Indra D Bhatt1, Sandeep Rawat2, Amit Badhani2, Ranbeer S Rawal2. 1. G. B. Pant National Institute of Himalayan Environment and Sustainable Development, Kosi-Katarmal, Almora 263 643, Uttarakhand, India. Electronic address: id_bhatt@yahoo.com. 2. G. B. Pant National Institute of Himalayan Environment and Sustainable Development, Kosi-Katarmal, Almora 263 643, Uttarakhand, India.