Popis: |
This chapter describes floristic changes, particularly in the herbaceous flora, that have occurred during recent years due to the introduction and spread of alien invasive weeds in Meghalaya and other states in north-east India. Factors favouring biological invasions are briefly covered. Some of the worst invasive weeds that have affected human health and the economic status of the tribal populations of the region are presented: Mikania micrantha, Lantana camara, Chromolaena odorata, Ageratina adenophora, Eichhornia crassipes, Galinsoga quadriradiata and Parthenium hysterophorus. |