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Over 25 years rod catches of Atlantic salmon Salmo salar increased proportionately as stock size increased (r 2 =0.581, P< 0.001), with no overall trend between exploitation rate and stock size (r 2 =0.016, P> 0.5). On a 15 year sub-set of these data annual effort (P=0.804) and flow (P=0.339) had little significance relative to stock size (P< 0.01) on variation in rod catches...
An abundance index for 0+ Atlantic salmon was based on semi-quantitative electrofishing estimates at 137 sites in typical juvenile habitat throughout the River Bush (N. Ireland). 0+ abundance was linearly related to total smolt numbers migrating through a downstream trap in subsequent years (r 2 =0.716,P<0.001), suggesting a high degree of predictive ability. This predictive ability decreased...
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