Food preference of small rodents to consume the roots of wild plants with the emphasize on their impact to bulbs of orchid Dactylorhiza majalis has been studied on three localities during years 2002 - 2007. There were selected ten couples of plants in each plots, one individual of couple plants was protected by tin triangle. Indicated plants have been measured in the beginning (high, length and wide of the leaves and flower number) and at the end of growing period (number of capsules). Small mammals were snaptrapped for three nights in the autumn. On each locality four rows of 25 snap traps were situated, two rows through orchid plots and two without orchids. In years 2004 {--} 2007 the food preference was ascertained on studied sites. Roots of Daucus carota (as a control in year 2004) and roots of Selinum carvifolia (as control in years 2005 - 2007) and roots of tested plant were put into one rectangle "bait" of size 15 x 6 centimeters from gauze. These 50 "baits" were placed among 100 traps on each locality, every other trap, during snaptrapped of small mammals. Browsing was classified by six number scale. During years 2005 - 2007 food preference of Microtus arvalis under laboratory conditions of Science Faculty of South Bohemia University was achieved with the roots of the same species as we used during food preference on plots. During years 2006 -2007 bulbs of Dactylorhiza majalis from laboratory condition and a few idividuals from endengered meadows by revitalization of pond were added. During yeas 2006 and 2007 the contain of stomach from Microtus arvalis and Microtus agrestis, catched during autumn, was studied. Bulb destruction by small rodents during years 2002 - 2007 was not confirmed. But Microtus arvalis preferred bulbs of Dactylorhiza majalis under laboratory conditions and roots of Selinium carvifolium and Lysimachia vulgaris boths in laboratory and wet meadows. Destruction of orchid bulbs and more preferred roots of wild plants by small rodents could occur probably only in outbreaks of their population cycle. I did not observe this on studied plots. In mount of stomach from Microtus arvalis only 3% underground supply organs of plants; rest of stomach contain was consisted of aboveground green part of plants. This result was expexted, because small rodents prefere during vegetation period green part of plants.

This Diploma theses is dealing with the creation of general current list of reserves, production, consumption and trade of each energy raw material with a view to fossil fuel. The introduction of my work is applied to general reflection reflecting present state of fuel issue. The following chapters are talking about the aims of my work, the literature analysis and the methodology. After the introductory part there are particular chapters talking about crude oil, gas and coal. All these parts of work are dividend into the subchapters containing general introduction that describes each energy raw material. This work brings the inttegrated current data of mined fuel material organized into the synoptic tables. These tables are completed with schematic graphs. The assembled tables determine the list of the biggest international producers, consumers, shippers and importers of each strategic energy commodity. The conclusion of study belongs to the summary of determined aims of work and the outline of importance of fuels in the present-day world.

This thesis creates a part of more extensive scientific study, which evaluates effects of different agricultural management on ecological functions and on landscapes´s water regime in source water areas of Bohemian Forest. A one of examined characteristic of catchment is biodiversity of plant and animal communities. The aim of my thesis is a comparsion of diversity of small terrestrial mammals in three catchments with similar nature conditions, but different management. Small terrestrial mammals is a group of vertebrates often used for study of enviromental state, because of their high reprodctive potential, good invasive ability and ability to indicate the changes in environmental quality. The master thesis is a follow-up to a previous bachelor thesis and extends it significantly. A teoretical part involves literary review of small mammals´s occurrence in Bohemian Forest, their micro-habitat preferences and the effect of management on the biodiversity of their communities. Practical part of the thesis contains evaluation of the results of capture-mark-release trapping, which took place from June to September of the years 2007 and 2009. In those two years 52 individuals were captured. From this amount, 7 individuals were captured twice. Captured small mammals were included into 5 species, whose occurrence in studied localities was expected. There were yellow-necked mouse (Apodemus flavicollis - 22 individuals), field vole (Microtus agrestis - 6 individuals), common vole (Mircotus arvalis - 10 individuals), bank vole (Clethrionomys glareolus {--} 2 individuals) and common shrew (Sorex araneus - 5 individuals). In the Bukový potok catchment 20 individuals were captured in 2007 and only 2 individuals in 2009. They belong to species: Apodemus flavicollis, Clethrionomys glareolus and Sorex araneus. In catchment of Mlýnský potok no individual was captured in 2007 and 10 individuals of only one species (Mircotus arvalis) were captured in 2009. In Horský potok catchment 5 individuals were captured in 2007 and 8 individuals in 2009. Three species were found: Apodemus flavicollis, Microtus agrestis, Clethrionomys glareolus a Sorex araneus. The largest positive change of abundance between 2007 and 2009 was found in the Mlýnský potok catchment. The largest fall of abundanace was in the catchment of Bukový potok. Only in catchment of Horský potok the relatively stable abundance was noticed. The thesis was supported by projects: MSM 6007665806, NAZV-QH82106 a NPV2-2B08006.

