Share this entry

Share this page

trophic level

Syllabification: troph·ic lev·el

Definition of trophic level in English:

noun

Ecology
Each of several hierarchical levels in an ecosystem, comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy.
Example sentences
  • The transfer of energy from lower trophic levels to higher ones is inefficient so herbivores eat large quantities of plant material, and carnivores eat many times their body weight of prey during their lifetime.
  • Reduced sea ice extent or the timing of sea ice formation and break-up will impact the lower trophic levels of the ecosystems upon which polar bears depend.
  • Other studies of omnivory have manipulated one trophic level, and have primarily been interested in the effects of omnivores on the lowest trophic level of a food chain or web.

Definition of trophic level in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day Noel
Pronunciation: nəʊˈɛl
noun
Christmas…