Q4-Population Ecology

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exponential growth curve
dN/dt = rN (r=intrinsic growth rate, r=b-d, N=population size)
logistic growth curve
dN/dt = rmaxN((K-N)/K) (K=carrying capacity)
phases of logistic growth
growth is exponential -> growth rate begins to decline -> growth rate is 0 at carrying capacity
density dependent growth
survival and fecundity rates decline at high population density
metapopulation
a population of populations; many small patches of habitat; many independent populations
how metapopulations work
extinction, migration, and recolonization
age pyramid
graphs with horizontal bars representing the number of males and females in each age group