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Species Invasion History Influences Community Evolution in a Tri-Trophic Food Web Model

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Title: Species Invasion History Influences Community Evolution in a Tri-Trophic Food Web Model
Authors: Mougi, Akihiko Browse this author
Nishimura, Kinya Browse this author
Issue Date: 24-Aug-2009
Publisher: The Public Library of Science (PLoS)
Journal Title: PLoS ONE
Volume: 4
Issue: 8
Start Page: e6731
Publisher DOI: 10.1371/journal.pone.0006731
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. Methodology and Principal Findings 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 and Significance 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.
Type: article
Appears in Collections:水産科学院・水産科学研究院 (Graduate School of Fisheries Sciences / Faculty of Fisheries Sciences) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 西村 欣也

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