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Process of destratification at Brno dam reservoir
Marek, Tomáš ; Maršálková, Eliška (referee) ; Palčík,, Jiří (advisor)
This thesis deals with the process of destratification at the Brno dam reservoir within the activities of a larger project "Clean Svratka", aimed to improvement of water quality in the catchment area upstream the Brno dam. At the Brno dam the project "Implementation of measures at the Brno Reservoir" has been in progress for the third year. Its aim is the proposal and implementation of measures to suppress the cyanobacteria mass development in the dam lake. One of the key measures is aeration and mixing of dam water through a 20 aeration tower. The theoretical part of this thesis focuses on seasonal conditions in the dam lake, the technology suitable for destratification and aeration and possibilities of their use. In the practical part of the thesis the seasonal destratification and the impact of meteorological conditions are monitored.
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Flow cytometric method to monitor the viability of microbial populations in drinking water
Maršálková, Eliška ; Makieieva, Y. ; Kovar, K.
The microbiome of natural water from an artesian well (i.e., bottled water of this origin) was characterised using a method combining staining with fluorescence dyes and cell counting by flow cytometry. These investigations revealed the microbial fingerprint of such high-quality drinking water (i.e., containing about 14 thousands cells per mL) as well as changes in total cell count (TCC), dead cell count (DCC) and the ratio of living cells with high (HNA) and low (LNA) nucleic acid content. Hydrogen peroxide, ozone, and free radicals were produced in water exposed to CaviPlazma, while cell viability was reduced, both within the original microbiome and in an inoculated laboratory culture of E. coli. In this treated water, microbial cells died, total cell counts decayed by lysis and dissolved assimilable carbon (AOC) increased. Unique findings from these laboratory experiments facilitate our understanding of the effects of oxidation processes on the viability of microorganisms as well as the potential future use of these technologies for drinking water disinfection and protection against regrowth of possible contaminants.
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Use of the organism Daphnia magna in a multigenerational ecotoxicity test
Klasová, Kristýna ; Maršálková, Eliška (referee) ; Zlámalová Gargošová, Helena (advisor)
This bachelor thesis deals with the multigenerational effect of microparticles of the biodegradable polymer polyhydroxybutyrate (P3HB) on the freshwater organism Daphnia magna. The presence of microplastics in the environment is a frequently discussed environmental problem, hence efforts are being made to develop biodegradable plastics that would degrade more easily in the environment. The most studied biopolymer P3HB, however, there is not much information on its ecotoxicity yet. In the context of this work, ecotoxicity was assessed using a multigeneration assay; in addition, the effect of P3HB microparticles was compared to that of naturally occurring particles. Multigeneration assays are not yet commonly used for ecotoxicological evaluation, but they offer a comprehensive and realistic view of the effect of the test substance on the test organisms. In this work, 4 generations of D. magna were exposed to P3HB microparticles and kaolin microparticles for comparison. The results showed no negative effect on the mortality of the organism, but a slight decrease in reproductive activity was observed.
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Influence of microbioplastics on aquatic plants
Mácová, Sabina ; Maršálková, Eliška (referee) ; Kučerík, Jiří (advisor)
Plastic pollution is becoming a serious environmental problem, for this reason, in recent years efforts have been made to propose alternatives to conventional plastics. Biodegradable plastics appeared to be a possible alternative due to similar properties to synthetic plastics and because they are considered safe and degradable in the environment. However, under real conditions, biodegradation is a relatively time-consuming process that can lead only to biofragmentation into small particles, co-called microbioplastics. So far, very little is known about their impact on the environment. This work deals with the ecotoxicological influence of biodegradable poly(3-hydroxybutyrate) (P3HB) microparticles in two size fractions (particles
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Biotic threats to garden monuments: algae, cyanobacteria and invasive plant species
Pergl, Jan ; Perglová, Irena ; Albrechtová, J. ; Antl, Tomáš ; Abarenkov, K. ; Baldrian, Petr ; Cihlářová, L. ; Klečka, Jan ; Kohout, Petr ; Kvasničková, Jana ; Maršálek, Blahoslav ; Maršálková, Eliška ; Pejchal, Miloš ; Petružálková, M. ; Petřík, Petr ; Pyšek, Petr ; Sádlo, Jiří ; Štefl, Lukáš ; Tedersoo, L. ; Větrovský, T. ; Vlk, Lukáš ; Vojík, Martin ; Vosátka, Miroslav ; Zezulka, Štěpán
Chateau, city parks and gardens are perceived as harmonious parts of the landscape. Unfortunately, even these areas have to face various threats, and they can be a threat to the surrounding environment. The exhibition /catalogue presents a look at the organisms that threaten parks. These threats cover unwelcomed invaders covering invasive plants and small microorganisms in the soil, on facades, statues or in water. On the other hand, some species that are intentionally brought to the parks can be risky not only the gardens themselves but also their surroundings.
