EEB321H1 Lecture 17: L17 - Island Biogeography Theory
9 Apr 2017
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Started with idea of coexistence (local coexistence: rules that determine how species establish, simplest case of coexistence, simple rules governing when invasions can occur when 1 species is at equilibrium. Species traits and phylogeny feed into framework. Not only different niches, but also different life-history traits that influence diversity. See how species sensitivity to population size and dispersal influences patterns of species diversity. Explain how population size influence extinction rates: mechanisms of how this works. Explain how extinction and colonization rates on island influence current # of spp on island. Factors that alter extinction and colonization rates. Rescue effect and target effect related to ibt. Quick review: why are small populations more likely to go extinct. Idea that small populations more likely to go extinct = central to island biogeography and all patchy populations through space. Models have underlying assumption about how population goes extinct depending on population size. Look at bird breeding pair data from bunch of islands.
