Nitrification

Nitrification

The process by which ammonia is changed to nitrite, then nitrate, and finally nitrogen gas. See nitrogen cycle.

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Industry/Domain: Fishing
Category: Fish farming
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nitrification

Weather; Meteorology

The process of converting reduced nitrogen (as ammonia or ammonium) to its more oxidized forms (nitrite or nitrate ions). It is a two-step process, with each step carried out by ...

nitrification

Biotechnology; Genetic engineering

A chemical process in which nitrogen in plant and animal wastes and dead remains is oxidized, first to nitrites and then to nitrates.

nitrification

Earth science; Physical oceanography

The process by which ammonia formed by the bacterial decay of marine organisms or excreted by marine animals is oxidized to nitrite and then nitrate. It is inhibited by light and ...

nitrification

Earth science; Soil science

Biological oxidation of ammonium to nitrite and nitrate, or a biologically induced increase in the oxidation state of nitrogen.

nitrification

Chemistry; Weather; Atmospheric chemistry

The conversion of nitrogen organic compounds to inorganic compounds of nitrogen. This conversion is accomplished, in the main, by bacteria.

nitrification

Agriculture; Rice science

The biochemical oxidation of ammonium (NH4+) to nitrate (NO3-).

bycatch

Fishing; Fish farming

Bycatch (or by-catch) is the portion of a fishing catch caught unintentionally in a fishery, in addition to the targeted catch, and discarded as unwanted or commercially unusable.

fishery

Fishing; Fish farming

The industry or occupation devoted to the catching, processing, or selling of fish, shellfish, or other aquatic animals.

biological filtration

Fishing; Fish farming

These filters make use of bacteria to break down wastes in the water into substances which are less toxic to the inhabitants, in a process known as the nitrogen cycle. Examples ...

biological reference points

Fishing; Fish farming

Fishing mortality rates that may provide acceptable protection against growth overfishing and/or recruitment overfishing for a particular stock. They are usually calculated from ...