Conservation impacts and hidden actions in a randomized controlled trial of a marine pay-to-release program
Hollie Booth e outros, 2025 · Science Advances
Offering pay-to-release cash incentives to small-scale fishers increased retained hammerhead shark catch by 44% because fishers intensified fishing effort in response to incentives.
Estimativa · % change in retained catch
44,0 [8,00; 92,0]
% change in retained catch
- Desenho
- Experimento aleatório. Preregistered multi-period randomized crossover trial with fishers blocked by village
- População
- Small-scale fishing vessels operating gill nets and longlines in five villages across Aceh Jaya and East Lombok, Indonesia, observed daily between May 2022 and August 2023
- Amostra
- 86 · vessels (261 vessel-period observations over 27,992 observation days)
Onde está o número
RESULTS > Experimental monitoring and evaluation; Results, subsection 'Experimental monitoring and evaluation', paragraph 2
The results show that the pay-to-release program decreased retained wedgefish by an estimated 25% (CI: −49 to 10%) and increased retained hammerhead catch by an estimated 44% (CI: 8 to 92%) (i.e., an increase in mortality; a negative conservation outcome).
Contexto
What changed: Small-scale fishing vessels were offered cash payments conditional on verified video proof of releasing live hammerhead sharks and wedgefish. Comparison: Two-sequence crossover RCT comparing periods with active payments against control periods without payments within the same vessels. Limits: Study covers 86 vessels across five villages in two Indonesian regencies over 16 months; effects depend strongly on species survivability and local gear types.
Caminho no grafo
- FamíliaInstrumentos de mercado e direitos
- TipoPagamento por serviços ambientais
- EixoAcidificação dos oceanos
MAGI só cita evidência deste instrumento
Lugares do estudo
- Patek · Município · ID
- Licença
- CC-BY
- Revisão
- Extraído por máquina, não revisadoExtraído por: gemini-3.8-flash, 2026-10-23