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Reply to: Shark mortality cannot be assessed by fishery overlap alone
[...]we account for selectivity by focusing our fisheries-independent spatial estimates directly on individuals that were actually caught by the focal fisheries. [...]the commercially valuable sharks that we tracked are seldom discarded by major high-seas longlining fleets8, indicating that an impli...
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Published in: | Nature (London) 2021-07, Vol.595 (7866), p.E8-2 |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article |
Language: | English |
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Online Access: | Get full text |
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Summary: | [...]we account for selectivity by focusing our fisheries-independent spatial estimates directly on individuals that were actually caught by the focal fisheries. [...]the commercially valuable sharks that we tracked are seldom discarded by major high-seas longlining fleets8, indicating that an implicit assumption of a fishing mortality probability of one does not substantially overestimate the mortality that occurs. Regarding FEI being related to fishing-induced shark mortality, we stated1 that the significant positive relationship between Food and Agriculture Organization (FAO) fishery landings data and individual-species mean FEI "implies that the index reflects fishing-induced shark mortality". [...]we disagree that our analyses do not support our conclusion of limited spatial refuge for pelagic sharks from current levels of fishing effort in Areas Beyond National Jurisdictions (ABNJs). |
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ISSN: | 0028-0836 1476-4687 |
DOI: | 10.1038/s41586-021-03396-4 |