Which specific ecological characteristic distinguishes the Manas Tiger Reserve in Assam?

The correct answer is It is recognized as a trans-boundary habitat shared with Bhutan. Key Points Manas Tiger Reserve: Located in the state of Assam, the Manas Tiger Reserve is specifically recognized for its ecological significance as a trans-boundary habitat that is shared with the neighboring country of Bhutan. This trans-boundary landscape is critical for seamless wildlife movement, fostering broader ecological balance and genetic exchange across international borders without habitat fragmentation. Evaluation of Incorrect Options: World's only mangrove tiger habitat: This unique characteristic applies to the Sundarbans Tiger Reserve in West Bengal, not Manas. High-altitude stronghold in the Satpura Range: This description strictly refers to the Melghat Tiger Reserve situated in Maharashtra. Spillover habitat for the Ranthambore population: The Dholpur-Karauli Tiger Reserve in Rajasthan serves this specific purpose. Additional Information Scale and Size: Manas Tiger Reserve stands as the second largest tiger reserve in India by total area (combining core and buffer zones), encompassing a vast 2,837.10 sq. km. Historical Significance: It laid the foundation for India's conservation success as one of the original 9 tiger reserves notified when Project Tiger was officially launched on April 1, 1973. Regional Network: Assam hosts a total of 4 tiger reserves in the country's network, which include Manas, Nameri, Kaziranga, and Orang. Important Points The largest tiger reserves by total area in India are Nagarjunsagar-Srisailam (3,296.31 sq. km) at the top, followed consecutively by Manas (2,837.10 sq. km) and Guru Ghasidas-Tamor Pingla (2,829.38 sq. km). Tiger Reserves established under the Wildlife (Protection) Act of 1972 prioritize comprehensive biodiversity conservation, ensuring the safety of a wide array of flora and fauna beyond just the targeted feline species.