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Study finds high mortality of endangered loggerhead sea turtles in Baja California
Date:10/14/2008

SANTA CRUZ, CA--Along the southern coast of Baja California, Mexico, scientists have been counting the carcasses of endangered sea turtles for a decade as part of an effort to assess and eliminate threats to loggerhead sea turtle populations. Their findings, published this week, are shocking: almost 3,000 sea turtles were found dead along a 27-mile stretch of coast during a five-year period from 2003 to 2007.

Led by Hoyt Peckham, a graduate student at the University of California, Santa Cruz, the study underscores the enormous impact of bycatch (marine life accidentally killed by fishing operations) on sea turtles. Bycatch and, to a lesser degree, poaching are both significant threats to the survival of the endangered Pacific loggerhead sea turtle population, Peckham said.

"We saw what are apparently the highest documented stranding and fisheries bycatch rates in the world," he said. "But the high bycatch rates offer us all an unexpected conservation opportunity. By working with just a handful of fishermen to diminish their bycatch, we can save hundreds of turtles."

Peckham and his coauthors, whose findings appear in a special bycatch issue of Endangered Species Research, are working to increase awareness of the problems facing sea turtles in Baja California Sur. They hope this report will encourage Mexico's government agencies to finalize creation of a refuge that protects turtles and encourages sustainable fishing in the area.

"We have counted so many dead turtles. We have piles of data on thousands of carcasses. What we need now are conservation actions and viable solutions," said Wallace J. Nichols, research associate with the California Academy of Sciences and a coauthor of the paper.

The authors partnered with local fishermen not only to assess bycatch but also to increase awareness of its far-reaching effects and work toward ending the threat.

"Once they are aware of the ocean-wide impacts
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Contact: Tim Stephens
stephens@ucsc.edu
831-459-2495
University of California - Santa Cruz
Source:Eurekalert

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