12 - Age Structured Population Growth

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9 Terms

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age structure

the proportion of a population at different ages 

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high survival (low death rates) until old age

type 1 survivorship curve

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steady survival and death rates over time

type 2 survivorship curve

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low survival (high death rates) when young and high survival rates when older

type 3 survivorship curve

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fecundity

the number of offspring produced per reproductive event

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stable age distribution

the proportions of individuals remain constant over time

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survivorship

the probability of surviving from birth to age X

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net reproductive rate 

the expected number of female offspring one female individual produces in her lifetime

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expected generation time

weighted average of the proportion of births that occur at each age