Fulltext:  PDF
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Návrh managementu a zpřístupnění VKP Maděrany v k.ú. Hajany, bývalý okres Brno - venkov
Maršálková, Eliška
The purpose of the bachelor thesis was to propose a management plan for the important landscape element Maderany and its accessibility. The management proposal was based on an investigation of the current state of the area and on other restrictions, imposed by the forestry management plan and urban planning documentation of the municipality. The attachment contains graphical representations of placement suggestions for each intervention. A literary research on the term important landscape element was conducted as part of the overview of the subject.
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Projekt revitalizace ovocného sadu v k.ú. Hajany
Maršálková, Eliška
The first part of the thesis summarizes the theoretical background elaborated from the literature dealing with the issue of functional plantations in the landscape and extensive management in connection with fruit trees. In addition, field surveys were carried out at the selected locality, which consisted of locality surveys and focused on the current state of existing woody vegetation. By processing the information obtained in the theoretical part and in the field work, variants of the restoration of the old kit at the selected location were proposed. The optimal variant then became the main subject of the second part of the thesis, in which it was further elaborated into modified project documentation for zoning proceedings.
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Vliv klíštěcích slin na fagocytózu borelií dendritickými buňkami
MARŠÁLKOVÁ, Eliška
In this study we examined the effect of the tick saliva from I. ricinus and the effect of recombinant protein IRS-2 from the saliva of I. ricinus on dendritic cells derived from the mice bone marrow. We studied their effect on the production of cytokines by dendritic cells after the stimulation by B. burgdorferi, their effect on the expression of genes, that participate in phagocytosis, and the impact of the tick saliva on phagocytosis of B. burgdorferi by dendritic cells.
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Process of destratification at Brno dam reservoir
Marek, Tomáš ; Maršálková, Eliška (referee) ; Palčík,, Jiří (advisor)
This thesis deals with the process of destratification at the Brno dam reservoir within the activities of a larger project "Clean Svratka", aimed to improvement of water quality in the catchment area upstream the Brno dam. At the Brno dam the project "Implementation of measures at the Brno Reservoir" has been in progress for the third year. Its aim is the proposal and implementation of measures to suppress the cyanobacteria mass development in the dam lake. One of the key measures is aeration and mixing of dam water through a 20 aeration tower. The theoretical part of this thesis focuses on seasonal conditions in the dam lake, the technology suitable for destratification and aeration and possibilities of their use. In the practical part of the thesis the seasonal destratification and the impact of meteorological conditions are monitored.
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Possibilities of removal of selected estrogens from water using
Maršálková, Eliška ; Maršálek, Blahoslav ; Endo, Valentina ; Godoy Alonso, Paula ; Jančula, Daniel
Advanced wastewater treatment technologies are focused on removal of micropolutants such as pharmaceuticals, estrogen disrupting compounds etc. To protect public health it is not possible to stop using pharmaceuticals, but it is necessary to find environmental friendly technologies which can remove or reducce these compounds. So called green technology and ferrates belongs to this treatment. It was found that estrogenes are reduced/removed from wastewater with different efficiency by common processes as it is shown in this paper. Processes using vegetative treatment and activated sludge treatment are compared. Results of estrogen removal by zerovalent iron and hexavalent iron are introduced.
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