With Reef Ecosystems, It May Be All or Nothing

There might just be something to the idea of marine reserves, a recent survey of the Mediterranean Sea suggests. Getty Images Fishing in the Mediterranean. Scientists led by Enric Sala , a National Geographic explorer-in-residence and a marine ecologist with the Center for Advanced Studies of Blanes in Spain, studied rocky reefs around Mediterranean shores , comparing places that ranged from strictly enforced “no-take” marine protected areas to open-access sites accorded no protection at all. The results, they said, showed a “remarkable variation in the structure of rocky reef ecosystems,” with three distinct groups: reefs with large fish biomass and algae, the healthiest sites; sites with fewer fish, though with an abundance of algae; and reefs with both few fish and “extensive barrens.” They concluded that the only significant variables correlating to the state of life o...

Full article: http://green.blogs.nytimes.com/2012/03/04/with-reef-ecosy...

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