Correct Option (A)
The Sathyamangalam Tiger Reserve (STR) is strategically located at the confluence of the Eastern and Western Ghats in Tamil Nadu. It functions as a vital ecological corridor, facilitating genetic exchange between wildlife populations in the two mountain ranges. This connectivity is crucial for maintaining biodiversity and the long-term viability of species, particularly large mammals like tigers and elephants, across these significant biogeographic regions. The STR is part of the Nilgiri Biosphere Reserve and links to other protected areas such as Biligiriranga Swamy Temple Wildlife Sanctuary, Mudumalai National Park, and Bandipur National Park.
Incorrect Options:
Nallamala Forest: The Nallamala Forest is situated primarily in the Eastern Ghats, spanning parts of Andhra Pradesh and Telangana. While ecologically significant within the Eastern Ghats, it does not serve as a direct or primary ecological link between the Eastern and Western Ghats due to its geographical position further east.
Nagarhole National Park: Nagarhole National Park (also known as Rajiv Gandhi National Park) is located in Karnataka and is an integral part of the Western Ghats ecosystem. It is connected to other protected areas within the Western Ghats, such as Bandipur National Park, but does not bridge the gap between the Eastern and Western Ghats.
Seshachalam Biosphere Reserve: The Seshachalam Biosphere Reserve is located in the southern Eastern Ghats in Andhra Pradesh. It is known for its unique flora and fauna, including red sanders. However, its geographical location does not position it as a critical ecological link between the Eastern and Western Ghats.