Noun
English Wikipedia has an article on:trophic levelWikipedia
trophic level (plural trophic levels)
(ecology) A particular position occupied by a group of organisms in a food chain.
Allosaurus accounted for 70–75% of theropod specimens and was at the top trophic level of the Morrison food web. Source: Internet
An ocean food web showing a network of food chains The fourth trophic level consists of predatory fish, marine mammals and seabirds that consume forage fish. Source: Internet
Due to their small size, and position in the lower trophic level of many marine food webs, the levels of methylmercury they bioaccumulate are very low, reducing the risk of mercury poisoning when consumed. Source: Internet
Each trophic level contains unrelated species that are grouped together because they share common ecological functions, giving a macroscopic view of the system. Source: Internet
However, determining the trophic level of some plankton is not straightforward. Source: Internet
Real systems are much more complex than this—organisms will generally feed on more than one form of food, and may feed at more than one trophic level. Source: Internet