BIOA02H3 Lecture Notes - Lecture 28: Insular Biogeography, Extinction Vortex, Snow Goose
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BIOA02H3 Full Course Notes
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Document Summary
Geographic range: area in which all populations of a species reside e. g. orioles. Metapopulation: collection of subpopulations that are exch genetic info; habitat fragmentation -> formally continuous population -> subpopulation. Panmixia vs metapopulation = x vs struc involved -> free owing genes vs di subpopulations -> more likely to exch gene info within 1 subpopulation than w/ member of other subpopulation. Population: if sexually reproducing group -> 1 individual = x population unless it"s pregnant. Of individuals in a given area -> (func of) population density (no. = mean + sd: capture-mark-recapture - n/m = n/r -> n = unknown population size vs m = no. Of marked recaptured => e. g. banding snow geese: (reason) [a] allows ppl to know where the population explosion comes from -> estimate no. Of geese hunters can hunt -> control no. Of geese [b] we now facing 6th mass extinction event. Emigration: movement of individual/ gene out of a (sub)population.
