Počet záznamů: 1  

Stock-catch analysis of carp recreational fisheries in Czech reservoirs: Insights into fish survival, water body productivity and impact of extreme events

  1. 1.
    0379790 - BC 2013 RIV NL eng J - Článek v odborném periodiku
    Boukal, David S. - Jankovský, Martin - Kubečka, Jan - Heino, M.
    Stock-catch analysis of carp recreational fisheries in Czech reservoirs: Insights into fish survival, water body productivity and impact of extreme events.
    Fisheries Research. 119-120, 20 MAY (2012), s. 23-32. ISSN 0165-7836. E-ISSN 1872-6763
    Grant CEP: GA MŠMT 7F10070
    Grant ostatní: Financial Mechanism of EEA and Norwegian Financial Mechanism(NO) A/CZ0046/2/0029
    Institucionální podpora: RVO:60077344
    Klíčová slova: management * time series * stocking
    Kód oboru RIV: EH - Ekologie - společenstva
    Impakt faktor: 1.695, rok: 2012
    http://www.sciencedirect.com/science/article/pii/S0165783611003687

    In culture-based fisheries, managers strive for high stocking efficiency, the ratio between the total weight of caught and stocked fish. We present a new time series approach to examine the dependence of reported catches on stocking and external events, using data on carp from 14 reservoirs in the Czech Republic. Analyses indicate that stocked carp are typically caught during the year of release or the year after; but also that the mean time lag between stocking and capture increases with reservoir area. External events can be important: major floods in the years 2002 and 2006 were in many reservoirs followed by up to 10-fold increases in catches in subsequent years as carp were washed down from upstream aquaculture and river stretches. In contrast, the “Velvet Revolution” in 1989 had no discernible effect on catches in subsequent years. In conclusion, the proposed method can simultaneously estimate the likely mean survival time of stocked carp and identify the impact of major environmental and societal events on recreational fisheries. The approach thus sheds light on the performance of current stocking practices and could be used to monitor and improve management of culture-based recreational fisheries.
    Trvalý link: http://hdl.handle.net/11104/0210666

     
     
Počet záznamů: 1  

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