unit 2 lecture 1

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12 Terms

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Population

multiple organisms of single species

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Community

mutiple species in same place

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Ecosystem

Community + environment

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Biosphere

has organisms, population, community, & ecosystem

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Life history

the pattern of survival and reproduction events typical for a member of the species

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Principle of allocation

individuals have limited resources to invest in different activities & functions

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Trade-off

resources in one function are not available for another

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Survivorship

Three types

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Fast-Slow continuum

live small, die young & life big, die old

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type 1

most individuals reach old age (humans)

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Type 2

some individuals reach old age

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Type 3

very few individuals reach old age