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Estimating sampling bias when using electrofishing to catch stone loach

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Point abundance sampling, using electrofishing, for stone loach Barbatula barbatula in two habitats, riffle and pool, showed that there was no difference in density between the two habitats. The density of fish increased significantly (1·8 fold; P < 0·001) when the substratum of small cobbles (128–256 mm) was removed and electrofishing repeated.
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Keywords: Barbatula barbatula; benthic fish; electrofishing; sampling bias; stone loach

Document Type: Research Article

Affiliations: Laboratoire Dynamique de la Biodiversité, U.M.R 5172, C.N.R.S, Université Paul Sabatier, 118 Route de Narbonne, F 31062 Toulouse Cedex 4, France

Publication date: 2005-02-01

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