Valuation of marine and coastal ecosystem services as a tool for conservation: The case of Martinique in the Caribbean

•Martinique possesses 55 km2 of coral reefs, 50 of sea grass and 20 of mangroves.•These three ecosystems produce services to a value estimated at 250 M €/year (valuation done recently under the French initiative for Coral Reef Conservation, the IFRECOR program). About 60% of this value originates from direct uses such as recreational activities (diving, excursions, beach activities, etc.) through tourism and the fishery.•Ecosystem services (indirect uses) such as coastal protection, carbon sequestration, biomass production and water purification are significant since their sum value reaches 94 M € annually (38% of the total economic value). Non-use value linked to the improvement of the health of coastal ecosystem is estimated to 10 M €/year.•At the ecosystem level, sea grass and mangrove contribute the most (per km2) to wealth creation (respectively 2.16 M €/km2, 1.87 M €/km2 against 1.78 M €/km2 for the reefs).•They need therefore to benefit from protection and management measures in the same magnitude as the reefs already received.•The valuation also shows that, due to policy inaction, the loss of value is about 2.5 M € per year which urges politicians to develop a sound conservation policy.

Martinique possesses 55 km2 of coral reefs, 50 km2 of sea grass and 20 km2 of mangroves. These three ecosystems produce services to a value estimated at 250 million € (M€)/year (valuation recently undertaken under the French initiative for Coral Reef Conservation—the IFRECOR program). It is estimated that around 60% of this value originates from direct uses such as recreational activities (diving, excursions, beach activities, etc.) tourism and fisheries. Ecosystem services (indirect uses) such as coastal protection, carbon sequestration, biomass production and water purification are significant since their total value reaches 94 M€ annually (38% of the total economic value). Non-use values linked to improvements in health of coastal ecosystems is estimated to be 10 M€/year. At the ecosystem level, sea grass and mangrove contribute the most (per km2) to wealth creation (2.16 M €/km2, 1.87 M €/km2 respectively, against 1.78 M €/km2 for coral reefs). They need, therefore, to benefit from protection and management measures in the same magnitude as coral reefs already receive. The valuation also shows that, due to policy inaction, the loss of value is about 2.5 M €/year, which urges politicians to develop a sound conservation policy.