(January 15, 2013) A new study co-authored by the Wildlife Conservation Society assesses the magnitude of the changes and evaluates the causes of reef degradation of the Grand Récif of Toliara which stretches about 19km off south- west Madagascar. It was regarded previously as hav- ing the richest biodiversity system in the Indian Ocean, with more than 6000 species identified in the 1960s, and has been highly degraded since the 1980s. Human population growth and migration, over- fishing,...

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