At 08:27 PM 4/5/2006, Gary Ervin wrote: >Invasive species - alien species that have overcome environmental, >reproductive, and dispersal barriers in their new range, thus that they >now readily spread and establish into either disturbed or undisturbed >habitats
Well, as president Reagan might say, I'm not so sure that a crucial distinction is not missing here. If an organism colonizes only disturbed habitats, and does not establish viable populations in undisturbed ones, is there not a significant difference there worthy of a distinguishing term? WT
