FSU
BSC 2011 -
Population Growth
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53.3, 4, 5, 6: Population GrowthPopulation Growth: ExponentialdN=rinstNdtN/t= change in total population size with change in time=bN-dNb birth rate so bN is the # of births in the population (increase)d death rate so dN is the # of deaths in population (decrease)b – d=r (rate of increase)*The larger the population, the faster it will grow. * world’s population is exponential Logistic dN=rmaxN*((K-N)/K)dtK= carrying capacity (# of ind. that can survive in a given environment)When N=K the population stays the same sizeDensity-Independent factors: CLIMATEDensity-Dependent factors: FOOD
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