OIST-UT Joint talk series for future science-Season6: The struggle for coexistence: empirical approaches to understand mechanisms of persistence under competition


2022年5月18日 (水) 17:30 18:30





The struggle for coexistence: empirical approaches to understand mechanisms of persistence under competition


When populations compete for a shared essential resource, the outcome is often competitive exclusion. Occasionally, however, stable coexistence is possible if certain conditions are satisfied. But how do we know these conditions, and perhaps more importantly, how do we measure them? In this talk, I will briefly review “modern” coexistence theory and then discuss an empirical application with the goal of understanding how trait differences and environmental variation can determine species coexistence. Using floating aquatic plants as an example, I will then demonstrate how coexistence theory can be used to understand how species’ geographic ranges can be jointly shaped by environmental variation and competition within and among species. As the coexistence mechanisms I will discuss are extremely general phenomena that apply to most competitive systems, it is my hope that this talk encourages researchers in medical, social, and biological fields to take a fresh perspective on the subject of invasion, competition, and coexistence. 


Dr. David Armitage, Assistant Professor, Integrative Community Ecology Unit, OIST


Dave Armitage is an ecologist working at the intersection of communities and ecosystems. In his current role as an assistant professor at OIST, he leads the Integrative Community Ecology Unit — a group of ~10 researchers working on the population biology of plants, animals, microbes, and theory. Dave’s own research centers on questions surrounding species coexistence in variable environments, the evolution of plant-microbe interactions, and the natural history of carnivorous plants. He is also beginning to study the spatial ecology of plant secondary metabolites. In his educational role, Dave has taught university courses in ecology, plant systematics, and statistics.




Prof. Yasuo Ihara (The University of Tokyo)



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