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Proc Natl Acad Sci U S A. 2016 May 3;113(18):5125-9. doi: 10.1073/pnas.1520420113. Epub 2016 Mar 28.

Global fishery prospects under contrasting management regimes.

Author information

1
Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106; costello@bren.ucsb.edu.
2
Bren School of Environmental Science and Management, University of California, Santa Barbara, CA 93106;
3
Environmental Defense Fund, New York, NY 10010;
4
School of Aquatic and Fishery Sciences, University of Washington, Seattle, WA 98195.

Abstract

Data from 4,713 fisheries worldwide, representing 78% of global reported fish catch, are analyzed to estimate the status, trends, and benefits of alternative approaches to recovering depleted fisheries. For each fishery, we estimate current biological status and forecast the impacts of contrasting management regimes on catch, profit, and biomass of fish in the sea. We estimate unique recovery targets and trajectories for each fishery, calculate the year-by-year effects of alternative recovery approaches, and model how alternative institutional reforms affect recovery outcomes. Current status is highly heterogeneous-the median fishery is in poor health (overfished, with further overfishing occurring), although 32% of fisheries are in good biological, although not necessarily economic, condition. Our business-as-usual scenario projects further divergence and continued collapse for many of the world's fisheries. Applying sound management reforms to global fisheries in our dataset could generate annual increases exceeding 16 million metric tons (MMT) in catch, $53 billion in profit, and 619 MMT in biomass relative to business as usual. We also find that, with appropriate reforms, recovery can happen quickly, with the median fishery taking under 10 y to reach recovery targets. Our results show that commonsense reforms to fishery management would dramatically improve overall fish abundance while increasing food security and profits.

KEYWORDS:

bioeconomic model; fishery recovery; fishery reform; rights-based fishery management

Comment in

PMID:
27035953
PMCID:
PMC4983844
DOI:
10.1073/pnas.1520420113
[Indexed for MEDLINE]
Free PMC Article

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