Classification, Distribution, Features, Biodiversity and Functions of Wetlands: A Review

Wetlands include a wide variety of habitats such as marshes, peatlands, floodplains, rivers and lakes coastal areas salt mangroves seagrass beds, but also coral reefs other marine no deeper than 6 m at low tide, well human-made wetlands paddy lands, waste-water treatment ponds reservoirs. According to Ramsar convention the are classified three types viz., coastal/marine wetlands, inland human made wetlands. UNCC, estimated wetland cover world is more 1210 Million hectares in that 13-18% on List International Importance, which protected sites. In India 49 major sites) recognized sites international importance. has ecosystem support diverse unique because climatic condition it one amongst 17 mega countries. Total area Tamil Nadu 9.02 lakh ha 6.92% geographic out them Kancheepuram district having highest total about 8.91%.