Subedi, Kanchana

Biological diversity faces many threats throughout the world. One of the major threats to native biological diversity is caused by Invasive Alien Species (IAS) which can damage or replace native animal and plant populations, as well as the health of our ecosystems. The impacts of IAS are immense, insidious and usually irreversible. The scope and cost of biological alien invasives is global and enormous in ecological, environmental and economic terms.