Ichtiofauna systemu Widawki. Część II. Dopływy
Journal Title: Roczniki Naukowe Polskiego Związku Wędkarskiego - Year 2009, Vol 22, Issue
Abstract
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 and lamprey species were caught. Roach was the numeric dominant (39%), while gudgeon, stone loach and perch (each 11–15%) were subdominants. The ichthyofauna in the studied rivers was very different. Rich fish assemblages with 23 species, including 8 rheophilic ones, were recorded in the Grabia. In the polluted Rakówka, only one individual of one species, mud loach, was caught, while in the Krasówka (mostly turned into concrete canal) the number of fish was very low as compared to its size. In comparison with earlier studies, in 2003 certain rheophilic and/or migratory species: eel, asp, nase, barbel and vimba were not recorded, and the distribution area of chub became limited. The main reasons are channelization, modifications of hydrological regime by a strip mine, increasing water pollution and construction of the Jeziorsko dam reservoir on the Warta River and smaller impoundments in the Widawka system, all of which are without fish passes.
Authors and Affiliations
Andrzej Kruk, Tadeusz Penczak, Grzegorz Zięba, Lidia Marszał, Henryk Koszaliński, Szymon Tybulczuk, Joanna Grabowska, Michał Ciepłucha, Wanda Galicka
Keywords
Related Articles
- EP ID EP73824
- DOI -
- Views 117
- Downloads 0
Ichtiofauna strumienia Flis na tle cieków nizinnych o podobnej wielkości
In October 2013 electrofishing was conducted at five sites located in the Flis Stream (tributary of the Brda River), which partially flows across the City of Bydgoszcz, in order to determine species composition, abundanc...
Ichtiofauna systemu rzecznego Nysy Kłodzkiej
The ichthyofauna of the Nysa Kłodzka River system (Odra basin) was investigated in years 2000–2004 using electrofishing (standard CPUE methods) at 126 sampling sites. The occurrence of 33 lamprey and fish species (27 nat...
Ichtiofauna systemu Rzeki Iny
The fish fauna of the Ina River system was investigated in 2006–2007. At 54 sampling sites a total of 4912 individuals representing 33 species were collected by electrofishing. The studied tributaries were human-impacted...
Ichtiofauna rzeki Tanew i jej dopływów
The abundance and distribution of fish species were investigated in the River Tanew (San River tributary, Vistula River system). Altogether 1404 individuals representing 23 fish species were collected by electrofishing c...
Ichtiofauna lewobrzeżnych dopływów polsko-białoruskiego odcinka Bugu: systemy rzeczne Włodawki i Hanny
The fish fauna of the Włodawka and Hanna River systems, tributaries of the Polish-Belorussian section of the Bug River, was investigated in August 2009. At 27 sampling sites a total of 1548 individuals representing 27 sp...