BIOL 243 Lecture Notes - Lecture 1: The American Naturalist, Meadow Vole, Pearson Education

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Learning objectives for theme 4 topic a: population growth. Note: the r in this equation is rmax, the value of r obtained under the most favourable conditions (it"s visualized in slide 7: r when density = 0) Bowen et al. (2003; ices journal of marine science 60:1265) In the logistic model, r decreases as n increases. 7 r = rmax (k - n) / k r is the per-capita rate of population growth i. e. , how many daughters is each. At a stable population, r = 0 (i. e. , n = k) Davidson (1938; transactions of the royal society of south australia 62:342) Density-independence: unaffected by past or present population density. The birth-death balance in pea aphids on alfalfa plants (b) (d) Life history strategies influence population growth r-selected species. Remember that life history strategies form a continuum. Re-cap: population growth (theme 4 -topic a) 18. Influences on pop"n size: birth, death, immigration, emigration.

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