Evolution of Increased Competitive Ability in Invasive Nonindigenous Plants: A Hypothesis

  title={Evolution of Increased Competitive Ability in Invasive Nonindigenous Plants: A Hypothesis},
  author={Bernd Blossey and Rolf N{\"o}tzold},
  journal={Journal of Ecology},
There are very few valid generalizations about invasive species, so that it is only possible to make weak, probabilistic predictions about which species will invade (Gilpin 1990; Daehler & Strong 1993). A phenomenon that has not received much attention, however, is the observation that, in alien environments, plants tend to be more vigorous and taller, producing more seeds than in their native distribution (Crawley 1987). The seed production of Chrysanthemoides monilifera (native to Sout'l… 

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