The role of marine mammals in the Barents Sea foodweb
Abstract 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...
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Oxford University Press (OUP)
2019
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Online Access: | http://dx.doi.org/10.1093/icesjms/fsz136 http://academic.oup.com/icesjms/article-pdf/76/Supplement_1/i37/31809212/fsz136.pdf |
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croxfordunivpr:10.1093/icesjms/fsz136 2024-10-06T13:46:18+00:00 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 Coll, Marta Horizon 2020 2019 http://dx.doi.org/10.1093/icesjms/fsz136 http://academic.oup.com/icesjms/article-pdf/76/Supplement_1/i37/31809212/fsz136.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model ICES Journal of Marine Science volume 76, issue Supplement_1, page i37-i53 ISSN 1054-3139 1095-9289 journal-article 2019 croxfordunivpr https://doi.org/10.1093/icesjms/fsz136 2024-09-10T04:11:27Z Abstract 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. Article in Journal/Newspaper Arctic baleen whales Barents Sea Blue whale Humpback Whale Oxford University Press Arctic Barents Sea ICES Journal of Marine Science 76 Supplement_1 i37 i53 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract 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. |
author2 |
Coll, Marta Horizon 2020 |
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 |
publisher |
Oxford University Press (OUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1093/icesjms/fsz136 http://academic.oup.com/icesjms/article-pdf/76/Supplement_1/i37/31809212/fsz136.pdf |
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 |
ICES Journal of Marine Science volume 76, issue Supplement_1, page i37-i53 ISSN 1054-3139 1095-9289 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
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_ |
1812174591519358976 |