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| the divergence in morphology between similar species in the region where the species both occur, but this divergence is reduced or lost in regions where the species' distributions do not overlap; presumed to be caused by competition |
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| the ecological space occupied by a species in the absence of competition and other biotic interactions from other species |
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| complete competitors cannot coexist; also called the competitive exclusion principle |
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the set of equations that describe competition between organsisms for food or space; another set of equations describes predator-prey interaction
dN1/dt = r1N1(K1-N1-aN2)/K |
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| the ecological space occupied by a species and the occupation of the species in a community |
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| the observed resource use of a species in the presence of competition and other biotic interactions; contrast with fundamental niche |
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| the type of natural selection experienced by populations that are undergoing rapid population increase in a relatively empty environment |
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| 6 interactions between individuals of different species |
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| competition, predation, herbivory, parasitism, disease, mutualism |
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resource (scramble): occurs when a number of organisms utilize common resources that are in short supply
interference (contest): occurs when the organisms seeking a resource harm one another in the process, even if the resource is not in short supply |
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| population growth of species 1 in competition with species 2 |
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Definition
dN1 = r1N1(K1-N1-αN1)
------- ------------------
dt K1 |
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| n-dimensional hypervolume |
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Definition
GG Evelyn Hutchinson
space where organism actually occupies |
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an outcome of competition- evolutionary outcome
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resource partitioning and character displacement
ex: noddy birds in foraging size |
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| precocial; less parental care |
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| altricial; take care of young- investment |
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