Relation Between Sport-Fishing Catchability Coefficients and Salmon Abundance
- 1 September 1981
- journal article
- research article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 110 (5) , 585-593
- https://doi.org/10.1577/1548-8659(1981)110<585:rbscca>2.0.co;2
Abstract
Pacific salmon sport‐fishing data without time trends in the catchability coefficient q or in fish abundance N show that q is larger at lower N. This phenomenon causes serious management problems because it creates critical thresholds in population size and fishing effort that can lead to stock extinction. The inverse relation between q and N directly parallels the analogous relation shown by some predators in natural ecosystems.Keywords
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