Climate change impacts on Antarctic krill behaviour and population dynamics
Krill habitats in the Southern Ocean are impacted by changing climate conditions, reduced sea ice and rising temperatures. These changes, in turn, affect krill occurrence, physiology and behaviour, which could have ecosystem impacts. In this Review, we examine climate change impacts on Antarctic kri...
Published in: | Nature Reviews Earth & Environment |
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Springer Science and Business Media LLC
2023
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ftawi:oai:epic.awi.de:58188 2024-02-11T09:56:10+01:00 Climate change impacts on Antarctic krill behaviour and population dynamics Kawaguchi, So Atkinson, Angus Bahlburg, Dominik Bernard, Kim S Cavan, Emma L Cox, Martin J Hill, Simeon L Meyer, Bettina Veytia, Devi 2023-12-19 application/pdf https://epic.awi.de/id/eprint/58188/ https://epic.awi.de/id/eprint/58188/1/2023,%20Kawaguchi%20et%20al%202023.pdf https://doi.org/10.1038/s43017-023-00504-y https://hdl.handle.net/10013/epic.abcde034-3fb0-40ae-9566-4ef702cbea0f unknown Springer Science and Business Media LLC https://epic.awi.de/id/eprint/58188/1/2023,%20Kawaguchi%20et%20al%202023.pdf Kawaguchi, S. , Atkinson, A. , Bahlburg, D. , Bernard, K. S. , Cavan, E. L. , Cox, M. J. , Hill, S. L. , Meyer, B. orcid:0000-0001-6804-9896 and Veytia, D. (2023) Climate change impacts on Antarctic krill behaviour and population dynamics , Nature Reviews Earth & Environment . doi:10.1038/s43017-023-00504-y <https://doi.org/10.1038/s43017-023-00504-y> , hdl:10013/epic.abcde034-3fb0-40ae-9566-4ef702cbea0f EPIC3Nature Reviews Earth & Environment, Springer Science and Business Media LLC, ISSN: 2662-138X Article isiRev 2023 ftawi https://doi.org/10.1038/s43017-023-00504-y 2024-01-15T00:23:10Z Krill habitats in the Southern Ocean are impacted by changing climate conditions, reduced sea ice and rising temperatures. These changes, in turn, affect krill occurrence, physiology and behaviour, which could have ecosystem impacts. In this Review, we examine climate change impacts on Antarctic krill and the potential implications for the Southern Ocean ecosystem. Since the 1970s, there have been apparent reductions in adult population density and the occurrence of very dense swarms in the northern Southwest Atlantic. These changes were associated with latitudinal and longitudinal rearrangement of population distribution — including a poleward contraction in the Southwest Atlantic — and were likely driven by ocean warming, sea-ice reductions and changes in the quality of larval habitats. As swarms are targeted by fishers and predators, this contraction could increase fishery–predator interactions, potentially exacerbating risk to already declining penguin populations and recovering whale populations. These risks require urgent mitigation measures to be developed. A circumpolar monitoring network using emerging technologies is needed to augment existing surveys and better record the shifts in krill distribution. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Sea ice Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic Southern Ocean Nature Reviews Earth & Environment |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Krill habitats in the Southern Ocean are impacted by changing climate conditions, reduced sea ice and rising temperatures. These changes, in turn, affect krill occurrence, physiology and behaviour, which could have ecosystem impacts. In this Review, we examine climate change impacts on Antarctic krill and the potential implications for the Southern Ocean ecosystem. Since the 1970s, there have been apparent reductions in adult population density and the occurrence of very dense swarms in the northern Southwest Atlantic. These changes were associated with latitudinal and longitudinal rearrangement of population distribution — including a poleward contraction in the Southwest Atlantic — and were likely driven by ocean warming, sea-ice reductions and changes in the quality of larval habitats. As swarms are targeted by fishers and predators, this contraction could increase fishery–predator interactions, potentially exacerbating risk to already declining penguin populations and recovering whale populations. These risks require urgent mitigation measures to be developed. A circumpolar monitoring network using emerging technologies is needed to augment existing surveys and better record the shifts in krill distribution. |
format |
Article in Journal/Newspaper |
author |
Kawaguchi, So Atkinson, Angus Bahlburg, Dominik Bernard, Kim S Cavan, Emma L Cox, Martin J Hill, Simeon L Meyer, Bettina Veytia, Devi |
spellingShingle |
Kawaguchi, So Atkinson, Angus Bahlburg, Dominik Bernard, Kim S Cavan, Emma L Cox, Martin J Hill, Simeon L Meyer, Bettina Veytia, Devi Climate change impacts on Antarctic krill behaviour and population dynamics |
author_facet |
Kawaguchi, So Atkinson, Angus Bahlburg, Dominik Bernard, Kim S Cavan, Emma L Cox, Martin J Hill, Simeon L Meyer, Bettina Veytia, Devi |
author_sort |
Kawaguchi, So |
title |
Climate change impacts on Antarctic krill behaviour and population dynamics |
title_short |
Climate change impacts on Antarctic krill behaviour and population dynamics |
title_full |
Climate change impacts on Antarctic krill behaviour and population dynamics |
title_fullStr |
Climate change impacts on Antarctic krill behaviour and population dynamics |
title_full_unstemmed |
Climate change impacts on Antarctic krill behaviour and population dynamics |
title_sort |
climate change impacts on antarctic krill behaviour and population dynamics |
publisher |
Springer Science and Business Media LLC |
publishDate |
2023 |
url |
https://epic.awi.de/id/eprint/58188/ https://epic.awi.de/id/eprint/58188/1/2023,%20Kawaguchi%20et%20al%202023.pdf https://doi.org/10.1038/s43017-023-00504-y https://hdl.handle.net/10013/epic.abcde034-3fb0-40ae-9566-4ef702cbea0f |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Sea ice Southern Ocean |
op_source |
EPIC3Nature Reviews Earth & Environment, Springer Science and Business Media LLC, ISSN: 2662-138X |
op_relation |
https://epic.awi.de/id/eprint/58188/1/2023,%20Kawaguchi%20et%20al%202023.pdf Kawaguchi, S. , Atkinson, A. , Bahlburg, D. , Bernard, K. S. , Cavan, E. L. , Cox, M. J. , Hill, S. L. , Meyer, B. orcid:0000-0001-6804-9896 and Veytia, D. (2023) Climate change impacts on Antarctic krill behaviour and population dynamics , Nature Reviews Earth & Environment . doi:10.1038/s43017-023-00504-y <https://doi.org/10.1038/s43017-023-00504-y> , hdl:10013/epic.abcde034-3fb0-40ae-9566-4ef702cbea0f |
op_doi |
https://doi.org/10.1038/s43017-023-00504-y |
container_title |
Nature Reviews Earth & Environment |
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1790601033215377408 |