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29 Cards in this Set
- Front
- Back
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ecology |
the study of the relationship between an organism and it's environment |
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population |
all of the members of one species that live in a certain place at a certain time |
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limiting resource |
limits the population, causes reproduction to slow |
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carrying capacity |
number of organisms that can live in a space (K) |
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population equilibrium |
stable population number over time |
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unstable (stocastic) population |
when population is unpredictable over time |
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abiotic |
nonliving influence factors (rain, temp., humidity) |
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biotic |
living influence factors (predators, competition) |
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predation (predators) |
any interaction between 2 species where one benefits and the other is harmed |
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interspecific competition |
competition between different species for resources |
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intraspecific competition |
competition within the same species for resources |
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exploitation competition |
organism will use up all of resources before any other organism can use |
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interference competition |
fight over resource |
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competitive exclusion principle |
no two species can use the same resource in the same way |
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community |
all members of all species in certain place at a certain time |
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assemblage |
related members in a community |
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guild |
how an organism makes a living |
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succession |
gradual/directional change in a community following a disturbance or creation of new space |
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climax community |
a community that hasn't been disturbed |
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facilitation model |
primary succession |
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tolerance model |
small area, when an area is disturbed and conditions change now dependent on what vegetation can thrive and tolerate conditions |
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inhibition model |
specie try to keep one specie from growing there by taking up all the space or release chemicals |
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specie richness |
the number of species in a community |
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specie eveness |
the relative number of species |
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specie diversity index |
includes specie richness and eveness |
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Keystone specie |
when top predator (keystone) is removed for a community it results in a smaller number of specie in a community |
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mutalism |
where two species interact and both benefit |
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facultative mutalism |
where organism can live without mutalistic partner |
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obligate mutalism |
specie can't live without mutalistic partner |
