BIO120H1 Lecture Notes - Lecture 8: Multivariate Statistics, Ghost Town, Spatial Ecology
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BIO120H1 Full Course Notes
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Population persistence of a rare butterfly in habitat patches. A real case in conservation biology& spatial ecology. Butterfly was thought to be extinct from 1931 1989 but it was rediscovered on the brink of extinction. The caterpillar can only eat rare lupine plants. Life history: annual pulses of dispersal, mating, and egg-laying, followed by heavy larval mortality; females must find prairie remnants of lupines. Currently, there are few patches where the butterflies can reproduce, when they have pulses of dispersal they need a large enough patch of lupine to survive the next annual pulse. Bodie, california mining ghost town andy smith"s pika research site. Pika"s live in areas with rocks which have large spaces for crevices. Andy smith found pika"s in the tailings piles from hard-rock mining, which create many small replicated patches of pika habitat. Divided the patches of the map in 3 parts, a northern network, a middle patch network and a southern patch network.
