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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 Brierly, AS and Driscoll, R and Hill, S and Marschoff, E and Maschette, D and Perry, FA and Reiss, CS and Rombola, E and Kawaguchi, S, and the SCAR Group, Successful ecosystem-based management of Antarctic krill should address uncertainties in krill recruitment, behaviour and ecological adaptation, Commission for the Conservation of Antarctic Marine Living Resources, 16 September (2020) [Refereed Conference Paper]


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Official URL: https://meetings.ccamlr.org/en/sc-camlr-39/bg/24

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 Conference Paper
Keywords:krill, Antarctica, biomass, tempo
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Fisheries sciences
Research Field:Fisheries management
Objective Division:Animal Production and Animal Primary Products
Objective Group:Fisheries - wild caught
Objective Field:Wild caught crustaceans (excl. rock lobster and prawns)
UTAS Author:Maschette, D (Mr Dale Maschette)
ID Code:155017
Year Published:2020
Deposited By:Sustainable Marine Research Collaboration
Deposited On:2023-01-23
Last Modified:2023-01-25
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