Nilgiri Biosphere Reserve UPSC

  • The Nilgiri Biosphere Reserve is located in southern India, covering areas in the states of Tamil Nadu, Kerala, and Karnataka.
  • The reserve includes well-known places like Ooty, Coonoor, Wayanad, and parts of the Nilgiri, Malappuram, and Chamarajanagar districts.
  • In 1882, the Madras Forest Act was enacted to regulate forest use and conservation in the Nilgiri Hills, leading to the establishment of reserved forests and sanctuaries.
  • In 1936, the Nilgiri Wildlife Sanctuary was established to protect the region’s diverse wildlife, including the endangered Nilgiri tahr.
  • In 1986, the Nilgiri Biosphere Reserve was officially designated as India’s first biosphere reserve, aiming to conserve ecosystems, promote sustainable development, and protect cultural heritage.
  • In 2000, the Nilgiri Biosphere Reserve was designated as India’s first biosphere reserve under UNESCO’s Man and the Biosphere Programme.
  • In 2012, the Nilgiri Biosphere Reserve was declared a UNESCO World Heritage Site as part of the Western Ghats, a globally significant biodiversity hotspot.
  • Area: The total area of the reserve is about 5,520 square kilometers (2,131 square miles).
    • Core area: 1,240 sq. km.
    • Buffer zone: 3,574 sq. km.
    • Transition zone: 706 sq. km.
  • Statewise Area: The area distribution among the states is as follows:
    • Tamil Nadu: 2,537.6 sq. km.
    • Kerala: 1,455.4 sq. km.
    • Karnataka: 1,527.4 sq. km.
  • National Parks: Prominent national parks within the reserve:
    • Bandipur National Park (Karnataka)
    • Nagarahole National Park (Karnataka)
    • Mukurthi National Park (Tamil Nadu)
    • Silent Valley National Park (Kerala)
  • Wildlife Sanctuaries: Key wildlife sanctuaries in the reserve:
    • Mudumalai Wildlife Sanctuary (Tamil Nadu)
    • Sathyamangalam Wildlife Sanctuary (Tamil Nadu)
    • Wayanad Wildlife Sanctuary (Kerala)
  • Hills: The Nilgiri Biosphere Reserve is named after the Nilgiri Hills, a key feature of the reserve. These hills are part of the Western Ghats in southern India.
  • Peaks: The highest peak in the Nilgiri Hills is Doddabetta, which rises to 2,637 meters (8,650 feet). Other notable peaks in the region are Mukurthi Peak, Tadiandamol Peak, and Brahmagiri Peak.
  • Rivers: The Nilgiri Biosphere Reserve is a source for several significant rivers, which play a vital role in the region’s water supply and ecological balance. Major rivers originating in the reserve include:
    • Bhavani River
    • Moyar River
    • Kabini River
  • Additionally, smaller rivers and streams such as the Chaliyar and Punampuzha also contribute to the area’s water resources and ecological health.
  • Lakes: The Nilgiri Biosphere Reserve also features several lakes and reservoirs that enhance its ecological diversity. Notable lakes and reservoirs include:
    • Pykara Lake
    • Avalanche Lake
    • Upper Bhavani Lake
    • Emerald Lake
  • Tribes: The Nilgiri Biosphere Reserve is home to several indigenous tribal communities with rich cultural heritage. Notable tribes include:
    • Todas
    • Kotas
    • Irulas
    • Kurumbas
    • Paniyas
    • Cholanaickens
    • Allar
  • Flora: The Nilgiri Biosphere Reserve boasts a rich diversity of flora across its varied ecosystems, including:
    • Shola Forests (Tropical Montane Forests)
    • Evergreen Forests (Indian rosewood, black dammar, and Malabar ironwood)
    • Grasslands (Themeda, Chrysopogon, and Arundinella)
    • Medicinal Plants (Rauvolfia serpentina, Gloriosa superba, and Gymnema sylvestre)
    • Endemic Plants (Nilgiri blue tiger orchid (Vanda nilotica) and various species of Impatiens, Pterocarpus, and Strobilanthes)
    • Wetland Flora (Nelumbo nucifera, Nymphaea spp., and various aquatic grasses and reeds)
  • Fauna: The Nilgiri Biosphere Reserve is renowned for its rich and diverse fauna, thriving in its varied ecosystems such as forests, grasslands, and wetlands.
    • Endemic Species: Nilgiri Tahr, Nilgiri Langur, Nilgiri Pipit, Nilgiri Laughingthrush, Nilgiri Wood-pigeon, Nilgiri Blue Robin, Nilgiri Grasshopper etc.
    • Endangered Species: Nilgiri Tahr, Bengal Tiger, Lion-tailed Macaque, Indian Rock Python, Nilgiri Laughingthrush, Travancore Tortoise.
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