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Longitudinal and vertical spatial gradients in the distribution of fish within a canyon-shaped reservoir

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    SYSNO ASEP0104277
    Document TypeJ - Journal Article
    R&D Document TypeJournal Article
    Subsidiary JOstatní články
    TitleLongitudinal and vertical spatial gradients in the distribution of fish within a canyon-shaped reservoir
    TitlePodélné a vertikální prostorové gradienty v distribuci ryb uvnitř korytovité nádrže
    Author(s) Vašek, Mojmír (HBU-Z)
    Kubečka, J. (CZ)
    Peterka, Jiří (HBU-Z)
    Čech, Martin (HBU-Z)
    Draštík, Vladislav (HBU-Z)
    Hladík, Milan (HBU-Z)
    Prchalová, Marie (HBU-Z)
    Frouzová, Jaroslava (HBU-Z)
    Source TitleInternational Review of Hydrobiology. - : Wiley - ISSN 1434-2944
    Roč. 89, č. 4 (2004), s. 352-362
    Number of pages11 s.
    Languageeng - English
    CountryDE - Germany
    Keywordsfish distribution ; spatial heterogeneity ; reservoirs
    Subject RIVDA - Hydrology ; Limnology
    R&D ProjectsIBS6017004 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
    AnnotationThe spatial distribution of fish was studied in the canyon-shaped Římov Reservoir (CZ). Fish were sampled by Nordic survey gill nets at several offshore areas along the longitudinal reservoir axis. Surveys were done in summer 1999-2003. The total relative fish abundance and biomass (catch per unit effort) decreased considerably from the upstream end of the reservoir toward the dam. Roach (Rutilus rutilus), bleak (Alburnus alburnus) and bream (Abramis brama) comprised the bulk of catches at all areas. Enhanced dominance of bream was observed in the fish assemblage at the uppermost, more eutrophic area of the reservoir. The highest number of fish species and the highest abundance of 0+ fish were found in the tributary area. In the downstream part of the reservoir, gill net surveys along the vertical depth profiles indicated that offshore fish occupied mostly the epilimnion.
    WorkplaceInstitute of Hydrobiology (until 2005)
    ContactVáclava Lavičková, lavickova@hbu.cas.cz, Tel.: 387 775 889
    Year of Publishing2005
Number of the records: 1  

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