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7 Cards in this Set
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- Back
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Modes of competition
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Interference: direct aggressive interaction between individuals
Intraspecific: completion with members of own species Interspecific: competition between individuals of two species, reduces fitness |
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Intraspecific:
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completion with members of own species
IntrA- comes first witin specises |
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Interspecific:
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competition between individuals of two species, reduces fitness
Iinter- comes second outside species |
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Niches
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Summarizes environmental factors that influence growth, survival, and reproduction of a species
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Principle of competitive exclusion
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two species with identical niches cannot coexist indefinetly
* one will be a better competitor and thus have higher fitness and eventually exclude the other |
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compettion vs nitches
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competition can restrict species to their realized nitches
* may change fundamental nitch *may produce evolutionary response in the competitor population |
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Character Displacemtn
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Because degree of competitoin is assumed to depend upon degree of niche overlap, interspcific competition has been predicted to lead to direct directional selection for reduced niche overlap
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