Adaptive evolution in urban ecosystems
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Urban ecologists have demonstrated that cities are functioning ecosystems. It follows then that species living in these contexts should participate in and experience the same suite of biological processes, including evolution, that have occupied scientists for centuries in more “natural” contexts. In fact, urban ecosystems with myriad novel contexts, pressures, and species rosters provide unprecedentedly potent evolutionary stimuli. Here, we present the case for studying adaptive evolution in urban settings. We then review and synthesize techniques into a coherent approach for studying adaptive evolution in urban settings that combines observations of phenotypic divergence, measurements of fitness benefits of novel genetically based phenotypes, and experimental manipulations of potential drivers of adaptation. We believe that studying evolution in urban contexts can provide insights into fundamental evolutionary biology questions on rate, direction, and repeatability of evolution, and may inform species and ecosystem service conservation efforts.
KeywordsAnthropocene Cities Ecosystem services Evolutionary ecology Experimental evolution Urbanization
We thank the School of Forestry and Environmental Studies for financial support and colleagues for informal discussions that influences our thinking. C. Stockwell and an anonymous reviewer made valuable contributions to the final draft.
- Danchin, E., L.A. Giraldeau, and F. Cezilly. 2008. Behavioural ecology. New York: Oxford University Press Inc.Google Scholar
- Endler, J.A. 1986. Natural selection in the wild. Princeton: Princeton University Press.Google Scholar
- Garland Jr, T., and M.R. Rose. 2009. Experimental evolution. Berkeley: University of California Press.Google Scholar
- Hitchings, S.P., and T.J.C. Beebee. 1998. Loss of genetic diversity and fitness in common toad (Bufo bufo) populations isolated by inimical habitat. Journal of Evolutionary Biology 11: 269–283.Google Scholar
- Kinzig, A.P., P. Warren, C. Martin, D. Hope, and M. Katti. 2005. The effects of human socioeconomic status and cultural characteristics on urban patterns of biodiversity. Ecology and Society 10: 23.Google Scholar
- Losos, J.B. 2009. Lizards in an evolutionary tree. Ecology and adaptive radiation of Anoles. Berkeley: University of California Press.Google Scholar
- Millennium Ecosystem Assessment (MEA). 2005. Ecosystems and human well-being: Synthesis. Washington, DC: World Resources Institute.Google Scholar
- Stearns, S.C. 1983. A natural experiment in life-history evolution: Field data on the introduction of mosquitofish (Gambusia affinis) to Hawaii. Nature 37: 601–617.Google Scholar
- Stearns, S.C., and R.F. Hoekstra. 2001. Evolution: an introduction. New York: Oxford University Press.Google Scholar