Assemblage level monitoring of stream fishes: The relative efficiency of single-pass vs. double-pass electrofishing

Quantifying temporal variability in the metacommunity structure of stream fishes: the influence of non-native species and environmental drivers

“…This amount of sampling effort was found to yield representative samples of fish assemblages in this study area for between-site assemblage comparisons (Sály et al, 2009) and is also comparable with those routinely used elsewhere for the sampling of fish in wadeable streams (Magalhães et al, 2002;Schmutz et al, 2007;Hughes & Peck, 2008). Fish were stored in aerated containers filled with water while fishing, then identified to species level, counted, and released back to the stream.…”

Non-native fish species in Hungarian waters: historical overview, potential sources and recent trends in their distribution

“…In 173 wadeable watercourses (i.e. most of SS, HS, and LS), a 12V battery-powered electrofishing 174 device was used to sample a 150-m long reach at each site by slowly wading upstream and 175 single pass fishing the whole stream width (for more details see: Sály et al, 2009). Non-176 wadeable HR and LR habitats and the Danubian sites were sampled by boat electrofishing 177 using engine powered devices, slowly moving downstream and electrofishing one (in HR and 178 LR sites) to three (in Danube sites) 500 m long near shore sections (Fig.…”

The role of the electrofishing equipment type and the operator in assessing fish assemblages in a non-wadeable lowland river

“…Required sampling effort was also found to vary depending on the examined assemblage attribute (e.g. species richness and composition, relative abundance) (Kennard et al, 2006;Kanno et al, 2009;Sály et al, 2009; Holtrop et al, 2010). For example, Hughes and Herlihy (2007) and Maret et al (2007) found that shorter sampling distances were required to estimate the index of biotic integrity versus species richness.…”

“…Cao et al, 2001;Kennard et al, 2006;Fisher and Paukert, 2009;Sály et al, 2009). For sampling fish assemblages a variety of methods are available (Murphy and Willis, 1996).…”

“…time, staff and expenditure). For example, the relative performance of single-versus multiple-pass electrofishing was compared over a wide range of habitats (Penczak, 1985;Meador et al, 2003;Meador, 2005;Kennard et al, 2006;Reid et al, 2008;Sály et al, 2009), or the determination of the optimal sampling length was in the focus of many methodological studies Meador, 2005;Kennard et al, 2006;Hughes and Herlihy, 2007;Fisher and Paukert, 2009;Kanno et al, 2009). It was shown that to attain the same level of representativeness (i.e.…”