Biodiversité

Version abrégée de la publication phare de la FAO, La situation mondiale des pêches et de l’aquaculture 2022, cette brochure contient les principaux messages et le contenu de la publication et est destiné aux médias, aux responsables politiques et au grand public.

Lire en ligne le rapport digital complet

Lire l'histoire interactive

Lire le rapport complet

Tropical coral reefs are subject to multiple pressures from both natural and anthropogenic sources. These pressures have caused widespread declines in reef health, resulting in the increased use of spatial management tools such as marine protected areas (MPAs). MPAs have proven generally effective if well designed and enforced, but there are limited long-term studies investigating how the presence of small-scale MPAs affects fish populations and reef communities. Using a 12-year time series, we found that small-scale (10–50 ha) community-managed MPAs along the Danajon Bank of the Philippines preserved average fish biomass within their boundaries over time relative to surrounding fished reefs. Unprotected areas are, however, showing significant long-term biomass decline. MPAs were also found to preserve more key trophic groups and larger-bodied commercially targeted reef fish families.