The first marine biosphere reserve in all of South and Southeast Asia is located on the southeastern tip of India in the state of Tamil Nadu, in the Indo-Pacific region. The GOMBR is an international priority site for many reasons – it’s biophysical and ecological uniqueness, economic, social, cultural, scientific importance, national and global significance. The Biosphere reserve extends from Rameswaram Island to Tuticorin in a NE-SW direction to a distance of 140 km. There are 21 islands running almost parallel to the coastline of Gulf of Mannar with three distinct Marine ecosystems namely corals, seagrass and mangroves. The islands in the Gulf of Mannar are classified into 4 major groups - Tuticorin, Mandapam, Keezhakarai and Vembar.
Biodiversity
Around 3,600 species of
fauna and flora have been identified in the Gulf of Mannar area, which
comprises of 3 different ecosystems - Sea grass, Mangrove and Coral Reef
Ecosystem. 17 species of mangrove occur within the reserve and act as an
important nursery of habitats. The shallow waters in the area have the
highest concentration of sea grass species along India’s 7,500 km coastline. 11
species of sea grass recorded in India are found in the reserve. The island’s
surrounding shallow waters harbours 3 species of seagrass that are found
nowhere else in India. These same shallow waters are also known to have at
least 147 species of marine algae
(seaweed)
. These support
complex ecological communities and provide feeding grounds for many species,
including the globally endangered marine animal, dugong. Endangered
species such as whales, dolphins, sea horse and sea snakes are found in these
waters as well.
Productive fringing and
the patchy coral reef surrounding the Park’s islands are comprised of at least
91 species of coral reef systems. The islands are used by 168 migratory bird
species and the sandy shores of most islands provide a nesting habitat for 5
species of marine turtles. This region is also home to over 450 species of
fish, 79 species of crustaceans, 108 species of sponges, 260 species of
mollusks and 100 species of echinoderms.
Krusadai Island, in
Mandapam, exemplifies the biological significance of the Gulf. The fact that
close to 3,600 species of plants and animals are natural inhabitants of the
Gulf of Mannar make it the biologically richest coastal region in India.
See
Causes for concern