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Impact of climate change on Antarctic krill


Flores, H and Atkinson, A and Kawaguchi, S and Krafft, BA and Milinevsky, G and Nicol, S and Reiss, C and Tarling, GA and Werner, R and Bravo Rebolledo, E and Cirelli, V and Cuzin-Roudy, J and Fielding, S and Groeneveld, JJ and Haraldsson, M and Lombana, A and Marschoff, E and Meyer, B and Pakhomov, EA and Rombola, E and Schmidt, K and Siegel, V and Teschke, M and Tonkes, H and Toullec, JY and Trathan, PN and Tremblay, N and Van de Putte, AP and van Franeker, JA and Werner, T, Impact of climate change on Antarctic krill, Marine Ecology Progress Series, 458 pp. 1-19. ISSN 0171-8630 (2012) [Refereed Article]

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Copyright Statement

Copyright 2012 Inter-Research

DOI: doi:10.3354/meps09831


Antarctic krill Euphausia superba (hereafter ‘krill’) occur in regions undergoing rapid environmental change, particularly loss of winter sea ice. During recent years, harvesting of krill has increased, possibly enhancing stress on krill and Antarctic ecosystems. Here we review the overall impact of climate change on krill and Antarctic ecosystems, discuss implications for an ecosystem-based fisheries management approach and identify critical knowledge gaps. Sea ice decline, ocean warming and other environmental stressors act in concert to modify the abundance, distribution and life cycle of krill. Although some of these changes can have positive effects on krill, their cumulative impact is most likely negative. Recruitment, driven largely by the winter survival of larval krill, is probably the population parameter most susceptible to climate change. Predicting changes to krill populations is urgent, because they will seriously impact Antarctic eco - systems. Such predictions, however, are complicated by an intense inter-annual variability in recruitment success and krill abundance. To improve the responsiveness of the ecosystem-based management ap - proach adopted by the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR), critical knowledge gaps need to be filled. In addition to a better understanding of the factors influencing recruitment, management will require a better un - derstanding of the resilience and the genetic plasticity of krill life stages, and a quantitative understanding of under-ice and benthic habitat use. Current precautionary management measures of CCAMLR should be maintained until a better understanding of these processes has been achieved.

Item Details

Item Type:Refereed Article
Keywords:krill, Antarctic, Euphausia superba, climate change, sea ice, ocean acidification, UV radiation, fisheries management, CCAMLR, Southern Ocean
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Marine and estuarine ecology (incl. marine ichthyology)
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:Kawaguchi, S (Dr So Kawaguchi)
UTAS Author:Nicol, S (Dr Stephen Nicol)
ID Code:80292
Year Published:2012
Web of Science® Times Cited:208
Deposited By:IMAS Research and Education Centre
Deposited On:2012-10-26
Last Modified:2017-09-06
Downloads:6 View Download Statistics

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