Trade-offs between bycatch and target catches in static versus dynamic fishery closures - Université de Montpellier
Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2022

Trade-offs between bycatch and target catches in static versus dynamic fishery closures

Maite Pons
  • Fonction : Auteur
Jordan T. Watson
  • Fonction : Auteur
Daniel Ovando
  • Fonction : Auteur
Sandra Andraka
  • Fonction : Auteur
Stephanie Brodie
  • Fonction : Auteur
Andrés Domingo
  • Fonction : Auteur
Mark Fitchett
  • Fonction : Auteur
Rodrigo Forselledo
  • Fonction : Auteur
Martin Hall
  • Fonction : Auteur
Jason E. Jannot
  • Fonction : Auteur
Miguel Herrera
  • Fonction : Auteur
Sven Kerwath
  • Fonction : Auteur
Jon Lopez
  • Fonction : Auteur
Jon Mcveigh
  • Fonction : Auteur
Lucas Pacheco
  • Fonction : Auteur
Liliana Rendon
  • Fonction : Auteur
Kate Richerson
  • Fonction : Auteur
Rodrigo Sant’ana
  • Fonction : Auteur
Rishi Sharma
  • Fonction : Auteur
James A. Smith
  • Fonction : Auteur
Kayleigh Somers
  • Fonction : Auteur
Ray Hilborn
  • Fonction : Auteur

Résumé

While there have been recent improvements in reducing bycatch in many fisheries, bycatch remains a threat for numerous species around the globe. Static spatial and temporal closures are used in many places as a tool to reduce bycatch. However, their effectiveness in achieving this goal is uncertain, particularly for highly mobile species. We evaluated evidence for the effects of temporal, static, and dynamic area closures on the bycatch and target catch of 15 fisheries around the world. Assuming perfect knowledge of where the catch and bycatch occurs and a closure of 30% of the fishing area, we found that dynamic area closures could reduce bycatch by an average of 57% without sacrificing catch of target species, compared to 16% reductions in bycatch achievable by static closures. The degree of bycatch reduction achievable for a certain quantity of target catch was related to the correlation in space and time between target and bycatch species. If the correlation was high, it was harder to find an area to reduce bycatch without sacrificing catch of target species. If the goal of spatial closures is to reduce bycatch, our results suggest that dynamic management provides substantially better outcomes than classic static marine area closures. The use of dynamic ocean management might be difficult to implement and enforce in many regions. Nevertheless, dynamic approaches will be increasingly valuable as climate change drives species and fisheries into new habitats or extended ranges, altering species-fishery interactions and underscoring the need for more responsive and flexible regulatory mechanisms.
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hal-03589744 , version 1 (02-06-2023)

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Maite Pons, Jordan T. Watson, Daniel Ovando, Sandra Andraka, Stephanie Brodie, et al.. Trade-offs between bycatch and target catches in static versus dynamic fishery closures. Proceedings of the National Academy of Sciences of the United States of America, 2022, 119 (4), ⟨10.1073/pnas.2114508119⟩. ⟨hal-03589744⟩
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