Saturday, July 4, 2009

ecology

Ecology
A view of the Caribbean Sea from the Dominican Republic coast

The Caribbean is home to about 9% of the world's coral reefs covering about 20,000 square miles (52,000 km2), most of which are located off the Caribbean Islands and the Central American coast.[4] Currently, unusually warm Caribbean waters are endangering the Caribbean coral reefs. Coral Reefs support some of the most diverse habitats in the world, but are fragile ecosystems. When tropical waters exceed 85 °F (29 °C) for an extended period of time, microscopic plants called zooxanthellae die off. These plants provide food for the coral and give them their color. The resultant bleaching of the coral reefs kills them, and ruins the ecosystem. Up to 42% of the coral colonies have gone completely white, while 95% have undergone at least some bleaching.[5] The habitats supported by the reefs are critical to such tourist activities as fishing and diving, and provide an annual economic value to Caribbean nations of $3.1-$4.6 billion. Continued destruction of the reefs could severely damage the region's economy.[6] A Protocol of the Convention for the Protection and Development of the Marine Environment of the Wider Caribbean Region came in effect in 1986 to protect the various endangered marine life of the Caribbean through forbidding human activities that would advance the continued destruction of such marine life in various areas. Currently this protocol has been ratified by 15 countries.[7] Also several charitable organizations have been formed to preserve the Caribbean marine life, such as Caribbean Conservation Corporation which seeks to study and protect sea turtles while educating others about them.[8]

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