The combination of natural habitat loss and the introduction of invasive exotic animal and plant species is causing environmental chaos. This book, the result of a 1991 symposium in Indianapolis, focusses on causes, case studies, control measures, management practices, ecological and economic consequences, and policy. Chapters include: Biological Pollution Through Fish Introductions; The Diaspora of the Asian Tiger Mosquito; Dogwood Anthracnose: Native Fungus or Exotic Invader?; The Fire Ant: Still Unvanquished.