Abstract
Cooling waters of the Oslavany power station show a depressive effect on the species diversity of mayfly nymphs. Only seven of 35 taxons found in the study area occurred in all localities. In the warmed stretch of the river, the abundance and biomass of mayfly nymphs as well as the production of the most important speciesPotamanthus luteus decreased; a gradual regeneration of the disturbed mayfly population could be observed downstream. In Locality 5, situated 3.5 km downstream from the mouth of cooling waters, the species diversity, abundance, and biomass of mayflies were 69, 30, and 66 per cent, resp., of values found in Locality 1 with natural temperatures; the production ofPotamanthus luteus was 70 per cent of that found in Locality 1.
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Obrdlík, P., Adámek, Z. & Zahrádka, J. Mayfly fauna (Ephemeroptera) and the biology of the species Potamanthus luteus (L.) in a warmed stretch of the Oslava River. Hydrobiologia 67, 129–140 (1979). https://doi.org/10.1007/BF00126713
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DOI: https://doi.org/10.1007/BF00126713