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National Repository of Grey Literature 4 records found  Search took 0.00 seconds. 
Trends in water quality and trophic level in the drinking reservoir Římov
 Hejzlar, Josef ; Kopáček, Jiří ; Polívka, Josef ; Turek, Jan ; Volková, Alena
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A mass balance study of nutrient sources in the catchment of Orlík Reservoir: 2. Scenario analysis for proposal of strategy to decrease phosphorus runoff]
 Hejzlar, Josef ; Borovec, Jakub ; Polívka, Josef ; Turek, Jan ; Volková, Alena
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A mass balance study of nutrient sources in the catchment of Orlík Reservoir: 1. Principles, methods, results
 Hejzlar, Josef ; Borovec, Jakub ; Mošnerová, Petra ; Polívka, Josef ; Turek, Jan ; Volková, Alena ; Žaloudík, Jiří
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An analysis of the hierarchy of importance of point and diffuse phosphorus sources in the Lomnice River catchment for the eutrophication of Orlík Reservoir
 Hejzlar, Josef ; Polívka, Josef ; Žaloudík, Jiří
P sources in the Lomnice River catchment were analysed in two ways: (i) with a balance method of comparing P fluxes at monitored profiles on streams against the sums of partial P sources within their catchments that was reduced by P retention in the stream network and (ii) with the SIMCAT model of the Environmental Agency UK. Both methods appointed as the main source of high concentrations of total P (i.e., mean and 90% percentile of 0,28 and 0,45 mg/l, respectively, at the mouth of the Lomnice River to Orlík Reservoir in 2004-2008) municipal wastewater discharges and intensive fish pond production (55 and 25 % of P sources in the catchment, respectively) while the exports from agricultural and forested areas were 15 and 3 %, respectively. Scenario calculations by both methods indicated that the level of P concentration in the Lomnice River without eutrophication impacts on the reservoir cannot be achieved without measures both in the purification of wastewaters and fisheries.
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See also: similar author names
2 Polívka, Jan
6 Polívka, Jiří
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