Y'

Y'
surplus production (production of new weight by a fishable stock, plus recruits added to it, less what is removed by natural mortality. Usually estimated as the catch in a given year plus the increase in stock size or less the decrease (Ricker, 1975). Also called natural increase, sustainable yield, equilibrium catch

Dictionary of ichthyology. 2009.

Игры ⚽ Поможем написать курсовую

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