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Ecosystem Shape
| Term | Definition |
|---|---|
| biotic factors | the biological influences on organisms within an ecosystem |
| abiotic factors | physical, or nonliving, factors that shape ecosystems |
| habitat | the area where an organism lives |
| niche | the full range of physical and biological conditions in which an organisms lives and the way in which the organism uses these conditions |
| resource | any necessity of life, such as water, nutrients, light, food, or space |
| competitive exclusion principle | a fundamental rule in ecology that states that no two species can occupy the same niche in the same habitat at the same time |
| predation | an interaction in which one organism captures and feeds on another organism |
| symbiosis | any relationship in which two species live closely together |
| mutualism | symbiotic relationship in which both species benefit from the relationship |
| commensalism | symbiotic relationship in which one member of the association benefits and the other is neither helped nor harmed |
| parasitism | symbiotic relationship in which one organism lives in or on another organism (the host) and consequently harms it |
| ecological succession | a series of predictable changes that occurs in a community over time |
| primary succession | succession that occurs on surfaces where no soil exists |
| pioneer species | the first species to populate an area |
| secondary succession | succession that occurs when a disturbance of some kind changes an existing community without removing the soil |
Created by:
Askjagden
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