Слова на букву nucl-proj (16) Fisheries — dictionary
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Слова на букву nucl-proj (16)

nucleus
The initial zone of growth formed within the first year.
nutrient upwelling
Divergence of water currents or the movement of surface water away from land can lead to a \'welling-up\' of deeper water that is usually richer in nutrients than is surface ...
pelagic
Inhabiting surface waters rather than the sea floor. This term is usually applied to free-swimming species such as tunas and sharks; see also demersal and epipelagic.
penaeid prawn
Prawns of the infraorder Penaeidea. This infraorder includes the bulk of the prawns taken in commercial quantities in Australia. Female penaeid prawns release their eggs directly ...
pieces
Individual items, as in the expression "two dollars a piece". Individual fish.
plankton
The collection of small or microscopic organisms, including algae and protozoans, that float or drift in great numbers in fresh or salt water, especially at or near the surface, ...
plus growth
Translucent growth forming on the edge of the otolith; not counted in the age class designation.
pole-and-line fishing
(poling) Also called pole-and-live-bait fishing, involves attracting schools of fish to the vessel with live or dead bait, then getting them into a feeding frenzy with more bait ...
population
See stock.
population structuring
Composition of a population in terms of size, stock (genetic or regional), age class, sex, etc.
potential yield
See long-term potential yield.
precautionary principle
Where there are threats of serious irreversible environmental damage, lack of full scientific certainty should not be used as a reason for postponing measures to prevent ...
precision
A measure of reproducibility; in age determination it relates to the variability between or within readers.
production
1. The total elaboration of new body substance in a stock in a unit of time, irrespective of whether or not it survives to the end of that time. Also called: net production; ...
productivity
When applied to fish stocks the term productivity gives an indication of the birth, growth and death rates of a stock. A highly productive stock is characterised by high ...
projection
With the help of a mathematical model as a numerical representation of the population, a prediction of what may happen in the future under a variety of conditions.


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