Western Ghats Biodiversity: Origins, Threats, and Conservation Efforts
The Western Ghats, a global biodiversity hotspot, faces significant threats. Understanding its unique origins and ongoing conservation efforts is crucial for its survival.
Source: GNews India EnvironmentThe Western Ghats, a mountain range running parallel to the western coast of the Indian peninsula, is recognized as one of the world's eight 'hottest hotspots' of biological diversity. This region is older than the Himalayan mountains and has a unique geological history, contributing to its rich and endemic flora and fauna. It is home to at least 325 globally threatened species. Major threats to the Western Ghats' biodiversity include habitat loss due to deforestation, fragmentation from infrastructure projects, climate change, invasive species, and pollution. Conservation efforts in the Western Ghats involve establishing protected areas like national parks and wildlife sanctuaries, implementing sustainable land use practices, and promoting community participation. The region's ecological significance is immense, providing water resources, regulating climate, and supporting livelihoods for millions.
The Western Ghats is a critical topic for competitive exams, especially UPSC GS Paper I (Geography) and GS Paper III (Environment & Ecology), and SSC General Awareness. Aspirants should focus on its status as a biodiversity hotspot, endemic species, major threats, and key conservation initiatives. Questions often relate to its geographical extent, ecological services, and the committees formed for its protection.
- The Western Ghats is one of the world's eight 'hottest hotspots' of biological diversity.
- It spans six Indian states: Gujarat, Maharashtra, Goa, Karnataka, Kerala, and Tamil Nadu.
- The mountain range is approximately 1,600 kilometers long.
- It is home to at least 325 globally threatened species.
- The average elevation of the Western Ghats is around 1,200 meters.
- Around 30% of India's plant species are found in the Western Ghats.
A biodiversity hotspot is a biogeographic region with a significant reservoir of biodiversity that is under threat from humans. To qualify, an area must contain at least 1,500 species of vascular plants as endemics and have lost at least 70% of its primary vegetation. The Western Ghats meets both criteria.
An endemic species is a species that is unique to a defined geographic location, such as an island, nation, or other defined zone, and is not found naturally anywhere else in the world. The Western Ghats has a high degree of endemism, especially among amphibians and reptiles.
Habitat fragmentation is the process by which large, continuous habitats are divided into smaller, isolated patches. This often occurs due to human activities like road construction, agriculture, and urbanization. It can lead to reduced biodiversity and increased extinction risk for species.
UPSC often asks about the geographical extent, ecological significance, and conservation status of the Western Ghats. Be prepared for questions on specific committees like Gadgil and Kasturirangan reports, and the types of forests found there.
Remember '6 States, 325 Threats, 1 Hotspot' for Western Ghats: 6 states it covers, 325 threatened species, and its status as a biodiversity hotspot.
Frequently Asked Questions
What are the main threats to biodiversity in the Western Ghats?
The main threats to biodiversity in the Western Ghats include habitat loss and fragmentation due to deforestation and infrastructure projects, climate change impacts, spread of invasive alien species, and pollution from agriculture and industries. Poaching also poses a threat to wildlife.
Which Indian states are covered by the Western Ghats?
The Western Ghats mountain range extends across six Indian states. These states are Gujarat, Maharashtra, Goa, Karnataka, Kerala, and Tamil Nadu. It forms a continuous chain along the western edge of the Deccan Plateau.
Why is the Western Ghats considered a biodiversity hotspot?
The Western Ghats is considered a biodiversity hotspot because it harbors an exceptionally high number of endemic species, particularly plants, amphibians, and reptiles, and has experienced significant habitat loss. It meets the criteria of having over 1,500 endemic plant species and losing more than 70% of its original habitat.