The Efficiency of a Direct Current Electric Fishing Method in Trout Streams

Alabaster, J. S.; Hartley, W. G.

doi:10.2307/2149

Cited by 13 publications

(13 citation statements)

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“…Stream depth is one of the main limiting factors in studies based on electrofishing (Alabaster & Hartley ; Pusey et al . ).…”

Section: Discussionmentioning

confidence: 99%

“…The effect of stream depth probably acts together with water conductivity, which is usually considered as the main limiting factor for electrofishing methods (Alabaster & Hartley ; Pusey et al . ).…”

Section: Discussionmentioning

confidence: 99%

“…; Snyder ). It is, however, sensitive to low water conductivity (Alabaster & Hartley ; Penczak et al . ).…”

Section: Introductionmentioning

confidence: 99%

“…Several studies have tested the effect of water conductivity on fishing efficiency, and, although some authors consider electrofishing inefficient under values lower than 60 μS cm −1 (Pusey et al . ; Beaumont ), others found no correlation between water conductivity and fishing efficiency from 30 to 400 μS cm −1 (Alabaster & Hartley ; Penczak et al . ; Mazzoni et al .…”

Section: Introductionmentioning

confidence: 99%

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Electrofishing efficiency in low conductivity neotropical streams: towards a non‐destructive fish sampling method

Allard

Grenouillet

Khazraïe³

et al. 2014

Fisheries Management Eco

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Rotenone sampling is the most efficient method for assessing the fish assemblage structure and species abundance of low conductivity Amazonian streams. It does, however, cause fish mortality and disturb aquatic ecosystem. The aim of this study was to search for a non‐destructive alternative. The efficiency of electrofishing was compared against complete removal using rotenone. This procedure was repeated in 12 streams dispersed throughout French Guiana to test for environmental and biological effects such as water conductivity, stream depth, fish family membership and body size. This study revealed that the efficiency of electrofishing was influenced by stream conductivity and stream depth, but not by fish family or body size. The electrofishing method might constitute an efficient alternative to using rotenone in smaller streams (below 25‐cm depth and above 43 μS cm−1), whereas in deeper and/or slightly conductive streams, rotenone still remains the only method able to provide a quick and comprehensive picture of the fish assemblage.

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“…Stream depth is one of the main limiting factors in studies based on electrofishing (Alabaster & Hartley ; Pusey et al . ).…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…; Snyder ). It is, however, sensitive to low water conductivity (Alabaster & Hartley ; Penczak et al . ).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Electrofishing efficiency in low conductivity neotropical streams: towards a non‐destructive fish sampling method

Allard

Grenouillet

Khazraïe³

et al. 2014

Fisheries Management Eco

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“…However, the effects of a 1 °C temperature increase on capture efficiency are likely to be far smaller than the declines observed both salmon (50%) and trout juveniles (67%) in this study: the conductivity of stream water is reduced by only 2% per °C (Bohlin et al , 1989). Alabaster & Hartley (1962) described the impact of conductivity on the percentage of a fish population caught by direct current electrofishing according to the regression equation y =0.27 x –9.6, where y is the percentage catch and x is the conductivity (μS cm −1 ) of the water. In 2003, the in situ conductivity was measured across streams within the Wye catchment and ranged from 161 to 352 μS cm −1 .…”

Section: Discussionmentioning

confidence: 99%

Juvenile salmonid populations in a temperate river system track synoptic trends in climate

Clews

Durance

Vaughan

et al. 2010

Global Change Biology

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. Juvenile salmonid populations in a temperate river system track synoptic trends in climate. Global Change Biology, Wiley, 2010, 16 (12) Widespread decline among Atlantic salmon (Salmo salar) and brown trout (Salmo trutta) over recent decades have been linked to pollution, exploitation and catchment modification, but climate change is increasingly implicated. We used long-term, geographically extensive data from the Welsh River Wye, formerly a major salmon river, to examine whether climatically-mediated effects on juveniles (> 0+) might contribute to population change.Populations of Atlantic salmon and brown trout fell across the Wye catchment respectively by 50% and 67% between 1985 and 2004, but could not be explained by pollution because water quality improved during this time.Stream temperatures, estimated from calibrations against weekly air temperature at 8 sites, increased by 0.5-0.7 °C in summer and 0.7-1.0 °C in winter, with larger tributaries warming more than shaded headwaters. Rates of winter warming were slightly greater after accounting for the effect of the North Atlantic Oscillation (1.1-1.4 °C). However, warming through time was smaller than measured variations among tributaries, and alone was insufficient to explain variations in salmonid density. Instead, population variations were best explained in multi-level mixed models by a synoptic variate representing a trend towards hotter, drier summers, implying interactions between climate warming, varying discharge and fluctuatations in both brown trout and salmon. geographically extensive data from the Welsh River Wye, formerly a major salmon river, 17 to examine whether climatically-mediated effects on juveniles (> 0+) might contribute to 18 population change. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 for the UK suggest that altered summer flow and increasing summer temperatures could 36 exacerbate losses further in these species, and we advocate management actions that 37 combine reduced abstraction with enhanced riparian shading. 38 39

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2016

Electricity in Fish Research and Management

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The Efficiency of a Direct Current Electric Fishing Method in Trout Streams

Cited by 13 publications

References 1 publication

Electrofishing efficiency in low conductivity neotropical streams: towards a non‐destructive fish sampling method

Electrofishing efficiency in low conductivity neotropical streams: towards a non‐destructive fish sampling method

Juvenile salmonid populations in a temperate river system track synoptic trends in climate

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