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...
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ftnerc:oai:nora.nerc.ac.uk:535823 2024-02-11T09:58:13+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 Hill, Simeon L. Meyer, Bettina Veytia, Devi 2023-12-19 http://nora.nerc.ac.uk/id/eprint/535823/ https://www.nature.com/articles/s43017-023-00504-y unknown Nature Research Kawaguchi, So; Atkinson, Angus; Bahlburg, Dominik; Bernard, Kim S.; Cavan, Emma L.; Cox, Martin; Hill, Simeon L. orcid:0000-0003-1441-8769 Meyer, Bettina; Veytia, Devi. 2023 Climate change impacts on Antarctic krill behaviour and population dynamics. Nature Reviews Earth & Environment. 16, pp. https://doi.org/10.1038/s43017-023-00504-y <https://doi.org/10.1038/s43017-023-00504-y> Publication - Article PeerReviewed 2023 ftnerc 2024-01-12T00:03:13Z 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 Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean |
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Natural Environment Research Council: NERC Open Research Archive |
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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 Hill, Simeon L. Meyer, Bettina Veytia, Devi |
spellingShingle |
Kawaguchi, So Atkinson, Angus Bahlburg, Dominik Bernard, Kim S. Cavan, Emma L. Cox, Martin 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 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 |
Nature Research |
publishDate |
2023 |
url |
http://nora.nerc.ac.uk/id/eprint/535823/ https://www.nature.com/articles/s43017-023-00504-y |
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_relation |
Kawaguchi, So; Atkinson, Angus; Bahlburg, Dominik; Bernard, Kim S.; Cavan, Emma L.; Cox, Martin; Hill, Simeon L. orcid:0000-0003-1441-8769 Meyer, Bettina; Veytia, Devi. 2023 Climate change impacts on Antarctic krill behaviour and population dynamics. Nature Reviews Earth & Environment. 16, pp. https://doi.org/10.1038/s43017-023-00504-y <https://doi.org/10.1038/s43017-023-00504-y> |
_version_ |
1790593827514351616 |