BIO120H1 Lecture Notes - Lecture 5: Stoat, Lemming, Exponential Growth
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BIO120H1 Full Course Notes
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Pop eco: the study of factors affecting pop + how + why a pop changes over time. Roots in the study of: pop growth, regulation, dynamics, demography. Human pop growth = imp model for most enviro issues. Org"s life history = record of major events relating to growth, development, r + s. Pops grow @ geometric/exponential rates if unlimited resources. Geometric pop grow through pulsed repro (annual repro) Exponential pop grow continuously (repro @ any time) All populations begin in exponential growth in favorable enviro + low pop densities. May apply to pops establishing in new enviro. G + e growth can"t continue indefinitely, must eventually slow + stop. Resources depleted = pop growth rate slows and eventually stops = logistic. Pop size where growth stops = carrying capacity. # of individuals of a particular pop the enviro can. Pop = constant here, so br = dr = pg = 0.
