Microplankton accounted for 29% (cruise I) and 40% (cruise II) of the total phytoplankton, based on direct measurements of chl-a. Patterns for integrated values of chl-a, Ac and POC were similar to patterns of concentrations in surface waters. The richest areas of phytoplankton were north of Elephant and King George Islands, which coincided with high krill density areas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00238928
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  • 7
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    Seawater pH(NBS) and growth rate during experiments with phytoplankton Emiliania huxleyi (CS369), 2009 (2009)
    PANGAEA
    Details
    Publication Date: 2023-03-14
    Keywords: EXP; Experiment; Experimental treatment; Experiment day; Gao_etal_09_T1; Growth rate; pH; pH meter (Mettler Toledo, USA); Salinity; see reference(s); Temperature, water
    Type: Dataset
    Format: text/tab-separated-values, 231 data points
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  • 8
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    Seawater carbonate chemistry and photosynthetic response of Emiliania huxleyi (CS-369) to UV radiation and elevated temperature duirng experiments, 2011 (2011)
    PANGAEA
    In:  Supplement to: Xu, Kai; Gao, Kunshan; Villafañe, Virginia E; Heibling, E W (2011): Photosynthetic responses of Emiliania huxleyi to UV radiation and elevated temperature: roles of calcified coccoliths. Biogeosciences, 8(6), 1441-1452, https://doi.org/10.5194/bg-8-1441-2011
    Details
    Publication Date: 2023-07-07
    Description: Changes in calcification of coccolithophores may affect their photosynthetic responses to both, ultraviolet radiation (UVR, 280-400 nm) and temperature. We operated semi-continuous cultures of Emiliania huxleyi (strain CS-369) at reduced (0.1 mM, LCa) and ambient (10 mM, HCa) Ca2+ concentrations and, after 148 generations, we exposed cells to six radiation treatments (〉280, 〉295, 〉305, 〉320, 〉350 and 〉395 nm by using Schott filters) and two temperatures (20 and 25 °C) to examine photosynthesis and calcification responses. Overall, our study demonstrated that: (1) decreased calcification resulted in a down regulation of photoprotective mechanisms (i.e., as estimated via non-photochemical quenching, NPQ), pigments contents and photosynthetic carbon fixation; (2) calcification (C) and photosynthesis (P) (as well as their ratio) have different responses related to UVR with cells grown under the high Ca2+ concentration being more resistant to UVR than those grown under the low Ca2+ level; (3) elevated temperature increased photosynthesis and calcification of E. huxleyi grown at high Ca2+concentrations whereas decreased both processes in low Ca2+ grown cells. Therefore, a decrease in calcification rates in E. huxleyi is expected to decrease photosynthesis rates, resulting in a negative feedback that further reduces calcification.
    Keywords: Biomass/Abundance/Elemental composition; Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Chromista; Emiliania huxleyi; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Haptophyta; Laboratory experiment; Laboratory strains; Light; Not applicable; OA-ICC; Ocean Acidification International Coordination Centre; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species; Temperature
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 9
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    Seawater carbonate chemistry and biological processes during experiments with phytoplankton Emiliania huxleyi (CS369), 2009 (2009)
    PANGAEA
    Details
    Publication Date: 2023-07-07
    Description: Increasing atmospheric CO2 concentration affects calcification in most planktonic calcifiers. Both reduced or stimulated calcification under high CO2 have been reported in the widespread coccolithophore Emiliania huxleyi. This might affect the response of cells to photosynthetically active radiation (PAR; 400-700 nm) and ultraviolet radiation (UVR; 280-400 nm) by altering the thickness of the coccolith layer. Here we show that in the absence of UVR, the calcification rates in E. huxleyi decrease under lowered pH levels (pHNBS of 7.9 and 7.6; pCO2 of 81 and 178 Pa or 804 and 1759 ppmv, respectively) leading to thinned coccolith layers, whereas photosynthetic carbon fixation was slightly enhanced at pH 7.9 but remained unaffected at pH 7.6. Exposure to UVR (UV-A 19.5 W m**-2, UV-B 0.67 W m**-2) in addition to PAR (88.5 W m**-2), however, results in significant inhibition of both photosynthesis and calcification, and these rates are further inhibited with increasing acidification. The combined effects of UVR and seawater acidification resulted in the inhibition of calcification rates by 96% and 99% and that of photosynthesis by 6% and 15%, at pH 7.9 and 7.6, respectively. This differential inhibition of calcification and photosynthesis leads to significant reduction of the ratio of calcification to photosynthesis. Seawater acidification enhanced the transmission of harmful UVR by about 26% through a reduction of the coccolith layer of 31%. Our data indicate that the effect of a high-CO2 and low-pH ocean on E. huxleyi (because of reduced calcification associated with changes in the carbonate system) enhances the detrimental effects of UVR on the main pelagic calcifier.
    Keywords: Bottles or small containers/Aquaria (〈20 L); Calcification/Dissolution; Chromista; Emiliania huxleyi; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; EXP; Experiment; Gao_etal_09_T1; Gao_etal_09_T2; Growth/Morphology; Haptophyta; Laboratory experiment; Laboratory strains; Not applicable; OA-ICC; Ocean Acidification International Coordination Centre; Pelagos; Phytoplankton; Primary production/Photosynthesis; Single species
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 10
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    Seawater carbonate chemistry and biological weighting function of Emiliania huxleyi (CS-369) during experiments, 2011 (2011)
    PANGAEA
    Details
    Publication Date: 2024-03-15
    Keywords: Alkalinity, total; Alkalinity, total, standard deviation; Aragonite saturation state; Bicarbonate ion; Bicarbonate ion, standard deviation; Biological weighting function; Calcite saturation state; Calcium; Calculated using CO2SYS; Calculated using seacarb after Nisumaa et al. (2010); Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard deviation; Carbonate ion; Carbonate ion, standard deviation; Carbonate system computation flag; Carbon dioxide; Carbon dioxide, partial pressure, standard deviation; Carbon dioxide, standard deviation; Emiliania huxleyi; EPOCA; EUR-OCEANS; European network of excellence for Ocean Ecosystems Analysis; European Project on Ocean Acidification; Fugacity of carbon dioxide (water) at sea surface temperature (wet air); Partial pressure of carbon dioxide (water) at sea surface temperature (wet air); pH; pH, standard deviation; Salinity; see reference(s); Temperature, water; Titration potentiometric; Ultraviolet radiation wavelength
    Type: Dataset
    Format: text/tab-separated-values, 800 data points
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