BIOL 111 Lecture Notes - Lecture 9: Exponential Growth, Logistic Function, Intraspecific Competition
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: # of individuals density : # of individuals / unit of area ages#xe. : proportion of individuals of different ages dynamics population interactions between abiotic and biotic factor cause variation in pop. size (cid:8869) (cid:8869) (cid:8869) (cid:8869) " am " births immigration - increase pop . Size: deaths t emigration - decreases pop . size (cid:8869) population growth : : : : is e::? (cid:8869) population size influences: parental age younger parents faster increase available resources. " healthier people live longer low death rate tf*m(cid:8869)\ www. go. baac. minmagga. " busts " fluctuations booms i pop . Opportunities take y : immediate advantage of favourable conditions equilibrating. : develop t reach sexual maturity slowly , produce few viable offspring , larger bodies t live longer life history strategies (cid:8869) trade offs number a size of offspring. Many t smaller (cid:8869) strategies framework for how organisms allocate energy between survival.
