- oligotrophic environment
-
(ol\'ī-go-trof\'ik)An environment containing low levels of nutrients, particularly nutrients that support microbial growth.
Microbiology. Aard_Wark . 2009.
Microbiology. Aard_Wark . 2009.
Oligotrophic — An oligotrophic ecosystem or environment is one that offers little to sustain life. The term is commonly utilised to describe bodies of water or soils with very low nutrient levels. It derives etymologically from the Greek oligo (small, little,… … Wikipedia
oligotrophic — ol·i·go·tro·phic (ol″ĭ go troґfik) [oligo + trophic] able to live in a nutrient poor environment; said of bacteria and other microorganisms … Medical dictionary
Oligotroph — An oligotroph is an organism that can live in an environment that offers very low levels of nutrients. They may be contrasted with copiotrophs, which prefer nutritionally rich environments. Oligotrophs are characterized by slow growth, low rates… … Wikipedia
Cuatro Ciénegas — de Carranza City Cuatrociénegas Valley … Wikipedia
hydrosphere — /huy dreuh sfear /, n. the water on or surrounding the surface of the globe, including the water of the oceans and the water in the atmosphere. [1885 90; HYDRO 1 + SPHERE] * * * Discontinuous layer of water at or near the Earth s surface. It… … Universalium
Microbial loop — The microbial loop describes a trophic pathway in the marine microbial food web where dissolved organic carbon (DOC) is returned to higher trophic levels via the incorporation into bacterial biomass, and coupled with the classic food chain formed … Wikipedia
Trophic state index — The quantities of nitrogen, phosphorus, and other biologically useful nutrients are the primary determinants of a body of water s trophic state index (TSI). Nutrients such as nitrogen and phosphorus tend to be limiting resources in standing water … Wikipedia
Kobuk River — The Kobuk River is approximately convert|280|mi|km|0|lk=on long, located in the Arctic region of northwestern Alaska in the United States. [USGS Geographic Names Information System (GNIS). [http://geonames.usgs.gov/pls/gnispublic/f?p=gnispq:3:::NO… … Wikipedia
Photosynthetic picoplankton — is the fraction of the plankton performing photosynthesis composed by cells between 0.2 and 2 µm (picoplankton). It is especially important in the central oligotrophic regions of the world oceans that have very low concentration of nutrients.… … Wikipedia
Lake Ohrid — as seen from Galičica Mountain Coordinates … Wikipedia