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30 Cards in this Set
- Front
- Back
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what consists of interacting species, usually living within a defined area
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community
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what is a -/- interaction that occurs when different individuals use the same resources and when those resources are limited
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competition
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what is intraspecific competition
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competition between members of the same species
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what is interspecific competition
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competition between members of different species
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what is competitive exclusion
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two species vying for the same resources cannot occupy the same niche
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what is asymmetric competition
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one species suffers greater fitness decline than the other
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what is symmetric competition
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each species suffer equal fitness decline
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what is a fundamental niche
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the potential areas or resources an organism may utilize
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what is a realized niche
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the actual area or resources an organism utilizes in a particular environment
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what is niche differentiation
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when competing species are not completely excluded
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what is comsumptive competition
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two species consume same resources
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what is preemptive competition
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one species makes space unavailable to other species
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what is overgrowth competition
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one species grows above another
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what is chemical competition
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one species produces toxins that negatively affect another species
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what is territorial competition
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a mobile species protects its feeding or breeding territory against other species
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what is encounter competition
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two species interfere directly for access to specific resources
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what is herbivory
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plant eaters
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what is carnivory
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meat eaters
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what is omnivory
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plant and animal eaters
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what is predation
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predator (the eater) and prey (the eaten)
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what is parasitism
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parasite and host
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what is mullerian mimicry
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when harmful prey species resemble each other
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what is batesian mimicry
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harmless species resemble harmful predators
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what is species richness
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a measure of the number of different species
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what is species diversity
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a measure of the relative abundance of specific species
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what is the shannon-weaver index
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it takes into account both species richness and diversity
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what is a keystone species
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a species that has a much greater impact on the surrounding species than its abundance would sugest
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what is a climax community
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the stable, final stage of an ecological community that develops from ecological succession
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what is succession
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the recovery from severe disturbances that remove all or most of the organisms from an area
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what is a pioneer community
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early settlers, usually very weedy-like
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