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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_2020_Successful_ecosystems_based_CEE_28_CCBY.pdf (2.999Mb)
Date
15/10/2020
Author
Meyer, Bettina
Atkinson, Angus
Bernard, Kim S.
Brierley, Andrew S.
Driscoll, Ryan
Hill, Simeon L.
Marschoff, Enrique
Maschette, Dale
Perry, Frances A.
Reiss, Christian S.
Rombolá, Emilce
Tarling, Geraint A.
Thorpe, Sally E.
Trathan, Philip N.
Zhu, Guoping
Kawaguchi, So
Keywords
Climate sciences
Ecology
Ecosystem ecology
QH301 Biology
SDG 14 - Life Below Water
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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.
Citation
Meyer , B , Atkinson , A , Bernard , K S , Brierley , A S , Driscoll , R , Hill , S L , Marschoff , E , Maschette , D , Perry , F A , Reiss , C S , Rombolá , E , Tarling , G A , Thorpe , S E , Trathan , P N , Zhu , G & 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 , 28 . https://doi.org/10.1038/s43247-020-00026-1
Publication
Communications Earth & Environment
Status
Peer reviewed
DOI
https://doi.org/10.1038/s43247-020-00026-1
ISSN
2662-4435
Type
Journal item
Rights
Copyright © The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
Description
This publication and the scientific position of R.D. was supported by a grant awarded to B.M. from the Federal Ministry of Food and Agriculture (BMEL, Project KrillBIS II, grant number 2819HS001) and contribute to the Helmholtz Research Program “Changing Earth—Sustaining our future” of the research field Earth and Environment of the Helmholtz Association, Topic 6, Suptopic 6.1. G.Z. was supported partly by the National Science Foundation of China (NSFC, grant number 41776185) and the National Key R&D Program of China (NKRDPC, grant number 2018YFC1406801). S.L.H., G.A.T., S.E.T., and P.N.T. were supported by the Natural Environment Research Council (NERC) funding to the Ecosystems programme at the British Antarctic Survey. A.A. was supported by NERC through its ‘Climate Linked Atlantic Sector Science’ (NE/R015953/1). A.A. and S.L.H. received additional support from WWF. S.K. was supported by Australian Antarctic Science Program number 4512.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/21005

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