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Catch rate composition affects assessment of protected area impacts
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2021
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Source: Nature Communications, 12(1)
[PDF-447.91 KB]
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Journal Title:Nature Communications
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Description:Lynham et al. assess the impact of marine national monument expansion on catch rates in Hawaii’s longline fishery, finding little, if any negative impact. Another paper, recently published by Chan, also assesses the impact of Papahānaumokuākea Marine National Monument (PMNM) expansion, but finds, for vessels with a history of fishing in PMNM, expansion decreased catch rates by 7% and revenues by 9%. I examine the source of this discrepancy and find catch rate composition to critically affect the underlying trends in data with which models are fit and are likely the source of the conflicting findings. This analysis suggests that aggregate commercial catch rate is a more robust measure of catch per unit effort (CPUE) for Hawaii’s deep-set longline fishery, and I recommend a reanalysis of Lynham et al.’s model using this measure.
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Source:Nature Communications, 12(1)
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ISSN:2041-1723
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Rights Information:CC BY
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Compliance:Library
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