English-russian biological dictionary. 2013.
limiting nutrient — an essential nutrient in an aquaculture feed at low concentration, resulting in a deficiency … Dictionary of ichthyology
Nutrient — cycle in the oceans A nutrient is a chemical that an organism needs to live and grow or a substance used in an organism s metabolism which must be taken in from its environment.[1] They are used to build and repair tissues, regulate body… … Wikipedia
Nutrient cycle — … Wikipedia
limiting — adjective Date: 1644 1. a. functioning as a limit ; restrictive < limiting value > b. being an environmental factor (as a nutrient) that limits the population size of an organism 2. serving to specify the application of the modified noun < this… … New Collegiate Dictionary
Eutrophication — The eutrophication of the Potomac River is evident from its bright green water, caused by a dense bloom of cyanobacteria. Eutrophication (Greek: eutrophia healthy, adequate nutrition, development; German: Eutrophie) or more precisely… … Wikipedia
Chemostat — Stirred bioreactor operated as a chemostat, with a continuous inflow (the feed) and outflow (the effluent). The rate of medium flow is controlled to keep the culture volume constant. A chemostat (from Chemical environment is static) is a… … Wikipedia
Nonpoint source pollution — Muddy river polluted by sediment. Photo courtesy of United States Geological Survey. Nonpoint source (NPS) pollution refers to both water and air pollution from diffuse sources. Nonpoint source water pollution affects a water body from sources… … Wikipedia
Sewage treatment — The objective of sewage treatment is to produce a disposable effluent without causing harm to the surrounding environment, and also prevent pollution.[1] Sewage treatment, or domestic wastewater treatment, is the process of removing contaminants… … Wikipedia
Liebig's law of the minimum — Liebig s Law of the Minimum, often simply called Liebig s Law or the Law of the Minimum, is a principle developed in agricultural science by Carl Sprengel (1828) and later popularized by Justus von Liebig. It states that growth is controlled not… … Wikipedia
Denitrification — Nitrogen cycle. Denitrification is a microbially facilitated process of nitrate reduction that may ultimately produce molecular nitrogen (N2) through a series of intermediate gaseous nitrogen oxide products. This respiratory process reduces… … Wikipedia
Iron fertilization — For information on ocean fertilization schemes not involving iron, see ocean nourishment. An oceanic phytoplankton bloom in the South Atlantic Ocean, off the coast of Argentina covering an area about 300 miles (480 km) by 50 miles Iron… … Wikipedia
