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  • 2015-2019  (174)
  • 2010-2014  (94)
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  • 1
    Online Resource
    Online Resource
    [Place of publication not identified] : Springer International Publishing
    Description / Table of Contents: Verlagsbeschreibung: "This book describes how man-made litter, primarily plastic, has spread into the remotest parts of the oceans and covers all aspects of this pollution problem from the impacts on wildlife and human health to socio-economic and political issues. Marine litter is a prime threat to marine wildlife, habitats and food webs worldwide.The book illustrates how advanced technologies from deep-sea research, microbiology and mathematic modelling as well as classic beach litter counts by volunteers contributed to the broad awareness of marine litter as a problem of global significance. The authors summarise more than five decades of marine litter research, which receives growing attention after the recent discovery of great oceanic garbage patches and the ubiquity of microscopic plastic particles in marine organisms and habitats. In 16 chapters, authors from all over the world have created a universal view on the diverse field of marine litter pollution, the biological impacts, dedicated research activities, and the various national and international legislative efforts to combat this environmental problem. They recommend future research directions necessary for a comprehensive understanding of this environmental issue and the development of efficient management strategies. This book addresses scientists, and it provides a solid knowledge base for policy makers, NGOs, and the broader public."
    Type of Medium: Online Resource
    Pages: Online-Ressource (PDF-Datei: 447 S., 9,177 KB)
    ISBN: 9783319165103
    Language: English
    Note: Open Access : This content is freely available online to anyone, anywhere at any time , Parallel als Buch-Ausg. erschienen
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  • 2
    Online Resource
    Online Resource
    Cham : Springer International Publishing AG
    Keywords: Electronic books
    Description / Table of Contents: Intro -- Foreword -- Preface -- Acknowledgments -- Contents -- 1 A Brief History of Marine Litter Research -- Abstract -- 1.1 Introduction -- 1.2 Seabirds and Seals-The First Signs of Trouble -- 1.3 The Early 1970s-Pellets and Other Problems in the North Atlantic -- 1.4 Shifting Focus to the North Pacific Ocean -- 1.5 Into the Southern Hemisphere -- 1.6 Aloha-The Marine Debris Conferences -- 1.7 Mitigation Measures and Long-Term Changes in Marine Litter -- 1.8 Plastic Degradation and the Microplastic Boom -- 1.9 Summary and Conclusions -- References -- Part I Abiotic Aspects of Marine Litter Pollution -- 2 Global Distribution, Composition and Abundance of Marine Litter -- Abstract -- 2.1 Introduction -- 2.2 Composition -- 2.3 Distribution -- 2.3.1 Beaches -- 2.3.2 Floating Marine Debris -- 2.3.3 Seafloor -- 2.3.4 Microplastics -- 2.4 Summary and Conclusions -- References -- 3 Persistence of Plastic Litter in the Oceans -- Abstract -- 3.1 Introduction -- 3.2 Buoyancy and Sampling Errors -- 3.3 Fate of Plastics Entering the Oceans -- 3.3.1 Photo-Oxidative Degradation -- 3.3.2 Mechanisms of Photo-Oxidation -- 3.3.3 Weathering Under Marine Conditions -- 3.4 Microplastics in the Oceans -- 3.5 Conclusions -- References -- Part II Biological Implications of Marine Litter -- 4 Deleterious Effects of Litter on Marine Life -- Abstract -- 4.1 Introduction -- 4.2 Entanglement -- 4.2.1 Ways of Entanglement -- 4.2.2 Effects of Entanglement -- 4.3 Smothering -- 4.4 Ingestion of Plastic -- 4.4.1 Ways of Plastic Ingestion -- 4.4.1.1 Intentional Ingestion -- Foraging Strategy -- Color -- Age -- Sex -- 4.4.1.2 Accidental and Secondary Ingestion -- 4.4.2 Impacts of Plastic Ingestion -- 4.4.2.1 Direct Mortality Caused by Plastic Ingestion -- 4.4.3 Indirect Physical Effects of Plastic Ingestion -- 4.4.3.1 Chemical Effects from Plastic Ingestion.
    Type of Medium: Online Resource
    Pages: 1 online resource (456 pages)
    ISBN: 9783319165103
    DDC: 363.728509162
    Language: English
    Note: Description based on publisher supplied metadata and other sources
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  • 3
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: Online-Ressource (86 S., 2,54 MB) , Illustrationen, graphische Darstellungen
    Language: German
    Note: Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Förderkennzeichen BMU 0327689A , Systemvoraussetzungen: Acrobat reader. , Mit deutscher Zusammenfassung
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  • 4
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    American Chemistry Society
    In:  Environmental Science & Technology, 50 (2). pp. 915-923.
