Technical Comments

Response to Comments on "Impacts of Biodiversity Loss on Ocean Ecosystem Services"

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Science  01 Jun 2007:
Vol. 316, Issue 5829, pp. 1285
DOI: 10.1126/science.1138466

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We show that globally declining fisheries catch trends cannot be explained by random processes and are consistent with declining stock abundance trends. Future projections are inherently uncertain but may provide a benchmark against which to assess the effectiveness of conservation measures. Marine reserves and fisheries closures are among those measures and can be equally effective in tropical and temperate areas—but must be combined with catch-, effort-, and gear restrictions to meet global conservation objectives.

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