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biogeochemical cycle — [bī΄ō jē΄ō kem′i kəl] n. the cycle in which nitrogen, carbon, and other inorganic elements of the soil, atmosphere, etc. of a region are converted into the organic substances of animals or plants and released back into the environment * * * ▪… … Universalium
Biogeochemical cycle — A commonly cited example is the water cycle. In ecology and Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical element or molecule moves through both biotic (biosphere) and… … Wikipedia
biogeochemical — noun Date: 1938 of or relating to the partitioning and cycling of chemical elements and compounds between the living and nonliving parts of an ecosystem • biogeochemistry noun … New Collegiate Dictionary
soil — soil1 soilless, adj. /soyl/, n. 1. the portion of the earth s surface consisting of disintegrated rock and humus. 2. a particular kind of earth: sandy soil. 3. the ground as producing vegetation or as cultivated for its crops: fertile soil. 4. a… … Universalium
Microbial ecology — is the ecology of microorganisms: their relationship with one another and with their environment. It concerns the three major domains of life Eukaryota, Archaea, and Bacteria as well as viruses. Microorganisms, by their omnipresence, impact the… … Wikipedia
Sediment Profile Imagery — (SPI) is an underwater technique for photographing the interface between the seabed and the overlying water. The technique is used to measure or estimate biological, chemical, and physical processes occurring in the first few centimetres of… … Wikipedia
Water cycle — The Earth s water is always in movement, and the water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the Earth. Since the water cycle is truly a cycle, there is no… … Wikipedia
Sustainability — Achieving sustainability will enable the Earth to continue supporting human life as we know it. Blue Marble NASA composite images: 2001 (left), 2002 (right). See also: Sustainable development Sustainability is the capacity to endure. For humans,… … Wikipedia
Oxygen cycle — The oxygen cycle. The Oxygen cycle is the biogeochemical cycle that describes the movement of oxygen within its three main reservoirs: the atmosphere (air), the total content of biological matter within the biosphere (the global sum of all… … Wikipedia
Sidharth Kaul — Dr Sidharth Kaul , born on September 13, 1952, is a globally renowned scientist in the field of Limnology and conservation management of aquatic ecosystems. He is currently working as an Advisor in the Ministry of Environment and Forest, Central… … Wikipedia
