e360 digest
14 Oct 2009:
Salt Marshes and Mangroves
Cited as Vital in Combating Climate Change
Salt marshes, sea grasses, mangroves, and other forms of marine vegetation withdraw and store an enormous amount of carbon dioxide from the atmosphere and should be preserved and restored by creating a new global fund, according to a U.N. report. The study, calling for the creation of a “Blue Carbon” initiative, said that although such marine vegetation covers less than 1 percent of the world’s seabed, these plants are estimated to store 1.6 billion tons of CO2 every year — more than half of all carbon buried in the ocean floor. The U.N. report said that these vital marine habitats are being destroyed at a rapid rate, with parts of Asia losing up to 90 percent of their mangrove forests since 1940 and an estimated 2 to 7 percent of salt marshes, sea grasses, and mangroves lost annually to human development. But the report said that such ecosystems can be restored, and that the restoration of large areas of marine vegetation, coupled with efforts to preserve tropical forests, could reduce global carbon emissions by 25 percent.
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