Electrofishing Distance Needed to Estimate Fish Species Richness in Raftable Oregon Rivers

By R. Hughes, P. Kaufmann, A. Herlihy, S. Intelmann, S. Corbett, M. Arbogast, R. Hjort. 2002

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Electrofishing Effort Requirements for Assessing Species Richness and Biotic Integrity in Western Oregon Streams (2003, background): “These distances are similar to the 85–100 channel widths reported by Hughes et al. (2002) for estimating the richness of common species in large rivers.”
A Structured Approach for Developing Indices of Biotic Integrity: Three Examples from Streams and Rivers in the Western USA (2007, methodology): “Raft electrofishing was employed near shore for a distance equal to 100 times the average wetted width to collect 95% of the fish species expected (Hughes et al. 2002).”
A review of existing fish assemblage indicators and methodologies (2007, background): “…river reach they belong to, and in particular they must encompass several riffle-pool sequences (or meander wavelength) and represent the variety of habitat types (for example Fausch et al. 1984; Angermeier & Karr 1986; Lyons et al. 1995; Langdon 2001; Hughes et al. 2002; Reynolds et al. 2003).”