BIO120H1 Lecture Notes - Lecture 8: Metapopulation, Santa Catalina Mountains
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BIO120H1 Full Course Notes
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Depends on lupine, females disperse, find that plant, put caterpillars on the plant so they can grow. Spatial map of habitat with 2 types of vegetation: prairie and farm. Butterflies must discover prairie or will die without reproducing. Smaller patches of prairie cannot handle population of butterflies so they go extinct. Little patch can keep going if there is a big population in the neighborhood by migration. Conclusion: a bigger patch can help out to a patch that is going to extinction by rescue/migration. Pika populations in tailing pile are good pika habitat. What is % of patches with pika: north patch network: high, stable, anchored by big reservoirs, middle: low, extinction/renewal, south: marginal, in decline. From metapopulation model: high, stable, low,stable, unstable. Patches are connected by migration -> uncoupled the patches: doing well, source, dispersing population to middle and south populaiton, sink population, goes extinct without source population, sink.
