catchability

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• 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

• 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… …   Dictionary of ichthyology

• catchability — In a general sense, the extent to which a stock is susceptible to fishing; quantitatively, the proportion of the stock removed by one unit of fishing effort …   Fisheries — dictionary

• catchability-led stock collapse — the tendency for small schools of fish to aggregate into larger schools, resulting in a continued high fishing pressure although the total stock has declined. Also called hyperaggregation …   Dictionary of ichthyology

• period of catchability — the time when a given species is permitted to be caught …   Dictionary of ichthyology

• hyperaggregation — catchability led stock collapse (the tendency for small schools of fish to aggregate into larger schools, resulting in a continued high fishing pressure although the total stock has declined) …   Dictionary of ichthyology

• vulnerability — catchability, but usually applied to separate parts of a stock, for example those of a particular size, or those living in a particular part of the range (Ricker, 1975) …   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