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National Repository of Grey Literature 4 records found  Search took 0.00 seconds. 
Hodnocení vývoje ichtyofauny v dlouhodobě sledovaných úsecích pstruhových revírů jižních Čech
 HALÁČEK, Josef
The work provides information regarding the current development of fish populations in 30 profiles located in 16 trout fishing grounds in South Bohemia, including possible connections with the method of fishing management, temperature, and flow conditions. The work also includes recommendations regarding changes in approaches to fishery management. It is recommended to open the question of the possibility of effectively regulating fish-eating predators as soon as possible. However, these recommendations can generally be applied to similar trout fishing grounds.
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Comparison of long term values of discharges and concentrations of selected substances in pasture area of Jenín
 KAŇOKOVÁ, Markéta
The aim of this thesis is to evaluate the flow rate in pasture-way cultivated catchment area of Jenin stream and concentrations of nitrates and phosphorus in the stream during the period of 2004 - 2012. For this purpose individual time series of the flow-rate values and concentrations of selected substances were processed. The catchment was divided in two subcatchment areas labeled J1 and J2. The results were compared with the previous ones from the period 1983 - 1985 while the area was used as an arable land .
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Měření průtoku vody stromy metodou tepelné bilance kmene
 Deml, Mirko ; Kučera, J. ; Čermák, J.
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Zhodnocení dlouhodobého vývoje chemismu vody Stropnice v úseku Údolí u Nových Hradů - Petříkov
 Čeřovská, Kateřina ; Pokorný, Jan
Evaluation of long term development of chemical parameters of Stropnice river. In: Pithart,D.: Ecology of alluvial oxbows Natural floodplain (c. 800 ha) of Stropnice river near town Nové Hrady was drained and converted into agricultural land in 1980s. The natural meandring stream was straightened and deepened about 2m under the soil surface level. A high profile of flood plain soil was exposed to mineralisation and water flow from the region was accelerated. Data on water chemistry and flow rates collected before and after the drainage were evaluated. Alkalinity, conductivity, concentrations of base cations have increased after drainage which supports hypothesis that drainage accelerates matter losses from the landscape.
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