Biology 4.2 Niches and Community interactions
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Created by:
mhawkins12 on October 26, 2010
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Biology 4.2 pg 99
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17 terms
Terms | Definitions |
|---|---|
 Tolerance | ability to survive and reproduce under a range of environmental circumstances |
| Habitat | the area, or "Adress", an organism occupies because of a specific tolerance |
| Niche | range of physical and biological conditions in which species live and the way they survive. how an organism interacts with environment. |
| Resource | necessity for organism to survive |
| Physical aspects of niche | abiotic features in environment organism needs to survive |
| Biological aspects of niche | biotic factors with which an organism interacts with to survive. |
| Competition | the fight between organisms for necessary resources to survive in environment |
| Intraspecific competition | competition between members of SAME SPECIES |
| interspecific competition | competition between members of DIFFERENT Species |
| Competitive Exclusion Principle | no two species can occupy the exactly the same niche, in exactly the same habitat, at the exact time. |
| Predation | one animal hunting and killing another affect: the size of population and determine places for pray |
| Herbivory | Herbivore-Plant relationship consumer (herbivore) eats producer (plant) |
| Keystone Species | species in food web that, if removed in some form, will cause the entire web to collapse. ex. otter in pacific |
| Symbioses | any relationship between one organism and another "living together" |
| Mutualism | a win-win situation for both organisms |
| Parasitism | win-lose situation. one organism, the host, provides, and loses nutrients for other species |
| Commensalism | relationship between which neither species benefit from each other. |
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