Coastal eutrophication is one of the greatest threats to the health of coastal social-ecological systems (SES) worldwide. Despite long-term efforts, few eutrophic systems are now in recovery. GreenSeas aims to address this persistent sustainability problem, recognized as a “wicked” problem by building on the complex multi-site case of Brittany (France), one of the most severely affected coastal areas in Europe. The general objective is to investigate past and current adaptation of vulnerable coastal systems exposed to long-lasting eutrophication, and possible transformative pathways towards more sustainable and equitable futures. We will develop a transdisciplinary approach along the land-sea continuum, mixing interdisciplinary sciences (agronomy, ecology, biogeochemistry, social anthropology, environmental history, political science, and economics) and stakeholder expertise. The project will provide an integrated understanding of the SES adaptation dynamics, and the social and political changes affecting coastal areas at different organizational levels, towards sustainable management of these areas. It will identify conditions under which confronting long-standing environmental issues can lead to rapid transition towards sustainable SES, and contribute to co-designing appropriate eutrophication management strategies and public policies.
