英语词汇“trophic level”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	trophic level
释义	trophic level trophic level n. The position of a species or a group of species within a food chain or food web. troph′ic lev`el n. Ecol. each of the levels of feeding that together form a food chain. [1940–45] trophic level trophic level [′träf·ik ‚lev·əl] (ecology) Any of the feeding levels through which the passage of energy through an ecosystem proceeds; examples are photosynthetic plants, herbivorous animals, and microorganisms of decay. trophic level 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.
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trophic level