About
General Objetive
DiadSea aims to foster transnational cooperation in the Atlantic Area (AA), to enhance the sustainable management and conservation of diadromous fishes (DF) in marine habitat. It aims to i) Identify and fill knowledge gaps in DF marine habitat; ii) Anticipate the distribution range shifts of DF due to climate and oceanographic changes; iii) Develop innovative cooperative solutions to protect biodiversity and the natural resources of DF in marine habitat and, subsequently, in freshwater habitat.
Why is DiadSea important?
Marine ecosystems are losing biodiversity due to human impact and climate change. Diadromous fish (DF), which migrate between fresh and marine waters, provide key ecosystem services and are vital to local communities. However, DF face many human-driven threats, especially in their little-understood marine phase. Current local management is insufficient. A transnational, cooperative approach is needed to conserve DF, ensure connectivity, and address shared threats across their Atlantic range.
Main Outputs
Three main outputs will be produced to increase the capacity of policy makers and other key stakeholders to make efficient and informed management decisions in the implementation of related policies on diadromous fishes while considering the impacts of climate change:
- updated Interactive Web Atlas, will present changes in diadromous fish distributions under climate change, providing support to regulatory bodies in various countries as a tool to better manage and protect vulnerable stocks.
- Transnational Observatory, where elected national representatives will gather and discuss DF management from an international point of view, sharing ideas and best practices, with the aim to improve DF management.
- Tools for capacitation and capitalization will fosters long-term conservation of DF through a collaborative capitalization strategy, transforming knowledge into tangible actions — like a label of origin and educational tools — to raise awareness, engage stakeholders, and promote sustainable practices.

Lead partner (dark blue), beneficiary partners (dark green) e associated partners (light green)