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  • 2015-2019  (68)
  • 2017  (33)
  • 2016  (35)
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  • 2015-2019  (68)
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  • 1
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    Experimental Evaluation of Seaweeds as a Vector for Microplastics into Marine Food Webs (2016)
    American Chemistry Society
    In:  Environmental Science & Technology, 50 (2). pp. 915-923.
    Details
    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
    DOI: 10.1021/acs.est.5b02431
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 2
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    Experimental evaluation of seaweeds as a vector for microplastics into marine food webs (2016)
    American Chemistry Society
    In:  Environmental Science & Technology, 50 (2). pp. 915-923.
    Details
    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
    DOI: 10.1021/acs.est.5b02431
    Location Call Number Limitation Availability
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    OceanRep: Article in a Scientific Journal - peer-reviewed
  • 3
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    Marine Litter quantities on six Beaches of northern Svalbard in 2016 determined by citizen scientists (2017)
    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
    Details
    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
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 4
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    Marine meso-herbivore consumption scales faster with temperature than seaweed primary production, supplementary material (2016)
    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
    Details
    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
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 5
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    Continuous thermosalinograph oceanography along HEINCKE cruise track HE340 (2016)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-12
    Keywords: AWI_PhyOce; CT; DATE/TIME; DEPTH, water; HE340; HE340-track; Heincke; LATITUDE; LONGITUDE; North Sea; Physical Oceanography @ AWI; Salinity; Temperature, water; Thermosalinograph; TSG; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 2410 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 6
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    Continuous thermosalinograph oceanography along HEINCKE cruise track HE373 (2016)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-12
    Keywords: AWI_PhyOce; CT; DATE/TIME; DEPTH, water; HE373; HE373-track; Heincke; LATITUDE; LONGITUDE; North Sea German Bight; Physical Oceanography @ AWI; Salinity; Temperature, water; Thermosalinograph; TSG; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 3552 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 7
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    Continuous thermosalinograph oceanography along HEINCKE cruise track HE390 (2016)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-12
    Keywords: AWI_PhyOce; CT; DATE/TIME; DEPTH, water; German Bight; HE390; HE390-track; Heincke; LATITUDE; LONGITUDE; Physical Oceanography @ AWI; Salinity; Temperature, water; Thermosalinograph; TSG; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 3996 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 8
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    Continuous thermosalinograph oceanography along HEINCKE cruise track HE419 (2016)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-12
    Keywords: AWI_PhyOce; CT; DATE/TIME; DEPTH, water; HE419; HE419-track; Heincke; LATITUDE; LONGITUDE; Physical Oceanography @ AWI; Salinity; Temperature, water; Thermosalinograph; TSG; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 218 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 9
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    Station list and links to master tracks in different resolutions of HEINCKE cruise HE467, Bremerhaven - Bremerhaven, 2016-07-08 - 2016-07-17 (2016)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-12
    Keywords: Calculated; Course; CT; DATE/TIME; HE467; HE467-track; Heincke; LATITUDE; LONGITUDE; North Sea; Speed; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 2880 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 10
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    Station list and links to master tracks in different resolutions of HEINCKE cruise HE489, Bremerhaven - Bremerhaven, 2017-06-08 - 2017-06-18 (2017)
    PANGAEA
    In:  Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
    Details
    Publication Date: 2024-01-12
    Keywords: Calculated; Course; CT; DATE/TIME; HE489; HE489-track; Heincke; LATITUDE; LONGITUDE; North Sea; Speed; Underway cruise track measurements
    Type: Dataset
    Format: text/tab-separated-values, 2668 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
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