Big fish return to Mexican marine park

Most effects of overharvesting reversed within a decade

By Janet Raloff, 12:46 PM August 12, 2011

Within 14 years of a national marine park in Mexico’s Gulf of California closing its borders to fishing, the total mass of its denizens more than quintupled, a new study finds. Over the same period, the share of top predators — sentinels of a healthy ecosystem — also soared. Both trends countered those for fish in unprotected regions of the Gulf.

“People who object to marine protected areas, especially to strong protection like here, often say there is no proof that they work,” says Elliott...

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