Stock and recruitment and inversely density-dependent growth of salmon, Salmo salar L., in a Scottish stream |
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Authors: | R Gardiner P Shackley |
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Institution: | SOAFD, Freshwater Fisheries Laboratory, Pitlochry, Perthshire PH16 5LB, U.K. |
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Abstract: | For the 6 years for which detailed data are readily available, estimates of the survival of emergent fry of Atlantic salmon, Salmo salar L., to the first and second autumns at a site on the Shelligan Burn are consistent with the dome-shaped Ricker model with about 11 emergent fry m−2 maximizing recruitment. The data are not satisfactorily fitted by the asymptotic Beverton and Holt model. A possible mechanism, which results from the observed inversely density-dependent growth, is discussed briefly. |
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Keywords: | Salmo salar juveniles population dynamics density-dependence recruitment growth |
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