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

Fisheries — dictionary. . 2004.

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  • surplus production — Production of new weight by a fishable stock, plus recruits added to it, less what is removed by natural mortality. This is usually estimated as the catch in a given year plus the increase in stock size (or less the decrease). Also called:… …   Fisheries — dictionary

  • 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). As a stock is… …   Dictionary of ichthyology

  • surplus production — Inherent productivity of a fish stock that can be harvested on a sustainable basis. Based on the theory that, at large stock size, reproductive rates and rate of stock growth are slowed by self regulating mechanisms, and that stock growth rates… …   Fisheries — dictionary

  • surplus production model — an estimate of the catch in a given year and the change in stock size. The stock size could increase or decrease depending on new recruits and natural mortality. A surplus production model estimates the natural increase in fish weight or the… …   Dictionary of ichthyology

  • surplus production model — Mathematical representation of the way a stock of fish responds to the removal of its individuals (e.g. by fishing) …   Fisheries — dictionary

  • instantaneous rate of surplus production — Equal to rate of growth plus rate of recruitment less rate of natural mortality all in terms of weight and on an instantaneous basis. In a balanced or equilibrium fishery, this increment replaces what is removed by fishing, and rate of surplus… …   Fisheries — dictionary

  • instantaneous rate of surplus production — Equal to rate of growth plus rate of recruitment less rate of natural mortality all in terms of weight and on an instantaneous basis. In a balanced or equilibrium fishery, this increment replaces what is removed by fishing, and rate of surplus… …   Fisheries — dictionary

  • instantaneous rate of surplus production — equal to rate of growth plus rate of recruitment less rate of natural mortality all in terms of weight and on an instantaneous basis. In a balanced or equilibrium fishery, this increment replaces what is removed by fishing, and rate of surplus… …   Dictionary of ichthyology

  • annual surplus production — the assumption in fisheries that there is a biomass removable without changing population size …   Dictionary of ichthyology

  • Surplus product — Part of a series on Marxism …   Wikipedia

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