05-16-2003, 08:48 PM
"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. (For fractions taken of various portions of the stock, see ""vulnerability."") Also called; catchability coeificient, *force of fishing mortality"
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