The Ecology, Economics, and Management of Alien Invasive Species Ryan Chisholm OUTLINE

Abstract

Biological invasions have been a feature of global ecology since the origin of life: plants and animals invaded the land from the sea, and chance dispersal events have occasion- ally allowed species to invade new continents, islands, or bodies of water. The current wave of biological invasions is qualitatively different from these prehistoric invasions be- cause it is mediated by human activities. It is also quanti- tatively different because the frequency of invasions is or- ders of magnitude higher than background levels.