Ekologijos terminų aiškinamasis žodynas. – Vilnius : Grunto valymo technologijos. Algimantas Paulauskas, Karolis Jankevičius, Rapolas Liužinas, Vytautas Raškauskas, Petras Zajančkauskas. 2008.
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 lake — An oligotrophic lake is a lake with low primary productivity, the result of low nutrient content. These lakes have low algal production, and consequently, often have very clear waters, with high drinking water quality. The bottom waters of such… … Wikipedia
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
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
Synechococcus — Taxobox | name = Synechococcus image width = 200px image caption = TEM of Synechococcus regnum = Bacteria divisio = Cyanobacteria ordo = Synechococcales familia = Synechococcaceae genus = Synechococcus genus authority = Nägeli, 1849 subdivision… … Wikipedia
Kelp forest — Kelp forests are underwater areas with a high density of kelp. They are recognized as one of the most productive and dynamic ecosystems on Earth.Mann, K.H. 1973. Seaweeds: their productivity and strategy for growth. Science 182: 975 981.] Kelp… … Wikipedia
Lake trout — Taxobox name = Lake trout image width = 250px image caption = Salvelinus namaycush status = Secure regnum = Animalia phylum = Chordata classis = Actinopterygii ordo = Salmoniformes familia = Salmonidae genus = Salvelinus species = S. namaycush… … Wikipedia
Nitrogen cycle — Schematic representation of the flow of nitrogen through the environment. The importance of bacteria in the cycle is immediately recognized as being a key element in the cycle, providing different forms of nitrogen compounds assimilable by higher … Wikipedia
Soritacea — Taxobox name = Soritacea domain = Eukaryota regnum = Rhizaria phylum = Foraminifera ordo = Miliolida superfamilia = Soritacea superfamilia authority = Ehrenberg 1839 subdivision ranks = Families subdivision = Soritidae PeneroplidaeThe Soritacea… … Wikipedia