    Publication Date: 2019-02-01
    Description: The ingestion of microplastics has been shown for a great variety of marine organisms. However, benthic marine mesoherbivores such as the common periwinkle Littorina littorea have been largely disregarded in studies about the effects of microplastics on the marine biota, probably because the pathway for microplastics to this functional group of organisms was not obvious. In laboratory experiments we showed that the seaweed Fucus vesiculosus retains suspended microplastics on its surface. The numbers of microplastics that adhered to the algae correlated with the concentrations of suspended particles in the water. In choice feeding assays L. littorea did not distinguish between algae with adherent microplastics and clean algae without microplastics, indicating that the snails do not recognize solid nonfood particles in the submillimeter size range as deleterious. In periwinkles that were feeding on contaminated algae, microplastics were found in the stomach and in the gut. However, no microplastics were found in the midgut gland, which is the principle digestive organ of gastropods. Microplastics in the fecal pellets of the periwinkles indicate that the particles do not accumulate rapidly inside the animals but are mostly released with the feces. Our results provide the first evidence that seaweeds may represent an efficient pathway for microplastics from the water to marine benthic herbivores.
    Type: Article , PeerReviewed
    Format: text
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  • 5
    Publication Date: 2020-06-23
    Description: Our objective for this study was to evaluate the influence of preindustrial and expected future atmospheric CO2 concentrations (280 μatm and 700 μatm pCO2, respectively) on different life-cycle stages of the kelp Laminaria hyperborea from Helgoland (Germany, North Sea). Zoospore germination, gametogenesis, vegetative growth, sorus formation and photosynthetic performance of vegetative and fertile tissue were examined. The contribution of external carbonic anhydrase (exCA) to C-supply for net-photosynthesis (net-PS) and the Chla- and phlorotannin content were investigated. Female gametogenesis and vegetative growth of sporophytes were significantly enhanced under the expected future pCO2. rETR(max) and net-PS of young vegetative sporophytes tended to increase performance at higher pCO2. The trend towards elevated net-PS vanished after inhibition of exCA. In vegetative sporophytes, phlorotannin content and Chla content were not significantly affected by pCO2.
    Type: Article , PeerReviewed
    Format: text
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  • 6
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    American Chemistry Society
    In:  Environmental Science & Technology, 50 (2). pp. 915-923.
    Publication Date: 2019-02-01
    Description: The ingestion of microplastics has been shown for a great variety of marine organisms. However, benthic marine mesoherbivores such as the common periwinkle Littorina littorea have been largely disregarded in studies about the effects of microplastics on the marine biota, probably because the pathway for microplastics to this functional group of organisms was not obvious. In laboratory experiments we showed that the seaweed Fucus vesiculosus retains suspended microplastics on its surface. The numbers of microplastics that adhered to the algae correlated with the concentrations of suspended particles in the water. In choice feeding assays L. littorea did not distinguish between algae with adherent microplastics and clean algae without microplastics, indicating that the snails do not recognize solid nonfood particles in the submillimeter size range as deleterious. In periwinkles that were feeding on contaminated algae, microplastics were found in the stomach and in the gut. However, no microplastics were found in the midgut gland, which is the principle digestive organ of gastropods. Microplastics in the fecal pellets of the periwinkles indicate that the particles do not accumulate rapidly inside the animals but are mostly released with the feces. Our results provide the first evidence that seaweeds may represent an efficient pathway for microplastics from the water to marine benthic herbivores.
    Type: Article , PeerReviewed
    Format: text
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  • 7
    Publication Date: 2019-09-23
    Type: Conference or Workshop Item , NonPeerReviewed
    Format: text
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  • 8
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    PANGAEA
    In:  Supplement to: Bergmann, Melanie; Lutz, Birgit; Tekman, Mine Banu; Gutow, Lars (2017): Citizen scientists reveal: Marine litter pollutes Arctic beaches and affects wild life. Marine Pollution Bulletin, 125(1-2), 535-540, https://doi.org/10.1016/j.marpolbul.2017.09.055
    Publication Date: 2023-03-16
    Description: Beaches on remote Arctic islands may be sinks for marine litter and reflect pollution levels of the surrounding waters particularly well. We provide the first quantitative data from surveys carried out by citizen scientists on six beaches of northern Svalbard. Litter quantities recorded by cruise tourists varied from 9-524 g m-2 and were similar to those from densely populated areas. Plastics accounted for 〉80% of the overall litter, most of which originated from fisheries. Our study highlights the potential of citizen scientists to provide scientifically valuable data on the pollution of sensitive remote ecosystems. The results stress once more that current legislative frameworks are insufficient to tackle the pollution of Arctic ecosystems.
