> > Thanks for posting this. However, it is bad science, and should not give us rare plant lovers any reason to be happy. Further poking about found this paper: http://macalester.edu/~davis/davisbioscience.pdf/ Biotic Globalization: Does Competition from Introduced Species Threaten Biodiversity? MARK A. DAVIS The introduction of new predators and pathogens has caused numerous well-documented extinctions of long-term resident species, particularly in spatially restricted environments such as islands and lakes. However, there are surprisingly few instances in which extinctions of resident species can be attributed to competition from new species Mar