Fire-induced invasion of an endemic plant species alters forest structure and diversity: a study from north-east India.
This study was conducted to determine the status of regeneration of dwarf bamboo (Sinarundinaria rolloana) in relation to other native species following forest fire in Dzukou valley, Nagaland, India, in 2006-08. Results showed that dwarf bamboo recorded the highest importance value index on site 2 followed by site 1. The relative density of dwarf bamboo in the three study sites especially in site 2 indicated that the species grows more vigourously after forest fire contributing to its success in invasion. It is concluded that the biggest threat to the biodiversity of the area is the fire induced invasion by the dwarf bamboo, which is rapidly colonizing and alternating the forest structure and diversity of the Dzukou valley and the surrounding hills. Thus, there is a need to put in place large-scale monitoring of fires and spread of dwarf bamboo to better gauge the spatial and temporal patterns of fire, and the spatial extent of dwarf bamboo.