1985•North American Journal of Fisheries ManagementRequires access

A Quantitative Method for Sampling Riverine Microhabitats by Electrofishing

Mark B. Bain, John T. Finn, Henry E. Booke

Abstract

An electrofishing device and sampling procedure was developed to sample lotic microhabitats. The device consists of a rectangular electrode frame powered by an alternating current generator. The device was very effective in immobilizing fish within the electrode frame. A time delay between setting and sampling electrode frames permitted a period without disturbance prior to sampling. No significant correlations were found between capture rates and time delays greater than 11 minutes. Consistent results were obtained in repeated sampling of a variety of microhabitats within a single stream reach. The device and sampling procedure allows multispecies abundances to be quantified with regard to discrete units of microhabitat and a priori sampling designs to be used.

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Key concepts: Electrofishing, Sampling (signal processing), Environmental science, Sample (material), River ecosystem, Fish <Actinopterygii>, Frame (networking), Hydrology (agriculture)