University Of Tasmania

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

conference contribution
posted on 2023-05-23, 15:40 authored by Meyer, B, Atkinson, A, Bernard, KS, Brierly, AS, Driscoll, R, Hill, S, Marschoff, E, Dale MaschetteDale Maschette, Perry, FA, Reiss, CS, Rombola, E, Kawaguchi, S

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.


Department of Environment and Energy (Cwth)


Publication title

Commission for the Conservation of Antarctic Marine Living Resources




Institute for Marine and Antarctic Studies



Place of publication

Hobart, Tasmania

Event title

Commission for the Conservation of Antarctic Marine Living Resources

Repository Status

  • Restricted

Socio-economic Objectives

Wild caught crustaceans (excl. rock lobster and prawns)

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