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LSU researchers challenge analyses on sustainability of Gulf fisheries
Date:2/18/2008

BATON ROUGE Louisianas coastal fisheries produce approximately 25 percent of the total catch by weight in the lower 48 states (www.americaswetland.com). With such a substantial portion of the nations economy dependant on the state of these waters particularly the Gulf of Mexico region it comes as no surprise that these fisheries are heavily monitored and scrutinized by researchers across the globe. While some recent studies claim that the ecosystem is near collapse, researchers from LSU and the University of Washington say that fish populations in this area have actually fluctuated very little in the past 50 years.

James Cowan, professor in LSUs Department of Oceanography and Coastal Sciences, along with first author Kim DeMutsert, an LSU graduate student in Cowans research group, recently published a study in the Proceedings of the National Academy of Sciences of the United States of America, or PNAS, taking issue with these articles. Their research was funded by the Louisiana Department of Wildlife and Fisheries with Sport Fish Restoration dollars provided through the U.S. Fish and Wildlife Federal Assistance Program.

There is concern among the fisheries science community that some high profile papers in top-tier journals are promoting advocacy at the expense of defensible science, said Cowan. More importantly, there is risk that continually crying wolf will eventually numb people to real threats against sustainable use of important natural resources such as wild fisheries.

Because of the potential impact such a collapse would have on the country, it inevitably made big news when not one but two high-publicity articles were published in recent years claiming that the fisheries ecosystem in the Gulf of Mexico were on the brink of disaster.

The first article, by Maria Palomares and Daniel Pauly, implies that food webs and fisheries ecosystems in the Gulf of Mexico and Atlantic south of Ches
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Contact: James Cowan
jhcowan@lsu.edu
225-892-9405
Louisiana State University
Source:Eurekalert

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