Zeitschrift für Küstenzonenmanagement

Abstrakt

Marine biodiversity in India with special reference to conservation, status and issues

Sainudeen Sahib

India has a vast coastline of 8000 km, of which 5,423 km belong to Peninsular India and 2,094 km to the Andaman and Nicobar and Lakshadweep Islands and with an EEZ of 2.02 million sq. km. There are about 13,000 recorded marine species in India. Indian coastal zones have a variety of habitats like mangrove, estuarine, coral reefs, sea grass beds, lagoons, sand dunes, rocky shore, cliffs, intertidal mud flats, etc. Coastline of India has also supports nearly 250 million people and the ecological services of marine and coastal ecosystems of India play a vital role in India’s economy growth. The marine floral diversity includes 844 species of marine alga (sea weeds) belonging to 217 genera, 14 species of sea grasses and 69 species of mangroves. The marine faunal diversity includes a wide variety of life forum. The Indian coastal water harbors 451 species of sponges, more than 200 species of corals, more than 2900 species of crustacean, 3370 species of marine molluscs, more than 200 species of bryozoans, 765 species of echinoderm, 47 species of tunicates, more than 1300 marine fishes, 26 species of sea snakes, 5 species of sea turtles and 30 species of marine mammals including dugong, dolphins, whales, etc. In addition, a wide variety of sea birds can be observed around the coast. There are ten species of sharks and rays including whale shark, all species of sea horses, all cetaceans, dugong, nine species of shells, five species of sea turtles, one species of otter, all species of corals, all species of sponges and all holothurians that occur in coastal and marine areas of India are considered under threat, therefore, protected under the Wildlife (Protection) Act, 1972 by listing them in the Schedule. Major anthropogenic direct drivers of ecosystem degradation and destruction include habitat conversion to other forms of land use, overexploitation of species and associated destructive harvesting practices, spread of invasive alien species, and the impacts of pollution from agricultural, domestic and industrial effluents. In this paper, the major issues related to coastal and marine biodiversity conservation and measures taken to address them have been highlighted.