BILD 3 Chapter Notes - Chapter 3: Metapopulation, Zero Population Growth, Logistic Function
30 May 2016
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1. the exponential and logistic models describe the growth of populations a. If there is abundant resources - there is potential to reproduce exponentially. Delta n/ delta t = b - d. D is number of deaths: annual per capita bith rate a. i. B = bn where b is the annual per capita birth rate n is population size: you can then put in the per capita death rate a. i. Delta n/delta t = bn - mn (death rate: zero population growth (zpg) a. i. Delta n/delta t = rn where r indicates if a population is growing or not: difference per capita rate of increase a. i. R = b-m a. i. 1. (birth rate - death rate) 2. exponential growth: population increase under ideal conditions a. i. a. ii. a. iii. May assume the max rate for the species also dn/dt = r(max)n. Although max rate of increase is constant a. i. 1. a. Population grows more quickly when it is large than small.
