Head, Lesley and Muir, Pat, 2004, Nativeness, Invasiveness, and Nation in Australian Plants, Geographical Review, 94, 199-217.
The conceptualization of alien invasive species conflates two axes of variability that have become unhelpfully blurred. The nativeness / aliendness axis refers to the presumed belonging of a species in ecological or social space. Invasiveness refers to the behaviour of the species in questoin, particularly in relation to other species. the overlay of nation introduces further variability. Teasing these axes apart is important for more effective environmental management.