The role of marine mammals in the Barents Sea foodweb
Marine mammals are important players in the Barents Sea ecosystem but their structural role in the foodweb has been little explored. We compare foodweb-related characteristics within and between phylogenetic groups for 19 marine mammals. As a group, they directly connect to the most central species...
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Language: | English |
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Online Access: | https://hdl.handle.net/11250/2650034 https://doi.org/10.1093/icesjms/fsz136 |
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ftimr:oai:imr.brage.unit.no:11250/2650034 2023-05-15T14:57:45+02:00 The role of marine mammals in the Barents Sea foodweb Blanchet, Marie-Anne Primicerio, Raul Frainer, André Kortsch, Susanne Skern-Mauritzen, Mette Dolgov, Andrey V. Aschan, Michaela 2019 application/pdf https://hdl.handle.net/11250/2650034 https://doi.org/10.1093/icesjms/fsz136 eng eng EC/H2020/677039 ICES Journal of Marine Science. 2019, . urn:issn:1054-3139 https://hdl.handle.net/11250/2650034 https://doi.org/10.1093/icesjms/fsz136 cristin:1719001 17 76 ICES Journal of Marine Science Supplement 1 Peer reviewed Journal article 2019 ftimr https://doi.org/10.1093/icesjms/fsz136 2021-09-23T20:15:52Z Marine mammals are important players in the Barents Sea ecosystem but their structural role in the foodweb has been little explored. We compare foodweb-related characteristics within and between phylogenetic groups for 19 marine mammals. As a group, they directly connect to the most central species (i.e cod and haddock) in the Barents Sea (i.e. cod and haddock) and consume over half of the available species. Pinnipeds are the most homogenous phylogenetic group with high omnivory and high prey richness. Mysticetes are split between well-connected species with high omnivory like the humpback whale, and peripheral specialists like the blue whale. Based on foodweb-derived indices some species consistently cluster together forming two groups, suggesting topological redundancy within them. One is dominated by Arctic seals and the other includes most of the baleen whales. Marine mammals generally contribute to network modularity as their trophic links are mainly within their own module. However, Atlantic species such as the grey seal act as a module connector decreasing modularity. This might negatively affect ecosystem robustness with perturbation effects spreading further and quicker in the foodweb. In the Arctic reaches of the Barents Sea, climate warming is likely to bring about extensive changes in the foodweb structure through a redistribution of species. acceptedVersion publishedVersion Article in Journal/Newspaper Arctic baleen whales Barents Sea Blue whale Humpback Whale Institute for Marine Research: Brage IMR Arctic Barents Sea ICES Journal of Marine Science 76 Supplement_1 i37 i53 |
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Open Polar |
collection |
Institute for Marine Research: Brage IMR |
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ftimr |
language |
English |
description |
Marine mammals are important players in the Barents Sea ecosystem but their structural role in the foodweb has been little explored. We compare foodweb-related characteristics within and between phylogenetic groups for 19 marine mammals. As a group, they directly connect to the most central species (i.e cod and haddock) in the Barents Sea (i.e. cod and haddock) and consume over half of the available species. Pinnipeds are the most homogenous phylogenetic group with high omnivory and high prey richness. Mysticetes are split between well-connected species with high omnivory like the humpback whale, and peripheral specialists like the blue whale. Based on foodweb-derived indices some species consistently cluster together forming two groups, suggesting topological redundancy within them. One is dominated by Arctic seals and the other includes most of the baleen whales. Marine mammals generally contribute to network modularity as their trophic links are mainly within their own module. However, Atlantic species such as the grey seal act as a module connector decreasing modularity. This might negatively affect ecosystem robustness with perturbation effects spreading further and quicker in the foodweb. In the Arctic reaches of the Barents Sea, climate warming is likely to bring about extensive changes in the foodweb structure through a redistribution of species. acceptedVersion publishedVersion |
format |
Article in Journal/Newspaper |
author |
Blanchet, Marie-Anne Primicerio, Raul Frainer, André Kortsch, Susanne Skern-Mauritzen, Mette Dolgov, Andrey V. Aschan, Michaela |
spellingShingle |
Blanchet, Marie-Anne Primicerio, Raul Frainer, André Kortsch, Susanne Skern-Mauritzen, Mette Dolgov, Andrey V. Aschan, Michaela The role of marine mammals in the Barents Sea foodweb |
author_facet |
Blanchet, Marie-Anne Primicerio, Raul Frainer, André Kortsch, Susanne Skern-Mauritzen, Mette Dolgov, Andrey V. Aschan, Michaela |
author_sort |
Blanchet, Marie-Anne |
title |
The role of marine mammals in the Barents Sea foodweb |
title_short |
The role of marine mammals in the Barents Sea foodweb |
title_full |
The role of marine mammals in the Barents Sea foodweb |
title_fullStr |
The role of marine mammals in the Barents Sea foodweb |
title_full_unstemmed |
The role of marine mammals in the Barents Sea foodweb |
title_sort |
role of marine mammals in the barents sea foodweb |
publishDate |
2019 |
url |
https://hdl.handle.net/11250/2650034 https://doi.org/10.1093/icesjms/fsz136 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic baleen whales Barents Sea Blue whale Humpback Whale |
genre_facet |
Arctic baleen whales Barents Sea Blue whale Humpback Whale |
op_source |
17 76 ICES Journal of Marine Science Supplement 1 |
op_relation |
EC/H2020/677039 ICES Journal of Marine Science. 2019, . urn:issn:1054-3139 https://hdl.handle.net/11250/2650034 https://doi.org/10.1093/icesjms/fsz136 cristin:1719001 |
op_doi |
https://doi.org/10.1093/icesjms/fsz136 |
container_title |
ICES Journal of Marine Science |
container_volume |
76 |
container_issue |
Supplement_1 |
container_start_page |
i37 |
op_container_end_page |
i53 |
_version_ |
1766329879079419904 |