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Successful ecosystem-based management of Antarctic krill should address uncertainties in krill recruitment, behaviour and ecological adaptation

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Meyer, B, Atkinson, A, Bernard, KS, Brierley, AS, Driscoll, R, Hill, SL, Marschoff, E, Maschette, D ORCID: 0000-0003-2590-8544, Perry, FA, Reiss, CS, Rombola, E, Tarling, GA, Thorpe, SE, Trathan, PN, Zhu, G and Kawaguchi, S 2020 , 'Successful ecosystem-based management of Antarctic krill should address uncertainties in krill recruitment, behaviour and ecological adaptation' , Communications Earth & Environment, vol. 1 , pp. 1-12 , doi: 10.1038/s43247-020-00026-1.

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Abstract

Antarctic krill, Euphausia superba, supports a valuable commercial fishery in the Southwest Atlantic, which holds the highest krill densities and is warming rapidly. The krill catch is increasing, is concentrated in a small area, and has shifted seasonally from summer to autumn/winter. The fishery is managed by the Commission for the Conservation of Antarctic Marine Living Resources, with the main goal of safeguarding the large populations of krill-dependent predators. Here we show that, because of the restricted distribution of successfully spawning krill and high inter-annual variability in their biomass, the risk of direct fishery impacts on the krill stock itself might be higher than previously thought. We show how management benefits could be achieved by incorporating uncertainty surrounding key aspects of krill ecology into management decisions, and how knowledge can be improved in these key areas. This improved information may be supplied, in part, by the fishery itself.

Item Type: Article
Authors/Creators:Meyer, B and Atkinson, A and Bernard, KS and Brierley, AS and Driscoll, R and Hill, SL and Marschoff, E and Maschette, D and Perry, FA and Reiss, CS and Rombola, E and Tarling, GA and Thorpe, SE and Trathan, PN and Zhu, G and Kawaguchi, S
Keywords: Antarctica, krill, recruitment, behaviour, ecological adaptation
Journal or Publication Title: Communications Earth & Environment
Publisher: Nature Publishing Group
ISSN: 2662-4435
DOI / ID Number: 10.1038/s43247-020-00026-1
Copyright Information:

Copyright 2020 the authors. Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

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