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My students and I try to determine how natural selection shapes plant reproduction and life history. We apply a diverse and integrative approach that includes studies of resource-allocation theory, genetics, natural selection in the wild, geographic distribution and geographic variation, pollination biology, experimental population biology, and physiological ecology.

Clarkia xantiana -- breeding systems, life history, color polymorphism, geographic range (Potential summer students, click here.)	Phacelia linearis -- sexual systems	Linum rigidum -- Iowa plant and animal ecology