Polar cod in jeopardy under the retreating Arctic sea ice
The Arctic amplification of global warming is causing the Arctic-Atlantic ice edge to retreat at unprecedented rates. Here we show how variability and change in sea ice cover in the Barents Sea, the largest shelf sea of the Arctic, affect the population dynamics of a keystone species of the ice-asso...
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ftimr:oai:imr.brage.unit.no:11250/2635683 2023-05-15T14:39:29+02:00 Polar cod in jeopardy under the retreating Arctic sea ice Huserbråten, Mats Brockstedt Olsen Eriksen, Elena Gjøsæter, Harald Vikebø, Frode Bendiksen 2019 application/pdf http://hdl.handle.net/11250/2635683 https://doi.org/10.1038/s42003-019-0649-2 eng eng Communications Biology. 2019, . urn:issn:2399-3642 http://hdl.handle.net/11250/2635683 https://doi.org/10.1038/s42003-019-0649-2 cristin:1755210 8 2 Communications Biology Journal article Peer reviewed 2019 ftimr https://doi.org/10.1038/s42003-019-0649-2 2021-09-23T20:15:58Z The Arctic amplification of global warming is causing the Arctic-Atlantic ice edge to retreat at unprecedented rates. Here we show how variability and change in sea ice cover in the Barents Sea, the largest shelf sea of the Arctic, affect the population dynamics of a keystone species of the ice-associated food web, the polar cod (Boreogadus saida). The data-driven biophysical model of polar cod early life stages assembled here predicts a strong mechanistic link between survival and variation in ice cover and temperature, suggesting imminent recruitment collapse should the observed ice-reduction and heating continue. Backtracking of drifting eggs and larvae from observations also demonstrates a northward retreat of one of two clearly defined spawning assemblages, possibly in response to warming. With annual to decadal ice-predictions under development the mechanistic physical-biological links presented here represent a powerful tool for making long-term predictions for the propagation of polar cod stocks. publishedVersion Article in Journal/Newspaper Arctic Barents Sea Boreogadus saida Global warming polar cod Sea ice Institute for Marine Research: Brage IMR Arctic Barents Sea Communications Biology 2 1 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
The Arctic amplification of global warming is causing the Arctic-Atlantic ice edge to retreat at unprecedented rates. Here we show how variability and change in sea ice cover in the Barents Sea, the largest shelf sea of the Arctic, affect the population dynamics of a keystone species of the ice-associated food web, the polar cod (Boreogadus saida). The data-driven biophysical model of polar cod early life stages assembled here predicts a strong mechanistic link between survival and variation in ice cover and temperature, suggesting imminent recruitment collapse should the observed ice-reduction and heating continue. Backtracking of drifting eggs and larvae from observations also demonstrates a northward retreat of one of two clearly defined spawning assemblages, possibly in response to warming. With annual to decadal ice-predictions under development the mechanistic physical-biological links presented here represent a powerful tool for making long-term predictions for the propagation of polar cod stocks. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Huserbråten, Mats Brockstedt Olsen Eriksen, Elena Gjøsæter, Harald Vikebø, Frode Bendiksen |
spellingShingle |
Huserbråten, Mats Brockstedt Olsen Eriksen, Elena Gjøsæter, Harald Vikebø, Frode Bendiksen Polar cod in jeopardy under the retreating Arctic sea ice |
author_facet |
Huserbråten, Mats Brockstedt Olsen Eriksen, Elena Gjøsæter, Harald Vikebø, Frode Bendiksen |
author_sort |
Huserbråten, Mats Brockstedt Olsen |
title |
Polar cod in jeopardy under the retreating Arctic sea ice |
title_short |
Polar cod in jeopardy under the retreating Arctic sea ice |
title_full |
Polar cod in jeopardy under the retreating Arctic sea ice |
title_fullStr |
Polar cod in jeopardy under the retreating Arctic sea ice |
title_full_unstemmed |
Polar cod in jeopardy under the retreating Arctic sea ice |
title_sort |
polar cod in jeopardy under the retreating arctic sea ice |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2635683 https://doi.org/10.1038/s42003-019-0649-2 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Boreogadus saida Global warming polar cod Sea ice |
genre_facet |
Arctic Barents Sea Boreogadus saida Global warming polar cod Sea ice |
op_source |
8 2 Communications Biology |
op_relation |
Communications Biology. 2019, . urn:issn:2399-3642 http://hdl.handle.net/11250/2635683 https://doi.org/10.1038/s42003-019-0649-2 cristin:1755210 |
op_doi |
https://doi.org/10.1038/s42003-019-0649-2 |
container_title |
Communications Biology |
container_volume |
2 |
container_issue |
1 |
_version_ |
1766311470973321216 |