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Application of diffusive samplers for ambient ozone measurements
Cepáková, Šárka ; Hůnová, Iva (advisor) ; Přibil, Rudolf (referee)
Diffuse sampling is based on free flow of analyte molecules from the sampled medium to a collecting medium. This method is used for quantifying ambient, gaseous air pollutant concentrations. Diffuse monitoring offers a geographical concentration distribution. It is available choice for measuring ambient ozone. Today, tropospheric ozone belongs to the most problematic pollutants in the atmosphere. And thatś why it is useful to monitor spatial and temporal variations in the amount of this pollutant. The offer of diffuse samplers for monitoring ambient ozone concentration is wide enough - the most widely used samplers are for example Gradko, Ogawa, Radiello or IVL.
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Assessment of sediments from the Vuznice resevoir (PLA Krivoklatsko) for agricultural purposes
Cepáková, Šárka ; Benešová, Libuše (advisor) ; Komínková, Dana (referee)
The Vůznice Reservoir is located in the Protected Landscape Area Křivoklátsko. The thesis took advantage of the special possibilities to sample bottom sediment from the drained reservoir's space. The Vůznice Reservoir is discharged only exceptionally. Concentrations of heavy metals were evaluated in the sediments' samples. Given values were compared with pollution limits under current legislation of the Czech Republic for possible application of sediments on agricultural land resources. In addition, the values were compared with the U.S. EPA limits, particularly with PEC and TEC. Selected heavy metals meet the required limits of Decree No. 257/2009 Coll. placed on the sediment. Key words: toxic metals, Vuznice, bottom sediment, application of dredged sediments on land
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Dynamics of dissolved organic matter depending on the activity of ants in coniferous temperate forest
Vacířová, Anna ; Jandová, Kateřina (advisor) ; Cepáková, Šárka (referee)
5 Abstrakt Soil organic matter is the largest reservoir of carbon in terrestrial ecosystems, and its functionally important component is dissolved organic matter. Its composition and changes in this composition during the vegetation season affect the vegetation, the activity of the organisms in the soil and the formation of soil organic matter. Local bio-hotspots such as anthills create spatial heterogeneity of the soil solution composition. In my work I analyzed cold water (CWE) and hot water (HWE) soil extracts, which I took in different distances from the anthill, in three soil horizons (O, A, B) three times during one vegetation season. I measured contents of carbon (C), nitrogen (N), C: N ratio and the parameter SUVA254 and SUVA280. The labile C and N content varied with the distance from the anthill. The C and N content with the distance from the anthill at O horizon increases, decreases in A and B. C: N ratio was the highest in the A horizon, but during the season the differences were not so significant. The smallest content of C and N was in April, the highest in July. The SUVA parameter in O and B decreases with distance from anthill, in A on the other hand it has risen. Ants have an effect not only on the quantity but also on the quality of the DOM, at the same time creating heterogeneity of DOM...
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Dynamics of dissolved organic matter depending on the activity of ants in coniferous temperate forest
Vacířová, Anna ; Jandová, Kateřina (advisor) ; Cepáková, Šárka (referee)
5 Abstrakt Soil organic matter is the largest reservoir of carbon in terrestrial ecosystems, and its functionally important component is dissolved organic matter. Its composition and changes in this composition during the vegetation season affect the vegetation, the activity of the organisms in the soil and the formation of soil organic matter. Local bio-hotspots such as anthills create spatial heterogeneity of the soil solution composition. In my work I analyzed cold water (CWE) and hot water (HWE) soil extracts, which I took in different distances from the anthill, in three soil horizons (O, A, B) three times during one vegetation season. I measured contents of carbon (C), nitrogen (N), C: N ratio and the parameter SUVA254 and SUVA280. The labile C and N content varied with the distance from the anthill. The C and N content with the distance from the anthill at O horizon increases, decreases in A and B. C: N ratio was the highest in the A horizon, but during the season the differences were not so significant. The smallest content of C and N was in April, the highest in July. The SUVA parameter in O and B decreases with distance from anthill, in A on the other hand it has risen. Ants have an effect not only on the quantity but also on the quality of the DOM, at the same time creating heterogeneity of DOM...
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Soil chemical and microbial properties in reclaimed and unreclaimed grasslands
Čížková, Barbora ; Frouz, Jan (advisor) ; Cepáková, Šárka (referee)
For successful restoration of unstable ecosystems in the dumps recreating a fully functioning lan dis needed. Dump substrates often have poor grain composition, extreme pH or are toxic. They also lack important recent organic matter, which improves the overall quality of the soil and is therefore necessary for the development of quality and fertile soil. Therefore, restoration of ecosystems in the dumps is initially very slow. A number of reclamation measures was invented to accelerate this process - for example, heaping up of topsoil to dump substrates. With organic matter present in the topsoil soil formation is faster and often with their physical and chemical properties differ significantly from then developed soils. There has already been number of works written considering development of soils on the Velká podkrušnohorská výsypka so far, none of which, however, did not affect grasslands. The aim of this work was to obtain complete information about the development of chemical and microbial properties of soils that were recultivted by reclaimed topsoil and grassed and then to compare them with developments in the areas of overgrown spontaneous succession. It was found that the total carbon content increases with time only in the reclaimed areas and maximum of the increase is in the depth of...
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Assessment of sediments from the Vuznice resevoir (PLA Krivoklatsko) for agricultural purposes
Cepáková, Šárka ; Benešová, Libuše (advisor) ; Komínková, Dana (referee)
The Vůznice Reservoir is located in the Protected Landscape Area Křivoklátsko. The thesis took advantage of the special possibilities to sample bottom sediment from the drained reservoir's space. The Vůznice Reservoir is discharged only exceptionally. Concentrations of heavy metals were evaluated in the sediments' samples. Given values were compared with pollution limits under current legislation of the Czech Republic for possible application of sediments on agricultural land resources. In addition, the values were compared with the U.S. EPA limits, particularly with PEC and TEC. Selected heavy metals meet the required limits of Decree No. 257/2009 Coll. placed on the sediment. Key words: toxic metals, Vuznice, bottom sediment, application of dredged sediments on land
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Application of diffusive samplers for ambient ozone measurements
Cepáková, Šárka ; Přibil, Rudolf (referee) ; Hůnová, Iva (advisor)
Diffuse sampling is based on free flow of analyte molecules from the sampled medium to a collecting medium. This method is used for quantifying ambient, gaseous air pollutant concentrations. Diffuse monitoring offers a geographical concentration distribution. It is available choice for measuring ambient ozone. Today, tropospheric ozone belongs to the most problematic pollutants in the atmosphere. And thatś why it is useful to monitor spatial and temporal variations in the amount of this pollutant. The offer of diffuse samplers for monitoring ambient ozone concentration is wide enough - the most widely used samplers are for example Gradko, Ogawa, Radiello or IVL.
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Final report about research in Sokolov post mining sites in 2014 based on agreement between ENKI ops and Institute of Soil Biology BC CAS
Frouz, Jan ; Dušovská, O. ; Bujalský, L. ; Jirka, V. ; Zemek, František ; Čížková, B. ; Vicena, J. ; Kukla, J. ; Cepáková, Šárka
Report summarises results of research about primary production, soil biota, soil water regime, and soil chemistry in post mining sites operated by Sokolovska Uhelna mining company based on agreement with ENKI ops.
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