Abstract

Himalaya occupies an outstanding position, ecologically, economically, socio-culturally and politically. They are one of the rugged territories on the planet, hosting the sky kissing grey peaks and are an abode to the largest fresh water sources in the sub-continent. In India they cover an area of 5 lakh Km² (about 16.2% of country’s total geographical area) and seal the northern boundary of the country. Extended between 26°20' and 35°40' North latitudes and 74°50'and 95°40' East longitudes, they are spread over 10 states (administrative areas) in the country. Over the years biological invasions have increased substantially across world that is causing biotic homogenization, thereby posing a potent threat to the biological diversity and ecological integrity of native habitats and ecosystems. Climate change is likely to favour invasion to new areas, while simultaneously increasing the adaptability in natural communities by disturbing the dynamic equilibrium maintaining them.

Description