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| Main Authors: | , , , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Science advances
2025
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/40267207/ |
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Table of Contents:
- Conservation impacts and hidden actions in a randomized controlled trial of a marine pay-to-release program. Booth, Hollie Pienkowski, Thomas Ramdlan, M Said Naira, Kusuma Banda Muhsin Milner-Gulland, E J Adrianto, Luky Ferraro, Paul J Animals Biodiversity Conservation of Natural Resources Endangered Species Fisheries Indonesia Sharks Incentive payments could cost-effectively and equitably achieve biodiversity conservation goals but could also trigger unintended countervailing actions. Here, we report on a preregistered, randomized controlled trial of a pay-to-release program among small-scale, Indonesian fishing vessels for the release of two critically endangered marine taxa from fishing gear: hammerhead sharks and wedgefish. A conventional monitoring approach, which quantifies impacts based on conservation-relevant actions (i.e., numbers of live releases), implies that the program was successful: a 71 and 4% reduction in wedgefish and hammerhead shark mortality, respectively. The experimental data, however, imply that the pay-to-release program also induced some vessels to increase their catch, thereby decreasing wedgefish mortality by only 25% [confidence interval (CI): -49 to 10%] and increasing hammerhead mortality by 44% (CI: 8 to 92%). Our results do not imply that pay-to-release programs cannot work but rather demonstrate the complexity of designing incentive-based conservation programs and the importance of piloting them using experimental designs before scaling up.