chapter 3,4: ecology
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Created by:
rubmegenie on June 4, 2012
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21 terms
Terms | Definitions |
|---|---|
 ecology | study of interactions among organisms and between organisms and their enviroment |
| species | animal |
| population | same species in an area |
| community | multiple populations |
| ecosystem | living & noliving parts |
| biome | group of ecosystems (desert) |
| biosphere | earth |
| abiotic | nonliving things that shape the ecosystem |
| biotic | biological influence on organisms within an ecosystem |
| producer | autotroph |
| consumer | heterotroph |
| herbivore | eats plants only |
| omnivore | eats plants & animals |
| carnivore | eats only animals |
| food web | network formed from the intereactions of feeding relationships within organisms in an ecosystem |
| food chain | series of steps in an ecosystem where organisms transfer energy by eating & being eaten |
| niche | all physical and biological conditions in which an organism lives and how the organism uses those conditions |
| climate | average conditions of temperature & precipitation |
| limiting nutrients | single nutrient that is either scarce or cycles very slowly, limiting growth of organisms in an ecosystem |
| succession | how things change over time |
| pioneer species | fist species to populate an area during primary succession |
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