Smallmouth Bass Recruitment Variability and Its Relation to Stream Discharge in Three Virginia Rivers
作者： Scott M. Smith , John S. Odenkirk , Stephen J. Reeser
DOI: 10.1577/M04-047.1
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摘要: Abstract The recruitment of smallmouth bass Micropterus dolomieu in rivers commonly exhibits a high degree annual variation. We examined three Virginia with the objectives determining magnitude variability, identifying functional index for measuring year-class strength, and examining relationship between stream discharge success. Recruitment study varied by as much an order among years. electrofishing catch per unit effort age-0 September–November was reliable measure strength. success significantly related to mean June streamflow using nonlinear model, strongest year-classes produced years moderate flows. Mean reasonably predicted abundance fall. Our data suggest that during immediately after spawning could be critical recru...
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