Applying a New Ensemble Approach to Estimating Stock Status of Marine Fisheries Around the World

Last modified: 
December 16, 2019 - 12:54pm
Type: Journal Article
Year of publication: 2017
Date published: 03/2017
Authors: Andrew Rosenberg, Kristin Kleisner, Jamie Afflerbach, Sean Anderson, Mark Dickey-Collas, Andrew Cooper, Michael Fogarty, Elizabeth Fulton, Nicolas Gutiérrez, Kimberly Hyde, Ernesto Jardim, Olaf Jensen, Trond Kristiansen, Catherine Longo, Carolina Minte-Vera, Cóilín Minto, Iago Mosqueira, Giacomo Osio, Daniel Ovando, Elizabeth Selig, James Thorson, Jessica Walsh, Yimin Ye
Journal title: Conservation Letters

The exploitation status of marine fisheries stocks worldwide is of critical importance for food security, ecosystem conservation, and fishery sustainability. Applying a suite of data-limited methods to global catch data, combined through an ensemble modeling approach, we provide quantitative estimates of exploitation status for 785 fish stocks. Fifty six percent (439 stocks) are below BMSY and of these, 261 are estimated to be below 80% of the BMSYlevel. While the 178 stocks above 80% of BMSY are conventionally considered “fully exploited”, stocks staying at this level for many years, forego substantial yield. Our results enable managers to consider more detailed information than simply a categorization of stocks as “fully” or “over” exploited. Our approach is reproducible, allows consistent application to a broad range of stocks, and can be easily updated as new data become available. Applied on an ongoing basis, this approach can provide critical, more detailed information for resource management for more exploited fish stocks than currently available.

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