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A diverse portfolio of marine protected areas can better advance global conservation and equity
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2024
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Source: Proceedings of the National Academy of Sciences, 121(10)
[PDF-1.22 MB]
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Journal Title:Proceedings of the National Academy of Sciences
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Description:Marine protected areas (MPAs) are widely used for ocean conservation, yet the relative impacts of various types of MPAs are poorly understood. We estimated impacts on fish biomass from no-take and multiple-use (fished) MPAs, employing a rigorous matched counterfactual design with a global dataset of >14,000 surveys in and around 216 MPAs. Both no-take and multiple-use MPAs generated positive conservation outcomes relative to no protection (58.2% and 12.6% fish biomass increases, respectively), with smaller estimated differences between the two MPA types when controlling for additional confounding factors (8.3% increase). Relative performance depended on context and management: no-take MPAs performed better in areas of high human pressure but similar to multiple-use in remote locations. Multiple-use MPA performance was low in high-pressure areas but improved significantly with better management, producing similar outcomes to no-take MPAs when adequately staffed and appropriate use regulations were applied. For priority conservation areas where no-take restrictions are not possible or ethical, our findings show that a portfolio of well-designed and well-managed multiple-use MPAs represents a viable and potentially equitable pathway to advance local and global conservation.
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Source:Proceedings of the National Academy of Sciences, 121(10)
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ISSN:0027-8424;1091-6490;
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Rights Information:CC BY-NC-ND
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Compliance:Library
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