Počet záznamů: 1

The influence of diel period on fish assemblage in the unstructured littoral of reservoirs

  1. 1.
    0366518 - BC-A 2012 RIV US eng J - Článek v odborném periodiku
    Říha, Milan - Kubečka, Jan - Prchalová, Marie - Mrkvička, Tomáš - Čech, Martin - Draštík, Vladislav - Frouzová, Jaroslava - Hohausová, Eva - Jůza, Tomáš - Kratochvíl, Michal - Peterka, Jiří - Tušer, Michal - Vašek, Mojmír
    The influence of diel period on fish assemblage in the unstructured littoral of reservoirs.
    Fisheries Management and Ecology. Roč. 18, č. 4 (2011), s. 339-347 ISSN 0969-997X
    Grant CEP: GA ČR(CZ) GA206/07/1392; GA MZe(CZ) QH81046
    Výzkumný záměr: CEZ:AV0Z60170517
    Klíčová slova: beach seining * diel migration * sampling * species composition * Římov Reservoir
    Kód oboru RIV: EG - Zoologie
    Impakt faktor: 1.294, rok: 2011

    Diel changes in littoral fish assemblage were studied in four reservoirs in the Czech Republic (Central Europe). The sampling was performed by beach seining in an unstructured littoral zone. Perch, Perca fluviatilis L., roach, Rutilus rutilus (L.), bream, Abramis brama (L.), carp, Cyprinus carpio L., ruffe, Gymnocephalus cernua (L.), pikeperch, Sander lucioperca (L.), eel, Anguilla anguilla (L.) and A. brama · R. rutilus hybrids exhibited higher densities at night. Only bleak, Alburnus alburnus (L.) exhibited higher densities during the day. The number of species was higher in night hauls, and mean body size of roach and bleak was also higher at night. Diel changes in fish densities resulted in the change in species composition between day and night. The study has implication for the sampling design to assess littoral fish assemblages using beach seine netting and recommends night sampling for a representative assessment or sampling during both diel periods for a robust assessment.
    Trvalý link: http://hdl.handle.net/11104/0201487