Temporal Dynamics of Top Predators Interactions in the Barents Sea
The Barents Sea system is often depicted as a simple food web in terms of number of dominant feeding links. The most conspicuous feeding link is between the Northeast Arctic cod Gadus morhua, the world's largest cod stock which is presently at a historical high level, and capelin Mallotus villo...
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ftpubmed:oai:pubmedcentral.nih.gov:4218717 2023-05-15T14:30:29+02:00 Temporal Dynamics of Top Predators Interactions in the Barents Sea Durant, Joël M. Skern-Mauritzen, Mette Krasnov, Yuri V. Nikolaeva, Natalia G. Lindstrøm, Ulf Dolgov, Andrey 2014-11-03 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4218717 http://www.ncbi.nlm.nih.gov/pubmed/25365430 https://doi.org/10.1371/journal.pone.0110933 en eng Public Library of Science http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/25365430 http://dx.doi.org/10.1371/journal.pone.0110933 This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. CC-BY Research Article Text 2014 ftpubmed https://doi.org/10.1371/journal.pone.0110933 2014-11-09T01:25:40Z The Barents Sea system is often depicted as a simple food web in terms of number of dominant feeding links. The most conspicuous feeding link is between the Northeast Arctic cod Gadus morhua, the world's largest cod stock which is presently at a historical high level, and capelin Mallotus villosus. The system also holds diverse seabird and marine mammal communities. Previous diet studies may suggest that these top predators (cod, bird and sea mammals) compete for food particularly with respect to pelagic fish such as capelin and juvenile herring (Clupea harengus), and krill. In this paper we explored the diet of some Barents Sea top predators (cod, Black-legged kittiwake Rissa tridactyla, Common guillemot Uria aalge, and Minke whale Balaenoptera acutorostrata). We developed a GAM modelling approach to analyse the temporal variation diet composition within and between predators, to explore intra- and inter-specific interactions. The GAM models demonstrated that the seabird diet is temperature dependent while the diet of Minke whale and cod is prey dependent; Minke whale and cod diets depend on the abundance of herring and capelin, respectively. There was significant diet overlap between cod and Minke whale, and between kittiwake and guillemot. In general, the diet overlap between predators increased with changes in herring and krill abundances. The diet overlap models developed in this study may help to identify inter-specific interactions and their dynamics that potentially affect the stocks targeted by fisheries. Text Arctic cod Arctic Balaenoptera acutorostrata Barents Sea Black-legged Kittiwake common guillemot Gadus morhua minke whale Northeast Arctic cod rissa tridactyla Uria aalge uria PubMed Central (PMC) Arctic Barents Sea Gam ENVELOPE(-57.955,-57.955,-61.923,-61.923) PLoS ONE 9 11 e110933 |
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ftpubmed |
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English |
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Research Article |
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Research Article Durant, Joël M. Skern-Mauritzen, Mette Krasnov, Yuri V. Nikolaeva, Natalia G. Lindstrøm, Ulf Dolgov, Andrey Temporal Dynamics of Top Predators Interactions in the Barents Sea |
topic_facet |
Research Article |
description |
The Barents Sea system is often depicted as a simple food web in terms of number of dominant feeding links. The most conspicuous feeding link is between the Northeast Arctic cod Gadus morhua, the world's largest cod stock which is presently at a historical high level, and capelin Mallotus villosus. The system also holds diverse seabird and marine mammal communities. Previous diet studies may suggest that these top predators (cod, bird and sea mammals) compete for food particularly with respect to pelagic fish such as capelin and juvenile herring (Clupea harengus), and krill. In this paper we explored the diet of some Barents Sea top predators (cod, Black-legged kittiwake Rissa tridactyla, Common guillemot Uria aalge, and Minke whale Balaenoptera acutorostrata). We developed a GAM modelling approach to analyse the temporal variation diet composition within and between predators, to explore intra- and inter-specific interactions. The GAM models demonstrated that the seabird diet is temperature dependent while the diet of Minke whale and cod is prey dependent; Minke whale and cod diets depend on the abundance of herring and capelin, respectively. There was significant diet overlap between cod and Minke whale, and between kittiwake and guillemot. In general, the diet overlap between predators increased with changes in herring and krill abundances. The diet overlap models developed in this study may help to identify inter-specific interactions and their dynamics that potentially affect the stocks targeted by fisheries. |
format |
Text |
author |
Durant, Joël M. Skern-Mauritzen, Mette Krasnov, Yuri V. Nikolaeva, Natalia G. Lindstrøm, Ulf Dolgov, Andrey |
author_facet |
Durant, Joël M. Skern-Mauritzen, Mette Krasnov, Yuri V. Nikolaeva, Natalia G. Lindstrøm, Ulf Dolgov, Andrey |
author_sort |
Durant, Joël M. |
title |
Temporal Dynamics of Top Predators Interactions in the Barents Sea |
title_short |
Temporal Dynamics of Top Predators Interactions in the Barents Sea |
title_full |
Temporal Dynamics of Top Predators Interactions in the Barents Sea |
title_fullStr |
Temporal Dynamics of Top Predators Interactions in the Barents Sea |
title_full_unstemmed |
Temporal Dynamics of Top Predators Interactions in the Barents Sea |
title_sort |
temporal dynamics of top predators interactions in the barents sea |
publisher |
Public Library of Science |
publishDate |
2014 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4218717 http://www.ncbi.nlm.nih.gov/pubmed/25365430 https://doi.org/10.1371/journal.pone.0110933 |
long_lat |
ENVELOPE(-57.955,-57.955,-61.923,-61.923) |
geographic |
Arctic Barents Sea Gam |
geographic_facet |
Arctic Barents Sea Gam |
genre |
Arctic cod Arctic Balaenoptera acutorostrata Barents Sea Black-legged Kittiwake common guillemot Gadus morhua minke whale Northeast Arctic cod rissa tridactyla Uria aalge uria |
genre_facet |
Arctic cod Arctic Balaenoptera acutorostrata Barents Sea Black-legged Kittiwake common guillemot Gadus morhua minke whale Northeast Arctic cod rissa tridactyla Uria aalge uria |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC http://www.ncbi.nlm.nih.gov/pubmed/25365430 http://dx.doi.org/10.1371/journal.pone.0110933 |
op_rights |
This is an open-access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1371/journal.pone.0110933 |
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PLoS ONE |
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9 |
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11 |
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e110933 |
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