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

Citation

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, Successful ecosystem-based management of Antarctic krill should address uncertainties in krill recruitment, behaviour and ecological adaptation, Communications Earth & Environment, 1 Article 28. ISSN 2662-4435 (2020) [Refereed Article]


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

DOI: doi:10.1038/s43247-020-00026-1

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 Details

Item Type:Refereed Article
Keywords:Antarctica, krill, recruitment, behaviour, ecological adaptation
Research Division:Environmental Sciences
Research Group:Other environmental sciences
Research Field:Other environmental sciences not elsewhere classified
Objective Division:Environmental Management
Objective Group:Management of Antarctic and Southern Ocean environments
Objective Field:Assessment and management of Antarctic and Southern Ocean ecosystems
UTAS Author:Maschette, D (Mr Dale Maschette)
UTAS Author:Kawaguchi, S (Dr So Kawaguchi)
ID Code:142968
Year Published:2020
Web of Science® Times Cited:3
Deposited By:Ecology and Biodiversity
Deposited On:2021-02-18
Last Modified:2021-05-31
Downloads:0

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