Detritus
gale
views updated May 23 2018Detritus
Detritus is dead and decaying matter including the wastes of organisms. It is composed of organic material resulting from the fragmentation and decomposition of plants and animals after they die. Detritus is decomposed by bacterial activity, which can help cycle nutrients back into the food chain. In aquatic environments, detritus may make up a substantial percentage of the particulate organic carbon (POC) that is suspended in the water column. Animals that consume detritus are called "detritivores". Although detritus is available in large quantities in most ecosystems, it is usually not a very high quality food, and may be lacking in essential nitrogen or carbon compounds. Detritivores generally must expend a larger amount of energy to assimilate carbon and nutrients from detritus than from sources of food based on living plant or animal material. Some detritivores harbor beneficial bacteria or fungi in their guts to aid in the digestion of compounds that are difficult to degrade.
[Marie H. Bundy ]
Environmental Encyclopedia Bundy, Marie H.
detritus
oxford
views updated May 11 2018de·tri·tus / diˈtrītəs/ •
n. waste or debris of any kind: streets filled with rubble and detritus. ∎ gravel, sand, silt, or other material produced by erosion. ∎ organic matter produced by the decomposition of organisms.DERIVATIVES: de·tri·tal / -təl/ adj.
The Oxford Pocket Dictionary of Current English
detritus
oxford
views updated May 29 2018detritus Particles of organic material derived from dead and decomposing organisms, resulting from the activities of the
decomposers. Detritus is the source of food for
detritivores, which can themselves be eaten by carnivores in a
detritus food chain: detritus → detritivore → carnivore.
A Dictionary of Biology
detritus
oxford
views updated May 23 2018detritus Litter formed from fragments of dead material (e.g. leaf litter, dung, moulted feathers, and corpses). In aquatic habitats, detritus provides habitats equivalent to those which occur in soil
humus.
A Dictionary of Ecology MICHAEL ALLABY
detritus
oxford
views updated May 23 2018detritus Litter formed from fragments of dead material (e.g. leaf-litter, dung, moulted feathers, and corpses). In aquatic habitats, detritus provides habitats equivalent to those which occur in soil
humus.
A Dictionary of Zoology MICHAEL ALLABY
detritus
oxford
views updated Jun 27 2018detritus Literally, debris produced by rubbing; fragments of dead material (e.g. leaf litter, dung, moulted feathers, and corpses). In aquatic habitats, detritus provides habitats equivalent to those that occur in soil humus.
A Dictionary of Plant Sciences MICHAEL ALLABY
Detritus
gale
views updated Jun 11 2018Detritus
an accumulation of debris; any waste or disintegrated material. See also debris.
Examples: detritus of languages, 1851; of ruins, 1866; of loose stones, 1851; loose detritus of thought, 1849.
Dictionary of Collective Nouns and Group Terms
detritus
oxford
views updated May 11 2018detritus †wearing away by rubbing XVIII; (after F.
détritus) matter produced by such action XIX. — L.
dētrītus, f.
dētrī- (see prec.).
The Concise Oxford Dictionary of English Etymology T. F. HOAD
detritus
oxford
views updated May 14 2018detritus (di-try-tŭs) n. particles of matter produced by disintegration, tissue death, etc.
A Dictionary of Nursing