ENVS200 Lecture Notes - Lecture 8: Crypsis, Batesian Mimicry, Paramecium
15 Jun 2015
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Document Summary
A group of populations of the same species that are groued together by the exchange of individuals among them. Can occur if the pop are separated by distance and terrain that can be crossed by the species, at least during one life stage. Population abundance can be related to the concepts of habitable patches and dispersal distance. Ex: bay checkerspot butterfly has been a focus of conservation efferts in northern california. Habitat specialist, only feeds on single plant found in small patches. Populations frequently go extinct due to weather changes like drought, one large patch is considered stable and serves as the main source of colonists. Simple metapopulation model accounts for zise of patch, proximity to morgan hill, topography, and host plant population densities. These patches of land are similar to islands, habitat surrounded by something else. When developing metapopiulation models we expand our scale of observations.
