Sahyadris

Sahyadris
Mdmadhu · CC BY-SA 4.0 · source
Name	Western Ghats
Other name	Sahyadris
Country	India
States	Maharashtra, Karnataka, Goa, Kerala, Tamil Nadu
Highest	Anamudi
Elevation m	2695
Length km	1600

Sahyadris The Sahyadris are the mountain chain forming the Western Ghats on the western edge of the Indian Subcontinent, noted for steep escarpments, plateaus, and rich biodiversity. The range spans multiple Indian states including Maharashtra, Karnataka, Goa, Kerala, and Tamil Nadu, and contains prominent peaks such as Anamudi, Dudhsagar Falls, and Kalsubai. The region intersects major rivers like the Narmada River's catchments and feeds tributaries of the Krishna River, Godavari River, and Cauvery River.

Etymology and Naming

The name traces to classical and colonial sources including references by Ptolemy and accounts in the Mahabharata and Ramayana traditions, with later usage by explorers such as Francis Buchanan-Hamilton, James Grant Duff, and William Logan. British cartographers like James Rennell and administrators including Lord Elphinstone and Lord Dalhousie helped standardize nomenclature alongside regional terms used by rulers such as the Chalukya dynasty, Chola dynasty, and Vijayanagara Empire. Modern academic treatments by scholars like Sukumar Periwal, John Warren, and N. K. Singh appear in publications from institutions such as the Indian National Trust for Art and Cultural Heritage and the Archaeological Survey of India.

Geography and Geology

Geologically, the range is a product of the Deccan Traps flood basalt province and tectonic events linked with the breakup of Gondwana and the movement of the Indian Plate against the Eurasian Plate, as described by geologists like Vinod Tiwari and B. B. Lal. Key formations include basalt flows studied at sites near Ratnagiri, Lonavala, Mahabaleshwar, and Matheran, and high-elevation massifs such as Anamudi, Doddabetta, and Mullayanagiri. The escarpment faces the Arabian Sea and abuts coastal plains such as the Konkan and Malabar Coast, while inland plateaus like the Deccan Plateau and river valleys including Tapi River and Netravati River influence topography.

Climate and Hydrology

Monsoon dynamics of the Southwest Monsoon and Northeast Monsoon dominate precipitation patterns, with meteorological data from the India Meteorological Department, researchers like V. Ratnam, and projects by Indian Space Research Organisation quantifying orographic rainfall. The range feeds perennial and seasonal rivers comprising tributaries of the Godavari River, Krishna River, Cauvery River, and Periyar River, and supports reservoirs such as Mulshi Dam, Tungabhadra Dam, Bhavanisagar Dam, and Idukki Dam. Hydrologists from the Central Water Commission and studies led by M. G. Jadhav document groundwater recharge, watershed management, and flash floods at sites like Koyna and Muthanga.

Biodiversity and Ecology

The mountains host UNESCO World Heritage Sites and biodiversity hotspots studied by institutions including the Bombay Natural History Society, Salim Ali Centre for Ornithology and Natural History, Indian Institute of Science, and Tropical Botanical Garden and Research Institute. Endemic flora and fauna include species like Lion-tailed macaque, Nilgiri tahr, Malabar large-spotted civet, Crimson-backed sunbird, Neelakurinji (Strobilanthes kunthiana), and plants recorded by botanists such as Janaki Ammal and T. S. Nayar. Protected areas include Sanjay Gandhi National Park, Periyar National Park, Silent Valley National Park, Bandipur National Park, Nagarhole National Park, and Bhadra Wildlife Sanctuary, while conservationists like Madhav Gadgil, K. K. Udaya Kumar, and Vandana Shiva have influenced policy debates.

Human History and Cultural Significance

Archaeological and historical records connect the range to cultures of the Satavahana dynasty, Chola dynasty, Cheras, Pandyas, Maratha Empire, and colonial actors such as the Portuguese Empire, Dutch East India Company, and British Raj. Trade routes and passes like Thal Ghat, Bhor Ghat, and Palakkad Gap linked ports such as Mumbai, Mangalore, Kochi, and Goa with inland markets, shaping languages and literatures including works by Kuvempu, Thunchaththu Ezhuthachan, Subramania Bharati, and Dnyaneshwar. Religious and cultural sites include Siddheshwar Temple, Murudeshwar Temple, Chamundeshwari Temple, Kazhcha Sree Krishna Temple, and festivals documented by anthropologists like Nandini Sunder and historians like Romila Thapar.

Economy, Land Use, and Conservation

Land use spans plantations of tea, coffee, cardamom, pepper, and rubber managed by companies such as Tata Tea, Harrisons Malayalam, and cooperatives like Kerala Cooperative Milk Marketing Federation alongside smallholder farmers documented by economists like Amartya Sen and Jean Drèze. Mining activities for minerals including laterite and iron ore have involved firms like Tata Steel and led to disputes adjudicated in courts including the Supreme Court of India. Conservation initiatives include the Western Ghats Ecology Expert Panel led by Madhav Gadgil and the High Level Working Group headed by K. Kasturirangan, with NGOs such as WWF-India, Nature Conservation Foundation, Wildlife Conservation Society and community projects promoted by Awaaz Foundation.

Tourism and Recreation

Popular trekking and tourism destinations include Matheran Hill Station, Mahabaleshwar, Lonavala, Coorg (Kodagu), Wayanad, and pilgrim routes to Varkala. Adventure and eco-tourism operators, state tourism boards like Kerala Tourism and Maharashtra Tourism Development Corporation, and guides trained at institutions such as National Adventure Foundation facilitate activities like trekking to Kalsubai, birdwatching in Thattekad Bird Sanctuary, canyoning at Dudhsagar Falls, and wildlife safaris in Bandipur National Park and Periyar National Park.

Category:Mountain ranges of India Category:Western Ghats