trophic level


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trophic level

n.
The position of a species or a group of species within a food chain or food web.

trophic level

any of the feeding levels that energy passes through as it proceeds through the ecosystem. For example, primary producers (see PRIMARY PRODUCTION) form the first level in most ecosystems, followed by PRIMARY CONSUMERS (herbivores) up to the top predator level. See PYRAMID OF NUMBERS, BIOMASS.