Washington, Jan 1: Mangrove trees, which are highly sensitive to cold, have expanded enormously on the Atlantic coast of Florida as the frequency of frosts has diminished, says a study. The analysis of satellite data compiled over 28 years by the University of Maryland and the Smithsonian Environmental Research Center showed that during 1984-2011 the Florida coast, from Miami northwards, has gained more than 1,240 hectares of mangroves. The study was published in the Proceedings of the National Academy of Sciences. Mangroves form a biomass of trees that tolerate salt in tidal areas near freshwater estuaries on tropical near freshwater .

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