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DEFINITION
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The fraction of a fish population which lives in regions where it is susceptible to fishing during a given fishing season. This fraction receives recruits from or becomes mingled with the non-available part of the stock at other seasons, or in other years. (Any more or less completely isolated segment of the population is best treated as a separate stock.). |
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Ricker, W.E. (1975)
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Other Definitions
The proportion of a stock which is susceptible to fishing. Fish become "available" to fisheries through migration, growth and /or change of behavior (from pelagic to demersal). It an available section of a stock is sufficiently isolated from the rest of the stock, it could be considered a management unit and be managed as such.
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Describes whether a certain kind of fish of a certain size can be caught by a type of gear in an area. |
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Roberts, K.J. et al., 1995, Defining fisheries: a user's glossary. Louisiana State University, Louisiana, USA, 22 p. (Rev.)
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