Relationship between horizontal hydroacoustic stock estimates and gillnet catches of surface-oriented fish in shallow Lake Balaton (Hungary)

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Éditeur(s) EDP Sciences
Identifiant documentaire 11-dkey/10.1051/kmae/2012012
Identifiant OAI oai:edpsciences.org:dkey/10.1051/kmae/2012012
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Auteur(s): Á.I. György,I. Tátrai,A. Specziár
Mots clés gillnet side-looking hydroacoustics comparability of data Alburnus alburnus shallow lake filet maillant hydroacoustique latérale comparabilité des données Alburnus alburnus lac peu profond
Date de publication 13/06/2012
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Source https://doi.org/10.1051/kmae/2012012
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We examined whether gillnetting and hydroacoustics provide comparable relative fish density and fish size distribution estimates in the uppermost water layer of a shallow turbid lake and whether the inclusion of environmental and stock parameters could improve comparability of data between different gears. According to gillnetting, most fish shorter than 14 cm in total length were Alburnus alburnus, and most fish longer than 14 cm were Pelecus cultratus. Size distributions and median sizes obtained from gillnetting and acoustics differed. Pure acoustics-derived density estimates accounted for only
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