Repartition of fish populations in the department of Creuse (France). The geographical contribution of electrofishing in headstreams

Laurent Touchart 1 Yann Clave
1 CEDETE - Centre d'Etudes pour le Développement des Territoires et l'Environnement
Abstract : The department of the Creuse is hydrologically situated in headwaters, which ecologically healthy watercourses allow us to consider as a reference point. Electrofishing is used here in a geographical way in order to chart the repartition of fish species representative of a certain water quality, covering a period of seven years and a vast space of 5600km². Over the years, populations of the least sensitive species (chub and dace) progress towards upstream waters, while the most sensitive species (minnows) regress and only subsist in the headwaters. These species are indicators of a degradation of physicochemical or sedimentary conditions moving upstream.
Keywords : headwaters headstream freshwater fishing European Water Framework Directive cyprinid
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Journal articles
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https://hal-univ-orleans.archives-ouvertes.fr/hal-02088931
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Submitted on : Wednesday, April 3, 2019 - 12:13:56 PM
Last modification on : Thursday, April 4, 2019 - 1:49:01 AM

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Laurent Touchart, Yann Clave. Repartition of fish populations in the department of Creuse (France). The geographical contribution of electrofishing in headstreams. Studia Universitatis “Vasile Goldiș”, Seria Ştiințele Vieţii (Life Sciences Series), Vasile Goldis University Press, 2008, 18, pp.333-338. ⟨hal-02088931⟩

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