Program(s) in charge: Ecosystem & Bycatch Program
Click to see projects by theme, goal or target:
- To better understand environmental drivers that might be responsible for increasing the vulnerability of non-target species to being caught in EPO fisheries, and devise management measures that may reduce their vulnerability to capture (e.g. space-time closures).
- Each year the IATTC reports catch estimates for non-target species in its Fishery Status Report.
- Nominal catches of bycatch species may not fully explain the magnitude of interannual variability in fishing effort, since environmental factors may drive key processes such as recruitment.
- To improve our understanding of processes affecting catches in the EPO purseseine fishery, we assess ecosystem components including catches of vulnerable shark species in relation to variability in oceanographic conditions and life history characteristics.
- Relevance for management
- Catch prediction models to better manage data-poor species
- 12 months
- Workplan and status
- Jan-Apr 18: exploratory analyses of IATTC observer catch data and oceanographic conditions over the past two decades
- Apr-May 18: present results at the international PICES conference, “Understanding Changes in Transitional Areas of the Pacific” and the 69th Tuna Conference
- Jun-Jul 18: Prepare a manuscript for publication in a scientific journal
- Reporting of bycatch estimates in the Ecosystem Considerations report
- Manuscript that contributes to IATTC’s ecosystem approach through evaluation of potential environmental drivers influencing catches in the EPO purse-seine fishery and relationships between environment and life history characteristics