Risk maps for Antarctic krill under projected Southern Ocean acidification
Marine ecosystems of the Southern Ocean are particularly vulnerable to ocean acidification. Antarctic krill (Euphausia superba; hereafter krill) is the key pelagic species of the region and its largest fishery resource. There is therefore concern about the combined effects of climate change, ocean a...
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ftunivtasecite:oai:ecite.utas.edu.au:88093 2023-05-15T13:37:23+02:00 Risk maps for Antarctic krill under projected Southern Ocean acidification Kawaguchi, S Ishida, A King, R Raymond, B Waller, N Constable, A Nicol, S Wakita, M Ishimatsu, A 2013 https://doi.org/10.1038/nclimate1937 http://ecite.utas.edu.au/88093 en eng Nature Publishing Group http://dx.doi.org/10.1038/nclimate1937 Kawaguchi, S and Ishida, A and King, R and Raymond, B and Waller, N and Constable, A and Nicol, S and Wakita, M and Ishimatsu, A, Risk maps for Antarctic krill under projected Southern Ocean acidification, Nature Climate Change, 3, (9) pp. 843-847. ISSN 1758-678X (2013) [Refereed Article] http://ecite.utas.edu.au/88093 Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Refereed Article PeerReviewed 2013 ftunivtasecite https://doi.org/10.1038/nclimate1937 2019-12-13T21:51:51Z Marine ecosystems of the Southern Ocean are particularly vulnerable to ocean acidification. Antarctic krill (Euphausia superba; hereafter krill) is the key pelagic species of the region and its largest fishery resource. There is therefore concern about the combined effects of climate change, ocean acidification and an expanding fishery on krill and ultimately, their dependent predators - whales, seals and penguins. However, little is known about the sensitivity of krill to ocean acidification. Juvenile and adult krill are already exposed to variable seawater carbonate chemistry because they occupy a range of habitats and migrate both vertically and horizontally on a daily and seasonal basis. Moreover, krill eggs sink from the surface to hatch at 700-1,000 m (ref.), where the carbon dioxide partial pressure (p CO 2) in sea water is already greater than it is in the atmosphere. Krill eggs sink passively and so cannot avoid these conditions. Here we describe the sensitivity of krill egg hatch rates to increased CO 2, and present a circumpolar risk map of krill hatching success under projected p CO 2 levels. We find that important krill habitats of the Weddell Sea and the Haakon VII Sea to the east are likely to become high-risk areas for krill recruitment within a century. Furthermore, unless CO 2 emissions are mitigated, the Southern Ocean krill population could collapse by 2300 with dire consequences for the entire ecosystem. 2013 Macmillan Publishers Limited. All rights reserved. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Ocean acidification Southern Ocean Weddell Sea eCite UTAS (University of Tasmania) Antarctic Southern Ocean Weddell Weddell Sea Nature Climate Change 3 9 843 847 |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Kawaguchi, S Ishida, A King, R Raymond, B Waller, N Constable, A Nicol, S Wakita, M Ishimatsu, A Risk maps for Antarctic krill under projected Southern Ocean acidification |
topic_facet |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
description |
Marine ecosystems of the Southern Ocean are particularly vulnerable to ocean acidification. Antarctic krill (Euphausia superba; hereafter krill) is the key pelagic species of the region and its largest fishery resource. There is therefore concern about the combined effects of climate change, ocean acidification and an expanding fishery on krill and ultimately, their dependent predators - whales, seals and penguins. However, little is known about the sensitivity of krill to ocean acidification. Juvenile and adult krill are already exposed to variable seawater carbonate chemistry because they occupy a range of habitats and migrate both vertically and horizontally on a daily and seasonal basis. Moreover, krill eggs sink from the surface to hatch at 700-1,000 m (ref.), where the carbon dioxide partial pressure (p CO 2) in sea water is already greater than it is in the atmosphere. Krill eggs sink passively and so cannot avoid these conditions. Here we describe the sensitivity of krill egg hatch rates to increased CO 2, and present a circumpolar risk map of krill hatching success under projected p CO 2 levels. We find that important krill habitats of the Weddell Sea and the Haakon VII Sea to the east are likely to become high-risk areas for krill recruitment within a century. Furthermore, unless CO 2 emissions are mitigated, the Southern Ocean krill population could collapse by 2300 with dire consequences for the entire ecosystem. 2013 Macmillan Publishers Limited. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Kawaguchi, S Ishida, A King, R Raymond, B Waller, N Constable, A Nicol, S Wakita, M Ishimatsu, A |
author_facet |
Kawaguchi, S Ishida, A King, R Raymond, B Waller, N Constable, A Nicol, S Wakita, M Ishimatsu, A |
author_sort |
Kawaguchi, S |
title |
Risk maps for Antarctic krill under projected Southern Ocean acidification |
title_short |
Risk maps for Antarctic krill under projected Southern Ocean acidification |
title_full |
Risk maps for Antarctic krill under projected Southern Ocean acidification |
title_fullStr |
Risk maps for Antarctic krill under projected Southern Ocean acidification |
title_full_unstemmed |
Risk maps for Antarctic krill under projected Southern Ocean acidification |
title_sort |
risk maps for antarctic krill under projected southern ocean acidification |
publisher |
Nature Publishing Group |
publishDate |
2013 |
url |
https://doi.org/10.1038/nclimate1937 http://ecite.utas.edu.au/88093 |
geographic |
Antarctic Southern Ocean Weddell Weddell Sea |
geographic_facet |
Antarctic Southern Ocean Weddell Weddell Sea |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Ocean acidification Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Ocean acidification Southern Ocean Weddell Sea |
op_relation |
http://dx.doi.org/10.1038/nclimate1937 Kawaguchi, S and Ishida, A and King, R and Raymond, B and Waller, N and Constable, A and Nicol, S and Wakita, M and Ishimatsu, A, Risk maps for Antarctic krill under projected Southern Ocean acidification, Nature Climate Change, 3, (9) pp. 843-847. ISSN 1758-678X (2013) [Refereed Article] http://ecite.utas.edu.au/88093 |
op_doi |
https://doi.org/10.1038/nclimate1937 |
container_title |
Nature Climate Change |
container_volume |
3 |
container_issue |
9 |
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843 |
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847 |
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1766091040083673088 |