Gulf of Mannar Biosphere Reserve UPSC

• Location: Situated along the southeastern coast of Tamil Nadu, India, stretching across the Gulf of Mannar between India and Sri Lanka; it extends up to the Mannar District of Sri Lanka, forming a biologically rich marine corridor in the Bay of Bengal region.
• History:
  • The Gulf of Mannar has been an important maritime trade route since ancient times.
  • It formed part of early sea trade networks connecting India with Southeast Asia and the Mediterranean.
  • Rameswaram emerged as a major port and pilgrimage center under the Pandya and Chola dynasties.
  • The region is closely associated with the Ramanathaswamy Temple at Rameswaram.
  • European powers including the Portuguese, Dutch, and British established a presence from the 16th century.
• Marine National Park: Declared as the Gulf of Mannar Marine National Park in 1986 by the Government of India, covering a cluster of 21 small islands and their surrounding coral reefs to ensure focused protection of fragile marine ecosystems.
• Designated as Marine Biosphere Reserve (India): Officially designated as a Marine Biosphere Reserve in 1989, with the Marine National Park forming the core zone, while surrounding coastal and marine areas function as buffer and transition zones for sustainable resource use.
• First Marine Biosphere Reserve: Gulf of Mannar Marine Biosphere Reserve is the first Marine Biosphere Reserve in in India and South/South-East Asia.
• UNESCO Recognition: Recognized in 2001 as a UNESCO World Biosphere Reserve under the Man and the Biosphere (MAB) Programme, acknowledging its exceptional marine biodiversity, ecological productivity, and importance for conservation research.
• Ramsar Status: Listed as a Ramsar Wetland of International Importance in 2022, highlighting its global significance as a coastal and marine wetland that supports diverse species, fisheries, and migratory bird populations.
• Area: Covers approximately 10,500 sq. km (around 4,049 square miles), making it India’s largest marine biosphere reserve and one of the most extensive protected marine regions in South Asia.
• Ecosystems: Characterized by a mosaic of coral reefs, seagrass meadows, mangrove forests, mudflats, salt marshes, and sandy beaches, creating interconnected habitats that sustain rich marine and coastal biodiversity.
• Rivers (Inflow): Fed by freshwater inflow from rivers such as the Thamirabarani, Vaigai, and Pamban, which bring nutrients and sediments into the gulf, supporting high biological productivity and sustaining fisheries.
• Plants: Dominated by mangrove species along the coast, extensive seagrass beds that serve as critical feeding grounds for marine herbivores, coastal vegetation adapted to saline conditions, and diverse reef-associated algae.
• Animals: Home to the endangered Dugong (sea cow), various species of dolphins, sea turtles, vibrant coral reef fishes, seabirds, mollusks, crustaceans, and even occasional whale sightings, reflecting its extraordinary marine diversity.
• Famous Places: Includes well-known coastal and island destinations such as Rameswaram Island, Kilakarai, Thoothukudi (Tuticorin), and the Ramanathapuram coastal belt, which are culturally, economically, and ecologically significant to the region.

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