In India, the Hoolock gibbon, Hoolock hoolock, is found only in a small part in the northeast, south of the Brahmaputra River and east of the Dibang River. The Hoolock gibbon, a canopy dependent species, occurs in some reserve forests of Cachar district of Barak Valley, Assam. but its numbers is declining due to habitat loss and hunting. They are now surviving in some isolated pockets in the re...

Abstract. Although evidence of the hydrological response watersheds to climate change is abundant, reliable assessments water yield (WY) over mountainous regions, such as Upper Brahmaputra River (UBR) basin, remain unclear. Here, we examine long-term WY changes during 1982–2013 in UBR based on multi-station runoff observations. We find that there are significant shifts regimes late 1990s; incre...

our plankton and semi-plankton collections from twelve floodplain lakes (beels) of majuli river island, upper assam reveal 124 rotifer species (32 genera and 17 families); these merit biodiversity value as ~52.0% and ~30.0% of species, ~68.0 and ~45.0% of  genera and ~74.0 and ~65.0% of the families of the phylum known from northeast india (nei) and india, respectively. two species are new to i...