Abstract

Non-native species are implicated in many ecological and economic problems, and the field of invasion biology has burgeoned in response to this fact. However, classification, terminology, and management of non-native species generate controversies and even calls for abolition of the field. The fact that the basis for disputes is differing worldviews rather than simply interpretation of biological observations suggests that resolving arguments about non-native species will be difficult, independently of questions about the operational tractability of proposed courses of action.