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Migration permeability of fish pass on the river Blanice in region of urban area Zábrdí
KNÍŽEK, Jonáš
The purpose of my diploma thesis was tracking of new build fish pass on upper part of the Blanice river in cadastral area of Zábrdí.This fish pass is situated in area up stream from road bridge in village Zábrdí.For the data collection it was used a direct fishing of fish by portable electric unit.Direct fishing were carried out on 50 meters section under fish pass and in fish pass itself.Catching of fish was carried out in period from January to October 2008. There was realized total 10 catches .For a evaluation of migration permeability was used 336 pieces from 6 fish species,concretely it was Salmo trutta m. fario, Thymallus thymallus , Cottus gobio , Leuciscus cephalus, Leuciscus leuciscus, Lota lota, which was caught in tracked section of Blanice river ( 50 m section towards body of weir ) and 105 pieces from 4 fish species (Salmo trutta m. fario,Thymallus thymallus , Cottus gobio, Lota lota),caught in a body of fish pass. Of these results specific and size characteristics were determinated.Caught fish was determinated,measured and returned to aquatic environment.
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