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Circumpolar projections of Antarctic krill growth potential


Veytia, D and Corney, S and Meiners, KM and Kawaguchi, S and Murphy, EJ and Bestley, S, Circumpolar projections of Antarctic krill growth potential, Nature Climate Change, 10, (6) pp. 568-575. ISSN 1758-678X (2020) [Refereed Article]

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Copyright 2020 the authors

DOI: doi:10.1038/s41558-020-0758-4


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 Details

Item Type:Refereed Article
Keywords:Antarctic krill, Southern Ocean, climate change, biological oceanography, Antarctic ecosystems, global change biology
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and estuarine ecology (incl. marine ichthyology)
Objective Division:Environmental Management
Objective Group:Management of Antarctic and Southern Ocean environments
Objective Field:Biodiversity in Antarctic and Southern Ocean environments
UTAS Author:Veytia, D (Ms Devi Veytia)
UTAS Author:Corney, S (Dr Stuart Corney)
UTAS Author:Meiners, KM (Dr Klaus Meiners)
UTAS Author:Kawaguchi, S (Dr So Kawaguchi)
UTAS Author:Bestley, S (Dr Sophie Bestley)
ID Code:139019
Year Published:2020
Funding Support:Australian Research Council (DE180100828)
Web of Science® Times Cited:1
Deposited By:Ecology and Biodiversity
Deposited On:2020-05-21
Last Modified:2020-12-22
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