Eva Kisdi
University of Helsinki, Finland
Adaptive dynamics from a single strain to saturated polymorphisms
[When and where]
The modelling framework of adaptive dynamics is particularly suited for understanding how ecological interactions facilitate the evolution of diversity. In this talk, I review two recent lines of development in adaptive dynamics. First, I discuss how the gradual splitting of a lineage during evolutionary branching relates to limiting similarity, which generically excludes the coexistence of similar strains, and what role the trade-off functions play in coexistence and in evolutionary branching. This part will conclude that given a sufficiently complex ecological model (with at least two environmental feedbacks and at least as many trade-offs as feedbacks), the particulars can always be chosen (from open sets) such that evolutionary branching occurs. Second, I consider adaptive dynamics in polymorphic populations where the maximum number of strains are already present, and discuss the special characteristics of adaptive dynamics that apply to such saturated systems.
Keynote
Updated June 22, 2015, by Minus