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Structural tectonic and morphometric characteristics of the Upper Otava river basin
Burkytová, Šárka ; Hartvich, Filip (advisor) ; Stemberk, Jakub (referee)
The thesis deals with the structural-geomorphological characteristics and morphometric analysis of the Upper Otava River basin, located in the Šumava Mountains. The introductory part is focused on the literature search, in which the area of interest is evaluated in terms of physical-geographical characteristics. The review also deals with an overview of methods of structural geomorphological research with a focus on morphostructural analysis of relief. The structural-geomorphological characterization was established by means of a joint analysis of selected sites where the direction of the joint surfaces and their slope were measured. A morpholineament analysis and fault tectonics analysis were also done to define the morphostructures. The individual morphostructures were evaluated using morphometric analysis methods and compared using morphostructure synthesis in terms of their similarities or differences. Finally, the geomorphological evolution in the area of interest was outlined. Keywords Morphostructural analysis, structural measurements, Šumava mountains, morphometry, morpholineaments
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Calm and wild river; An etnography study around the Otava river
Mottlová, Tereza ; Kuřík, Bohuslav (advisor) ; Sosna, Daniel (referee)
In this diploma thesis I wanted to find out how people who live in a close relationship with the river deal with the extremes like are floods and drought. I wondered if local settlers and the city administration identified the threat of flood differently from people who did not live in contact with the river, and if their relationship with the river could be useful for others. I tried to find out if and how the locals reflect climate change through their lived experiences with floods and droughts. During my six-month research, based on ethnographic methods I spent time with gardeners who have been critically affected by drought in recent years, with settlers who regularly experience floods and with representatives of the city administration. Thanks to ethnography, I was able to understand the context of the relationships I studied. I found out that living in contact with floods is not as dramatic as it may seem to an observer. Thanks to many years od experience with floods and the river have the locals developed local knowledge, that can be very useful for whole city; If the city administration can combine expert and local knowledge, solving potential problems with high water can become much more effective and proportionate to reality. People living under the threat of floods do not need to be seen...
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Climatic change effect on hydrological drought in the Otava River headwaters
Šachová, Barbora ; Kocum, Jan (advisor) ; Fiala, Theodor (referee)
CLIMATIC CHANGE EFFECT ON HYDROLOGICAL DROUGHT IN THE OTAVA RIVER HEADWATERS Abstract The submitted thesis deals with hydrological drought in condition of climate change in Otava River headwaters. The topic is discussed from four different aspects that together create a complex view on the hydrological drought issues in the catchment. The first aspect, the hydrological drought analysis in daily series, is done by threshold level method and SPA. Second aspect studies the impact of climate change on the hydrological drought by using the BILAN model. Following aspect determines a prediction of low flows and deficit volumes during drought by the recession analysis. Final aspect suggests relating process of management, planning and adaptation measures on drought. Key words: hydrological drought, minimal discharges, deficit volumes, BILAN model, climatic change, recession analysis, Otava River, Modrava, Rejštejn, Sušice, adaptation measures
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Mercury content in muscle of chub (\kur{Leuciscus cephalus}) from the downstream tributaries of the Elbe river
KOLEK, Bohuslav
Mercury content in muscle of chub (Leuciscus cephalus) from the downstream tributaries of the Elbe river. The aim of the present study was to investigate the concentration of total mercury in muscle of 141 chub (Leuciscus cephalus) from seven Czech rivers (Vltava, Berounka, Sázava, Ohře, Otava, Lužnice, Labe) and to evaluate the potential risk of eating fish from the rivers. Total mercury values results from 2011 were compared with 2010. Mercury was determined by means of cold vapour atomic absorption spectrometry using AMA-254. The highest mean concentrations of total mercury were found in the Otava-Topělec (0,240 +- 0,106 mg/kg) for year 2010 and Labe-Obříství (0,222 +- 0,102 mg/kg) for year 2011. The lowest mean concentrations of total mercury were found in the chub from the Berounka-Beroun for both years (0,053 +- 0,013 mg/kg and 0,064 +- 0,010, respectively). The fish intake hazard index calculated were between 0,1 and 0,4 for the individual tributaries monitored. The results of this study show that hygienic limit for fish product (0,5mg.kg-1) was exceeded in Otava-Topělec (0,59mg.kg-1).
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The historic gold-mining in Pootaví
STRAKA, Jan
To the development of my Diploma Thesis the literature dealing with the issue of the history of gold mining in Pootaví and natural conditions of the region was used. The thesis more closely specifies various historical stages of gold mining in this area and the procedures and methods used by them. The first intensive panning work and the first part of the underground works belong to the 5th century BC. Furthermore, it was found that the most intensive period of mining in this area took place in 13th - 14th century. Major panning works were completed in the course of the 16th century, underground works were finished later, with the exception of the area of Kašperské Hory, where underground mining continued until the beginning of the 20th century. In the last century geological surveys of the paddies found gold in small quantities, which excluded mining from the economical point of view. Geological exploration of the underground deposits of gold in Kašperské Hory was prematurely terminated under the pressure of the public. The practical part consists of conducted panning experiments at several locations using panning pelvis and panning sluice. At all the locations, except one, was the occurrence of gold detected, but in such a small quantities excluding profitable mining from the surface areas.
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HYGIENIC QUALITY OF FISH FROM SIGNIFICANT FISHING WATERS BEROUNKA 1, LUŽNICE 6, OTAVA 4, OTAVA 7 (P)
BARTOŇ, Jiří
The main aim of this study was to evaluate hygienic quality of fish from significant fishing waters: Berounka 1, Lužnice 6, Otava 4, Otava 7 (P). Sampling was performed in 2010 by electrofishing and fishing rods. 173 individuals belonging to 13 different fish species were fished. The samples of fish muscle were analysed for the following substances: Hg, Pb, Cd, PCB, DDT and its metabolites (DDE and DDD), a-HCH, b-HCH, y-HCH, HCB. Samples of bream (Abramis brama) muscle were collected at all monitored sites (exception was Otava 7) and bream was used as reference species to compare the contamination among monitored rivers. The results were compared with valid hygienic limits. The values of contamination were in most cases very low and far below the limits. Only mercury was identified as a risk contaminant in all monitored rivers. Average concentrations of mercury in the muscle of bream were in the range of 0.261-0.284 mg/kg and were comparable in all rivers. The hygienic limit for mercury (0,5 mg/kg) was exceeded only in 4 cases - one individual sample of bream from Otava, two mixed samples of asp (Aspius aspius) from Berounka and Lužnice, one mixed sample of perch (Perca fluviatilis) drom Otava. The highest value of total mercury content (0.768 mg/kg) was found in asp from Lužnice 6. All concentrations of persistent organochlorinated pollutants in fish muscle were far below the valid hygienic limits. The only health risk was posed by increased content of mercury.
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