Ichtiofauna Dzikiej Orlicy (dorzecze Łaby, Polska) – dziesięć lat później
Journal Title: Roczniki Naukowe Polskiego Związku Wędkarskiego - Year 2015, Vol 28, Issue
Abstract
The work is a continuation of a monitoring study, started in 2003–2005, of the ichthyofauna of the Dzika Orlica River, which along the first 33 km of its course forms a natural border between Poland and the Czech Republic. In that section, the river flows through areas protected under the European Natura 2000 network. During the research carried out in 2013 and 2014 electrofishing was performed in 14 sites. Among the 10 species recorded in the river, brook lamprey, brown trout and bullhead dominated in abundance, biomass and frequency of occurrence. Because the river flows through protected areas, the ichthyofauna is mainly affected by natural factors and minimally affected by fly fishing. As a result, fish populations there consist of only low numbers of brook trout and rainbow trout. In comparison with the previous period of study there were no significant differences in abundance of native species and the only new ones are two American species of trout. In the Dzika Orlica, large numbers of two partly protected fish species in Poland (brook lamprey, bullhead) were recorded during the latest monitoring study.
Authors and Affiliations
Andrzej Witkowski, Marcin Popiołek, Jan Kotusz, Krzysztof Wawer, Jacek Stefaniak
Keywords
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- EP ID EP72243
- DOI 10.12823/sapaa.0860-648X.15001
- Views 147
- Downloads 0
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