Atlantic Ocean POSEIDON

The EAO-POSEIDON project is an adaptation of the original Eastern Pacific Ocean agent-based bioeconomic model, tailored to the Eastern Atlantic tropical tuna purse‐seine fishery. Building on the EPO framework, it incorporates Atlantic-specific ecological, operational, and regulatory factors such as ICCAT management measures, fleet behavior, and Fish Aggregating Device (FAD) dynamics to simulate vessel decisions (where to fish, FAD use, target species) and evaluate trade-offs between fish stock sustainability (bet, skj, yft) and fleet economics. The initiative was structured following a 2024 call by ICCAT to develop a 1×1° spatial-resolution model and test FAD-limit scenarios under its Tropical Tuna Species Group
A diverse team of stakeholders supports the project, including ICCAT’s SCRS Tropical Tuna Species Group, and researchers adapting the POSEIDON model for the Atlantic context.

Ultimately, POSEIDON–EAO aims to guide ICCAT with science-based evidence for decisions on FAD regulations and other management measures in the Purse Seine Eastern Atlantic tuna fishery.