    Keywords: Alpinioya; Area; Brucebukta; Crozierpynten; DATE/TIME; Event label; FRAM; FRontiers in Arctic marine Monitoring; HAND; Isflakbukta; Latitude of event; Longitude of event; Marine litter, biotic; Marine litter, fabric; Marine litter, glass; Marine litter, metal; Marine litter, plastic; Marine litter, total; Method comment; Reinstrandodden; Sampling by hand; Sediment type; Sorvika; Svalbard
    Type: Dataset
    Format: text/tab-separated-values, 66 data points
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  • 9
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    PANGAEA
    In:  Supplement to: Gutow, Lars; Petersen, Imke; Bartl, Kevin; Hünerlage, Kim (2016): Marine meso-herbivore consumption scales faster with temperature than seaweed primary production. Journal of Experimental Marine Biology and Ecology, 477, 80-85, https://doi.org/10.1016/j.jembe.2016.01.009
    Publication Date: 2023-01-13
    Description: Respiration of ectotherms is predicted to increase faster with rising environmental temperature than photosynthesis of primary producers because of the differential temperature dependent kinetics of the key enzymes involved. Accordingly, if biological processes at higher levels of complexity are constrained by underlying metabolic functions food consumption by heterotrophs should increase more rapidly with rising temperature than photo-autoptrophic primary production. We compared rates of photosynthesis and growth of the benthic seaweed Fucus vesiculosus with respiration and consumption of the isopod Idotea baltica to achieve a mechanistic understanding why warming strengthens marine plant-herbivore interactions. In laboratory experiments thallus pieces of the seaweed and individuals of the grazer were exposed to constant temperatures at a range from 10 to 20°C. Photosynthesis of F. vesiculosus did not vary with temperature indicating efficient thermal acclimation whereas growth of the algae clearly increased with temperature. Respiration and food consumption of I. baltica also increased with temperature. Grazer consumption scaled about 2.5 times faster with temperature than seaweed production. The resulting mismatch between algal production and herbivore consumption may result in a net loss of algal tissue at elevated temperatures. Our study provides an explanation for faster decomposition of seaweeds at elevated temperatures despite the positive effects of high temperatures on algal growth.
    Type: Dataset
    Format: application/zip, 1.8 MBytes
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  • 10
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    PANGAEA
    In:  Supplement to: Olischläger, Mark; Bartsch, Inka; Gutow, Lars; Wiencke, Christian (2013): Effects of ocean acidification on growth and physiology of Ulva lactuca (Chlorophyta) in a rockpool-scenario. Phycological Research, 61(3), 180-190, https://doi.org/10.1111/pre.12006
    Publication Date: 2023-06-13
    Description: Rising atmospheric CO2-concentrations will have severe consequences for a variety of biological processes. We investigated the responses of the green alga Ulva lactuca (Linnaeus) to rising CO2-concentrations in a rockpool scenario. U. lactuca was cultured under aeraton with air containing either preindustrial pCO2 (280µatm) or for the end of the 21st century predicted (700µatm) pCO2 for 31 days. We addressed the following question: Will elevated CO2-concentrations affect photosynthesis (net photosynthesis, rETR(max), Fv/Fm, pigment composition) and growth of U. lactuca in rockpools with limited water exchange? Two phases of the experiment were distinguished: In the initial phase (day 1-4) the Seawater Carbonate System (SWCS) of the culture medium could be adjusted to the selected atmospheric pCO2 condition by continuous aeration with target pCO2 values. In the second phase (day 4-31) the SWCS was largely determined by the metabolism of the growing U. lactuca biomass. In the initial phase, Fv/Fm and rETR(max) were only slightly elevated at high CO2-concentrations whereas growth was significantly enhanced. After 31 days the Chl a content of the thalli was significantly lower under future conditions and the photosynthesis of thalli grown under preindustrial conditions was not dependent on external carbonic anhydrase. Biomass increased significantly at high CO2-concentrations. At low CO2-concentrations most adult thalli disintegrated between day 14 and 21, whereas at high CO2-concentrations most thalli remained integer until day 31. Thallus disintegration at low CO2-concentrations was mirrored in a drastic decline in seawater DIC and HCO3-. Accordingly, the SWCS differed significantly between the treatments. Our results indicated a slight enhancement of photosynthetic performance and significantly elevated growth of U. lactuca at future CO2-concentrations. The accelerated thallus disintegration at high CO2-concentrations under conditions of limited water exchange indicates additional CO2 effects on the life cycle of U. lactuca when living in rockpools.
    Keywords: AWI_Coast; BIOACID; Biological Impacts of Ocean Acidification; Coastal Ecology @ AWI
    Type: Dataset
    Format: application/zip, 2.5 MBytes
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