Ecology
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16 terms
Terms | Definitions |
|---|---|
 ecology | the systematic study of how organisms interact with one another and with their environment. |
| environment | biotic (other organisms) and abiotic ( physical factors). |
| biotic | other organisms. |
| abiotic | physical factors. |
| population | group of individuals of the same species occupying a common geographical area |
| community | two or more populations of different species occupying the same geographical area Populations and communities include only biotic factors |
| ecosystem | a community plus its abiotic factors, e.g. soil, rain, temperatures, etc. |
| biosphere | the portion of the earth that contains living species. It includes the atmosphere, oceans, soils and the physical and biological cycles that affect them |
| community | two or more populations of different species occupying the same geographical area. |
| habitat | the physical place where an organism lives |
| niche | the functional role of an organism in a community, its job or position. |
| neutral | two species that don't interact at all. |
| commensalism | beneficial to one species but neutral to another |
| mutualism | an interaction that is beneficial to both species |
| parasitism | an interaction that benefits one species and is detrimental to another. Note that the host is generally not killed. |
| predation | an interaction beneficial to one species and detrimental to another. In this case the prey is killed. |
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