Chapter 54
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Created by:
erincahill2 on October 6, 2010
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21 terms
Terms | Definitions |
|---|---|
 interspecific interactions | relationship between individuals of two or more species in a community |
| resource partitioning | differentiation of niches that enables similar species to coexist in a community |
| fundamental niche | niche potentially occupied by a species |
| realized niche | portion of its fundamental niche it actually occupies |
| allopatric | occurring in separate locations, describes populations that rarely interbreed because they are separated geographically |
| sympatric | (of biological species or speciation) occurring in the same or overlapping geographical areas |
| character displacement | tendency for characteristics to be more divergent in sympatric populations of two species than in allopatric populations of the same two species |
| predation | +/- in which one predator, kills and eats the other, prey; ex. lion and antelope |
| cryptic coloration | camouflage that makes potential prey difficult to spot against background |
| aposematic coloration | bright coloration of animals with effective physical or chemical defenses as warning to predators |
| Batesian mimicry | palatable or harmless species mimics an unpalatable or harmful model |
| Mullerian mimicry | two or more unpalatable species resemble each other; ex. cuckoo bee and yellow jacket |
| herbivory | +/- in which an organism eats parts or plant or alga |
| parasitism | +/- in which a parasite derives its nourishment from another organism, its host, which is harmed in the process |
| mutualism | +/+ |
| obligate mutualism | at least one species has species has lost ability to survive without its partner |
| facultative mutualism | both species can survive alone |
| commensalism | +/0; interactions between species benefits one of the species but neither harms nor helps the other; ex. cowbirds and cattle |
| species richness | number of different species in community |
| relative abundance | proportion each species represent |
| food chain | transfer of food energy up trophic levels |
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