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
Related Articles
- EP ID EP72243
- DOI 10.12823/sapaa.0860-648X.15001
- Views 143
- Downloads 0
Ichtiofauna systemu Widawki. Część II. Dopływy
Nine streams in the Widawka (Warta) River system, including the Krasówka, Rakówka, Pilsia, Chrząstawka and Grabia Rivers, were electrofished at 36 sites in summer 2003. Altogether 5003 individuals representing 26 fish an...
Porównanie efektów stosowania przysadki mózgowej karpia (CPH), Ovopelu i Ovaprimu w kontrolowanym rozrodzie jazi Leuciscus idus (L.) wychowanych w stawach karpiowych
The aim of this paper is to present the results the artificial reproduction of pond-reared fourth generation of ide Leuciscus idus (L.) females fed on three hormonal preparations: carp pituitary homogenate, Ovopel, and O...
Ocena możliwości naturalnego rozrodu troci wędrownej Salmo trutta m. trutta L. w środkowym fragmencie dorzecza rzeki Łeby
From July 2007 to December 2008, a study to determine the availability of the middle part of the Łeba River basin (North Poland) for sea trout Salmo trutta m. trutta L. spawning grounds and spawning redds was conducted....
Wpływ stopniowej poprawy jakości wody w rzece Ner na regenerację ichtiofauny
The Ner River (largest right-side tributary of the middle Warta River, Odra River system) was electrofished at 10 sites during four sampling terms (2000, 2002, 2004, 2005). The quality of water in the river, especially i...
Ichtiofauna dorzecza Motławy
The fish fauna composition was investigated in the Motława River system by the electrofishing method from August to October 2010. A total of 6196 fish and lampreys individuals representing 31 species were captured in 57...