Unintended consequences of climate‐adaptive fisheries management targets

Author:

Szuwalski Cody S.1ORCID,Hollowed Anne B.1,Holsman Kirstin K.1ORCID,Ianelli James N.1,Legault Christopher M.2,Melnychuk Michael C.3,Ovando Dan3,Punt Andre E.3ORCID

Affiliation:

1. Alaska Fisheries Science Center, NOAA Seattle Washington USA

2. Northeast Fisheries Science Center, NOAA Woods Hole Massachusetts USA

3. School of Aquatic and Fishery Sciences University of Washington Seattle Washington USA

Abstract

AbstractClimate change is projected to affect the productivity of global fisheries. Management based on maximum sustainable yield (MSY) has been effective at eliminating overfishing in many regions. However, continuing to use yield‐maximizing targets under climate‐driven changes in productivity can result in higher anthropogenic pressure on populations subject to climate‐related stress than maintaining status quo management targets. We demonstrate this effect using a theoretical example and case studies from snow crab in the eastern Bering Sea and a global marine fisheries database. In these examples, the conservation gain (i.e. biomass in the ocean) of maintaining status quo management targets is larger than the small gain in harvest made through climate adaptation in MSY‐based management. The aggregate conservation gain of maintaining management targets increases as the harmful impacts of climate change on productivity worsen. Instead of climate‐adaptive MSY‐based targets, new management tools are needed to balance conservation and food production in ecosystems of populations displaying non‐stationary productivity.

Publisher

Wiley

Subject

Management, Monitoring, Policy and Law,Aquatic Science,Ecology, Evolution, Behavior and Systematics,Oceanography

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