Слова на букву avai-brac (16) Fisheries — dictionary
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Слова на букву avai-brac (16)

availability
1. The fraction of a fish population which lives in regions where it is susceptible to fishing during a given fishing season. This fraction receives recruits from or becomes ...
bait net
A net used to catch bait fish for activities such as longlining and pole-and-line fishing.
basalt
A hard, dense, dark volcanic rock composed chiefly of plagioclase, pyroxene, and olivine, and often having a glassy appearance.
benthic
Associated with the bottom of a water body such as a sea or lake.
benthopelagic
Of, relating to, or living at the bottom of open oceans or seas rather than waters adjacent to land or inland waters.
berried
Female crabs, lobsters, etc. which have eggs attached to the appendages of the underside of the abdomen are described as berried or \'in berry\'.
billfish
Marlins, sailfish, spearfish and swordfish; that is, where the snout is extended into a bill or \'spear\'.
bimodal
See length-frequency distribution.
biodiversity
Biological diversity; variability among living organisms-including genetic diversity, diversity within and between species, and diversity within ecosystems.
biogeographical marine regions
Large regions with distinct seascapes, flora and fauna, where the biota is limited in distribution by differing abiotic conditions such as temperature, salinity, depth, light ...
biological reference points
Indicators or signposts against which the status of a stock can be judged. Two types are often used: based on fishing mortality and based on the sustainability of ...
biomass
Total weight of a stock or of a component of a stock; e.g. spawning biomass is the combined weight of mature animals.
biotone
A zone of transition between province - described by Environment Australia\'s Interim Marine and Coastal Regionalisation for Australia.
biotoxins
Natural toxins produced by organisms, often for use as a defence mechanism.
boat-day
A measure of fishing effort; e.g. 10 vessels in a fishery, each fishing for 50 days, would have expended 500 boat-days of effort.
brackish water
Slightly saline water (between 0.5 and 30 ppm salt), which often occurs in regions where saline ocean waters are mixed with, and diluted by, freshwater sources. Brackish waters ...


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