IDEAS home Printed from https://ideas.repec.org/a/caa/jnlcjs/v49y2004i1id4270-cjas.html
   My bibliography  Save this article

Fish community structure of the middle course of the Bečva River

Author

Listed:
  • J. I Namin

    (Institute of Fisheries and Hydrobiology, Faculty of Agronomy, Mendel University of Agriculture and Forestry, Brno, Czech Republic)

  • P. Spurný

    (Institute of Fisheries and Hydrobiology, Faculty of Agronomy, Mendel University of Agriculture and Forestry, Brno, Czech Republic)

Abstract

Fish communities of the Bečva River were studied in summer and autumn 2000 and 2001. Electric fishing gear (Honda EX 1000, DC 230 V, 0.75-0.9 kW) was used for sampling. Four sampling sites (Grymov 19.6 r. km, Rybáře 35.8 r. km, Hustopeče 50.7 and Choryně 54.7 r. km) were selected. Total of 23 fish species representing 5 families were determined. The family Cyprinidae with 15 species was dominant while Salmonidae, Balitoridae, Percidae and Gadidae were the other recorded families. Species diversity ranged from 9 at Hustopeče to 20 at Grymov localities. The lowest biomass and abundance were observed at Hustopeče locality (28.93 kg/ha and 336 fishes/ha) and the highest at Choryně locality (612.90 kg/ha and 7 367 fishes/ha). Barbus barbus, Chondrostoma nasus and Leuciscus cephalus contributed 87.73-97.55% and 60.5%-87% to total biomass and abundance in different samplings, respectively. The Chondrostoma nasus population was dominated by fish of total length over 300 mm. We believe that river fragmentation, trapping and blockade of fish are the main reasons for this irregular distribution. Index of diversity ranged from 0.811 to 2.05 and equitability index from 0.449 to 0.821. Physical and chemical parameters were also measured, pH value ranged from 7.8 to 9.8, DO (7.62-12.15 mg/l), conductivity (450-639 µS/cm), N-NH4 (0.65-2.39 mg/l), P-PO4 (0.12-0.68 mg/l)and alkalinity (2.55 to 3.40 mg/l).

Suggested Citation

  • J. I Namin & P. Spurný, 2004. "Fish community structure of the middle course of the Bečva River," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 49(1), pages 43-50.
    • Handle: RePEc:caa:jnlcjs:v:49:y:2004:i:1:id:4270-cjas
    DOI: 10.17221/4270-CJAS
    as

    Download full text from publisher

    File URL: http://cjas.agriculturejournals.cz/doi/10.17221/4270-CJAS.html
    Download Restriction: free of charge
    File URL: http://cjas.agriculturejournals.cz/doi/10.17221/4270-CJAS.pdf
    Download Restriction: free of charge
    File URL: https://libkey.io/10.17221/4270-CJAS?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:caa:jnlcjs:v:49:y:2004:i:1:id:4270-cjas. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Ivo Andrle (email available below). General contact details of provider: https://www.cazv.cz/en/home/ .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.