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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Fish community Turovecky stream
 NÁDVORNÍK, Petr
The monitoring of the fish guilds in trout fishery of the Turovecky stream was carried out using electrofishing in three preselected localities where the stream has natural character with imperceptible human intervention. The electrofishing was carried out in 2009 and 2010 during April, June and September. The significant factors influencing the species composition in the fishery include store-ponds above the fished out localities and the Turovecky pond located below. The basic ichtyological analysis was carried out after the electrofishing. Acquired results served for the determination of the species abundance, biodiversity and dominance. Altogether were 22 fish species caught in these three localities. Most frequently seen species were Salmo trutta m. fario (112 pieces), Gobio Gobio (51 pieces), endangered species Lota lota (26 pieces), Cottus Gobio (15 pieces) and protected species Lampetra planeri (19 pieces). Abnormal species included Rutilus rutilus (46 pieces) and allochthonous species Pseudorasbora parva (75 pieces) in given localities. The results show the increase of species diversity in the stream by the pond fish and nursery fish species. It is highly probable that new and even invasive fish species have negative impacts on the original stream biota.
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