The aim of my thesis was to describe the biodiversity and try to outline the population dynamics of small terrestrial mammals on the Great podkrušnohorská spoil heap. We captured small mammals six times during the 2009 and 2010 seasons. We used the standard capture-mark-release method (CMR) with live traps in quadrates at five sites with different restoration type- wetland, forestry (alderwood and pinewood), agricultural and controlled succession. The observed data were processed in Microsoft Office Excel and by canonical correspondence analysis (CCA) in Canoco for Windows. In 2009 a total of 67 individuals of five small mammals´species were captured: Apodemus flavicollis, Microtus arvalis, M. agrestis, Myodes glareolus and Sorex araneus. The highest biodiversity (3 species) was recorded in wetland restoration. The highest abundance (20 individuals) was recorded in alderwood forestry restoration. In 2010 258 individuals of 7 species were captured: Apodemus flavicollis, A. sylvaticus, Microtus arvalis, M. agrestis, Myodes glareolus, S. araneus and Micromys minutus. As in 2009 the highest abundance was recorded in alderwood forestry restoration(60 individuals) and the highest biodiversity (7 species) was recorded in wetland restoration.

Due to the shortage of oil and the current environmental pollution problems, there is a growing need for alternative energy sources. Compressed or liquefied natural gas is shown as a prospective fuel. For LNG, consumption of 100 million Nm3/year is predicted by 2030. This work aims to prepare a pre-feasibility study for the production of LNG in the Czech Republic, which would be able to cover this predicted demand. The economic concept of the chemistry-engineering approach provides comprehensive information about the topic. The results show that the planned plant will unfortunately not be profitable, as compared to the current LNG price imported to European seaports, the price of the produced product in the factory considered would be roughly twice as high.

The thesis is concerned with multi-criteria evaluation of alternatives of modernization of compressor station for natural gas. This thesis is divided into practical part and theoretical part. The theoretical part will introduce historical development of the gas industry and the current state of the gas network in our country. The following describes a method for operating a compressor station, its technology units and existing operational processes. The theoretical part is a chapter that describes methods of multi-criteria evaluation of alternatives and a way of specifying the methods suitable for constructing weights of the criteria. The fifth chapter contains an application example, the aim of which is to choose the suitable way of modernization of the compressor station that would meet the requirements of planned projects. Creating recommendations for the management of the company fulfilled the goal of this thesis.

This diploma thesis dissertates about energy security of the European Union and the Czech Republic in the context of the foreign relations with Russia. It is focused on Russia as the biggest supplier of energy resources to the fore mentioned regions. Energy dependence of EU and the Czech Republic on Russia exceeds 50 %. This dependency is inevitable and is caused by the insufficiency of EU's and Czech Republic's own resources and above all it is very dangerous because of Russia's frequent nondemocratic behavior. The gap in demand of energy resources cannot be covered even by alternative energy recourses, which are in this thesis divided into renewable recourses and nuclear energy.

The thesis deals with the issue of energy security in geopolitically strategic region of South Caucasus. The focus is on analyzing the development of energy policy in the individual countries of the region since the collapse of the Soviet union. On this basis is determined the most important security challenge: Armenia. This challenge results from the need to counteract the influence of external actors in the region and to address long-standing regional conflicts that would contribute not only to the stability of the South Caucasus, but also help to fully realize the potential of the region as an important transit corridor for Caspian and Iranian energy resources.

Swing options had been part of natural gas market before its embedded option feature was appreciated. The flexibility of delivery is valuable because of characteristic features of energy commodities as non-storability, high frequency of events and seasonality. Swing options enable this flexibility. Holder of the option is allowed to react to market situation in flexible way and change the amount of delivery up or down in some known intervals. Total deviation from negotiated amount can't exceed some boundaries in case of "take-or-pay" condition. It is not unique general valuation form of such flexible contracts as swing options. General definition of Longstaff Schwartz Least Square approximation method (LSM) is provided at first. Then it is shown other standard valuation concept as finite difference method. It is also mentioned tree method and more complex dynamic stochastic programming method. Analysis of energy commodities time series of central Europe is done and it is shown example of LSM approach use in valuing swing option with underlying asset of base load electricity in Czech Republic.

This thesis aims to set a complex view on the economy of the Russian Federation, show its strengths and weaknesses and evaluate its competitiveness in the context of oil and gas reserves. For this purpose the thesis is divided into three chapters. The first one analyses Russian macroeconomics and rates its efficiency, especially after 2000 and in relation to the global financial and economic crisis in 2008. Furthermore, the thesis describes country's energetic sector, its issues and perspectives, impact on economic growth and consequences of insufficient diversification and Russian dependency on export of resources. The main contribution of the thesis represents the last chapter which aims to identify Russian potential with regard to competitiveness, classify its possibilities, suggest solutions and changes needed to enhance competitiveness and ensure sustainable growth independent on resource prices. In conclusion, possible perspectives of Russian development until 2030 are brought forward. The analysis of competitiveness is based on the methodology of the World Economic Forum and Global competitiveness index.