- Objectives
- Examine empirical and theoretical evidence for the potential effects of the “El Corralito” closure on target and key bycatch species.
- Background
- The IATTC has utilized various versions of a spatial closure for tropical tuna by purse-seine vessels within the area of 96º and 110ºW and between 4°N and 3°S and lasting roughly a month since 2009, known broadly as “El Corralito”. The purpose of this project is to examine, through both empirical and theoretical methods, evidence for the impacts of El Corralito on various aspects of catches and populations of target and key non-target species throughout the convention area. Where possible simulation modeling will be used to link empirical findings to broader population dynamics outcomes not directly observable.
- Relevance for management
- This project will provide guidance as to the observed and potential effects of El Corralito within the convention area, based on evidence from historical data as well as simulation modeling. This will help the Commission to determine what role El Corralito will play in future management.
- Duration
- 18 months
- Workplan and status
- Analyze deviations in seasonal catch trends of tropical tunas during periods in which El Corralito was active. Analyze deviations in catch levels of tropical tunas along distance gradients from El Corralito borders during periods in which El Corralito was active. Explore companion analyses for certain key bycatch species. Develop simulation modeling to advice on the potential broader impacts of El Corralito and, likely, alternative spatial management measures.
- Deliverables
- A report for the SAC in 2024 (SAC-15 INF-M)
