Počet záznamů: 1

Tracing possible drivers of synchronously fluctuating species catches in individual logbook data

  1. 1.
    0367139 - BC-A 2012 RIV US eng J - Článek v odborném periodiku
    Jankovský, Martin - Boukal S., David - Pivnička, K. - Kubečka, Jan
    Tracing possible drivers of synchronously fluctuating species catches in individual logbook data.
    Fisheries Management and Ecology. Roč. 18, č. 4 (2011), s. 297-306 ISSN 0969-997X
    Grant CEP: GA MŠk 7F10070
    Grant ostatní: NFM(CZ) A/CZ0046/2/0029
    Výzkumný záměr: CEZ:AV0Z60170517; CEZ:AV0Z50070508
    Klíčová slova: angler preferences * catch statistics * reservoirs * catch per unit effort * time series correlations
    Kód oboru RIV: GL - Rybářství
    Impakt faktor: 1.294, rok: 2011

    For some reservoirs in the Czech Republic, there are conspicuous synchronous fluctuations in catches of different species that might be caused by fishing skills and strategies. This study describes a method that could detect signatures of such phenomena in individual logbooks. It classifies anglers by species reported during1 year and compares the resulting angler groups by group size, fishing effort, catch per unit effort (CPUE) and annual catch. The method is illustrated by data from one reservoir, showing that the number of generalist anglers who caught several species was higher than expected. Generalists also had higher catches and effort but lower CPUE than specialists who caught only one of the species. The results indicate that generalist anglers with a low degree of specialisation and high effort could contribute to long-term correlations in species catches.
    Trvalý link: http://hdl.handle.net/11104/0201910