Term
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Definition
| Total range of environmental conditions under which a species can survive. |
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Term
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Definition
| Assumes the presence and abundance of species in a community are a result of independent responses to environmental conditions; species interactions are considered to be unimportant. |
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Term
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Definition
| Indirect interaction that is positive to one of the species involved, while neutral to the other. |
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Term
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Definition
| Predation that is central to the organization of a community; the predator enhances one or more inferior competitors by reducing the abundance of the superior competitor. |
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Term
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Definition
| Occurs when a single species of predator feeds on two prey species supporting a higher predator density, increasing the rate at which prey are consumed. As a result, the density of both prey species is lowered, suggesting a competitive interaction. |
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Term
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Definition
| Influence of producers on the trophic levels above them in a food web. |
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Term
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Definition
| Influence of predators on size of lower trophic levels in a food web. |
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