Invasive alien species are plants, animals, pathogens and other organisms that are non-native to an ecosystem, and which may cause economic or environmental harm or adversely affect human health
The spread of invasive plants, especially Senna Spectabilis, is posing a major threat to the Nilgiri forest region, owing to its quick growth and coppicing character
The thick foliage arrests the growth of other indigenous species of trees and grass, and causes food shortage for the wildlife population, especially herbivores, during summer.
Moreover, wildlife would not feed on the leaves of the tree as it was not palatable for them
The plant started to invade in adjacent tiger reserves, including Bandipur and Nagarhole in Karnataka and the Mudumalai tiger reserve in Tamil Nadu
