catchability coefficient


catchability coefficient
force of fishing mortality (the extent to which a stock is susceptible to fishing; quantitatively, the proportion of the stock removed by a defined unit of fishing effort. In pelagic fishes, an inverse function of stock biomass. When it is 0.01 or less it can be used as an instantaneous rate in measuring population change. Also called catchability)

Dictionary of ichthyology. 2009.

Look at other dictionaries:

  • catchability — The fraction of a fish stock which is caught by a defined unit of the fishing effort. When the unit is small enough that it catches only a small part of the stock 0.01 or less it can be used as an instantaneous rate in computing population change …   Fisheries — dictionary

  • catchability — The fraction of a fish stock which is caught by a defined unit of the fishing effort. When the unit is small enough that it catches only a small part of the stock 0.01 or less it can be used as an instantaneous rate in computing population change …   Fisheries — dictionary

  • catchability — the extent to which a stock is susceptible to fishing, the part of a stock that is caught over a defined unit of time or fishing effort; quantitatively, the proportion of the stock removed by a defined unit of fishing effort. In pelagic fishes,… …   Dictionary of ichthyology

  • EconMult — is a general fleet model to be used in fisheries modelling. EconMult has been developed since 1991 as a part of the Multispecies management programme by the Norwegian Research Council at the Norwegian College of Fishery Science (University of… …   Wikipedia

  • force of fishing mortality — the extent to which a stock is susceptible to fishing; quantitatively, the proportion of the stock removed by a defined unit of fishing effort. In pelagic fishes, an inverse function of stock biomass. When it is 0.01 or less it can be used as an… …   Dictionary of ichthyology

  • fishing intensity — 1) effective fishing effort 2) fishing effort per unit area (must be proportional to fishing mortality through the relation F q(f/A) where (f/A) is the fishing intensity and “q” the catchability coefficient) 3) effectiveness of fishing …   Dictionary of ichthyology

  • intensity — 1) effective fishing effort 2) fishing effort per unit area (must be proportional to fishing mortality through the relation F q(f/A) where (f/A) is the fishing intensity and “q” the catchability coefficient) 3) effectiveness of fishing …   Dictionary of ichthyology

  • Q — Quaternary geological period abbreviation for the fraction of a fish stock which is caught by a defined unit of the fishing effort. When the unit is small enough that it catches only a small part of the stock (0.01 or less) it can be used as an… …   Dictionary of ichthyology


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