Biomass

1. The cell mass produced by a population of living organisms. 2. The organic mass that can be used either as a source of energy or for its chemical components. 3. All the organic ...

biomass

Forest products; Forest engineering & harvesting

Total woody material in a forest. Refers to both merchantable material and material left following a conventional logging operation. In the broad sense, all of the organic ...

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 ...

biomass

Fishing; Fish farming

Measure of the quantity, usually by weight in pounds or metric tons (2,205 pounds = 1 metric ton), of a stock at a given time.

brackish

Fishing; Fish farming

Water that part-way between freshwater and marine. A number of species prefer partly-salty water.

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Industry/Domain: History Category: World history

La Rochelle, Siege of

Huguenot stronghold on the west coast of France, besieged by Cardinal Richelieu for 15 months in 1627–28. Three-quarters of the population died of ...