Biological invasion - Global terror

摘要

The invasion of alien species is recognized as a primary cause of global biodiversity loss. The Convention on Biological Diversity (CBD), 1992 visualized 'biological invasion of alien species as the second worst threat after habitat destruction'. Biodiversity loss caused by invasive species may soon surpass the damage done by habitat destruction and fragmentation. Biological invasion may be considered as a form of biological pollution and a significant component of the human-induced global environmental change. In fact, introduced species are a greater threat to native biodiversity than pollution, harvest and disease combined super(2). Invasive species referred to as alien 'pests' or 'weeds' impose high costs on agriculture, forestry, and cause damage to ecosystems or the environment.