单词	trophic level
释义	trophic level noun : one of the hierarchical strata of a food web characterized by organisms which are the same number of steps removed from the primary producers Example Sentences Recent Examples on the Web One way that extra trophic level or two could be explained? Melissa Cristina Márquez, Forbes, 29 June 2022 One of the most important applications of nitrogen stable isotopes is its ability to determine the trophic level of a species. Melissa Cristina Márquez, Forbes, 29 June 2022 Feeding at the same trophic level does not necessarily imply direct competition between megalodon and great white sharks for the same prey, as both species could have specialized in different prey. Katie Hunt, CNN, 31 May 2022 What’s useful to Fleming is that these elements can act as tracers of different aspects of the environment, including, for a migrating whale, its geographic location and the trophic level (position in the food web) of what the whale has been eating. Jennifer S. Holland, Smithsonian, 1 Sep. 2017 This indicated that the birds’ food chain had become shorter; somewhere in the birds’ food chain, animals were eating at a lower trophic level. Wendy Mitman Clarke, Smithsonian, 26 Apr. 2017 Word History First Known Use 1942, in the meaning defined above
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