Electrofishing Capture Efficiencies for Common Stream Fish Species to Support Watershed-Scale Studies in the Central Appalachians

摘要: Abstract As watershed-scale studies of stream fishes become increasingly common, there is a need for more accurate estimation fish population abundance and size structure with single-pass electrofishing techniques. Capture efficiencies are known to vary considerably across habitats species, yet few have quantified or provided logical framework accounting this variability. Consequently, our objectives were (1) determine which species size-classes within exhibited significant site-to-site variation in efficiency (2) construct models predict species- size-specific capture probability from physicochemical parameters. We used three-pass removal sampling 40 study sites located wadeable streams the Cheat River Tygart Valley watersheds West Virginia. The program MARK was estimate probabilities 12 commonly sampled fishes, assess among-site variability probability, ...