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Circumpolar projections of Antarctic krill growth potential

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Veytia, D, Corney, S ORCID: 0000-0002-8293-0863, Meiners, KM, Kawaguchi, S, Murphy, EJ and Bestley, S ORCID: 0000-0001-9342-669X 2020 , 'Circumpolar projections of Antarctic krill growth potential' , Nature Climate Change , pp. 1-19 , doi: 10.1038/s41558-020-0758-4.

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Abstract

Antarctic krill is a key species of important Southern Ocean food webs, yet how changes in ocean temperature and primary production may impact their habitat quality remains poorly understood. We provide a circumpolar assessment of the robustness of krill growth habitat to climate change by coupling an empirical krill growth model with projections from a weighted subset of IPCC Earth system models. We find that 85% of the study area experienced only a moderate change in relative gross growth potential (± 20%) by 2100. However, a temporal shift in seasonal timings of habitat quality may cause disjunctions between krill’s biological timings and the future environment. Regions likely to experience habitat quality decline or retreat are concentrated near the northern limits of krill distribution and in the Amundsen–Bellingshausen seas region during autumn, meaning habitat will likely shift to higher latitudes in these areas.

Item Type: Article
Authors/Creators:Veytia, D and Corney, S and Meiners, KM and Kawaguchi, S and Murphy, EJ and Bestley, S
Keywords: Antarctic krill, Southern Ocean, climate change, biological oceanography, Antarctic ecosystems, global change biology
Journal or Publication Title: Nature Climate Change
Publisher: Nature Publishing Group
ISSN: 1758-678X
DOI / ID Number: 10.1038/s41558-020-0758-4
Copyright Information:

Copyright 2020 the authors

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