title: Species invasion history influences community evolution in a tri-trophic food web model.
abstract: BACKGROUND
  Recent experimental studies have demonstrated the importance of invasion history for evolutionary formation of community. However, only few theoretical studies on community evolution have focused on such views.
  
  
  RESULTS
  We used a tri-trophic food web model to analyze the coevolutionary effects of ecological invasions by a mutant and by a predator and/or resource species of a native consumer species community and found that ecological invasions can lead to various evolutionary histories. The invasion of a predator makes multiple evolutionary community histories possible, and the evolutionary history followed can determine both the invasion success of the predator into the native community and the fate of the community. A slight difference in the timing of an ecological invasion can lead to a greatly different fate. In addition, even greatly different community histories can converge as a result of environmental changes such as a predator trait shift or a productivity change. Furthermore, the changes to the evolutionary history may be irreversible.
  
  
  CONCLUSIONS
  Our modeling results suggest that the timing of ecological invasion of a species into a focal community can largely change the evolutionary consequences of the community. Our approach based on adaptive dynamics will be a useful tool to understand the effect of invasion history on evolutionary formation of community.
authors.affiliation: Department of Biology, Kyushu University, Fukuoka, Fukuoka, Japan. mougi@bio-math10.biology.kyushu-u.ac.jp
authors.forename: Akihiko
authors.initials: A
authors.lastname: Mougi
authors.forename: Kinya
authors.initials: K
authors.lastname: Nishimura
mesh_terms: D000818:Animals; D044822:Biodiversity; D005075:Biological Evolution; D004463:Ecology; D020387:Food Chain; D008954:Models, Biological
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