The grasslands in the floodplains of North East India are known for its faunal diversity with special reference to its megaherbivores. This ecosystemis presently under threat with the invasion of various plant species. We studied current status of invasiveplant species in dry savanna grassland of Rajiv Gandhi Orang National Park, Assam. Four invasive plants species have beenrecorded from the study area viz. Ageratum conyzoides (L.), Chromolaena odorata (L.) R. M. King H. Rob., Mikania micranthaKunth, and Mimosa diplotricha Sauvalle. Among the invasive plants, Chromolaena had the highest density (261 individuals ha )-1and IVI (7.88) followed by that of Mikania and Mimosa. Chromolaena was the most frequent species, while Ageratum was theleast recorded plant. The status assessment of invasive plant species in this very important protected grassland ecosystem in NorthEast India will be helpful in making a sound management protocol for the invasive plant species.
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