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Obotrite Proces of State-forming in Central European Dimension (789-1178)
Tomášek, Jan ; Žemlička, Josef (advisor) ; Klápště, Jan (referee)
Key Words Polabian Slavs, Polabian area, Obodrite, Populus, Gens, Nacio, State, Mecklenburg-Western Pomerania, Obotritic confederation tribes Abstract The thesis analyses and interprets the key events in the state-forming process of so-called Obotritic confederation tribes in 789 - 1178. It focuses on the analysis of written sources, which serve as a basis for three models of inter-tribal units in Polabian area. The thesis argues against the traditional evolutionistic point of view, which considers the confederation tribes to be the predecessors of early medieval states. The main focus of the analysis is put on the starting point form which the Obotritic state-forming process originated. The main question is whether the Obodrite, upon their first appearance in written history, were more federation of tribes or one large tribe, whose break-up at the turn of 9th and 10th century started a new phase of the process. For the next period, the thesis introduces unique model of so-called tribal state, created by the combined effects of various factors, such as location, political situation, social changes in 11th and 12th century etc. The inner and outer factors that lead to the break-up of the Obotritic tribe state in 1270s are discussed in the same manner. The last part of the thesis is an analysis of later...
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Nutrient budget in reclaimed and non reclaimed heaps
Veselá, Monika ; Frouz, Jan (advisor) ; Svoboda, Miroslav (referee)
Extraction of mineral resources causes landscape degradation and the aim of reclamation efforts is to restore ecosystems. Our research was carried out on spoil heaps after brown coal mining near Sokolov (Czech Republic). We compared twenty years old spontaneously developed sites and reclaimed sites afforested by alders Alnus glutinosa and A. incana. Biomass and nutrient budget were evaluated for herbs and woody plants, separately for species Salix caprea, Populus tremula and Alnus glutionosa. Alder showed significantly higher concentrations of nitrogen and carbon compared to other tree species. The total amount of biomass, carbon and nitrogen was higher on reclaimed sites whereas phosphorus was more represented on spontaneously developed sites. Most of nitrogen was accumulated in the below-ground tree biomass and the largest amount of phosphorus was in the above-ground tree biomass. Woody plants of non-reclaimed sites produced more litter whilst litter of alder stands showed a higher concentration of nitrogen. Higher values of biomass, carbon and nitrogen of reclaimed sites were probably achieved through alder ability to fix atmospheric nitrogen.
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Obotrite Proces of State-forming in Central European Dimension (789-1178)
Tomášek, Jan ; Žemlička, Josef (advisor) ; Klápště, Jan (referee)
Key Words Polabian Slavs, Polabian area, Obodrite, Populus, Gens, Nacio, State, Mecklenburg-Western Pomerania, Obotritic confederation tribes Abstract The thesis analyses and interprets the key events in the state-forming process of so-called Obotritic confederation tribes in 789 - 1178. It focuses on the analysis of written sources, which serve as a basis for three models of inter-tribal units in Polabian area. The thesis argues against the traditional evolutionistic point of view, which considers the confederation tribes to be the predecessors of early medieval states. The main focus of the analysis is put on the starting point form which the Obotritic state-forming process originated. The main question is whether the Obodrite, upon their first appearance in written history, were more federation of tribes or one large tribe, whose break-up at the turn of 9th and 10th century started a new phase of the process. For the next period, the thesis introduces unique model of so-called tribal state, created by the combined effects of various factors, such as location, political situation, social changes in 11th and 12th century etc. The inner and outer factors that lead to the break-up of the Obotritic tribe state in 1270s are discussed in the same manner. The last part of the thesis is an analysis of later...
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Vliv duální mykorhizy na příjem těžkých kovů vybranými dřevinami čeledi Salicaceae
Kuchár, Michal ; Mrnka, Libor (advisor) ; Kolaříková, Zuzana (referee)
3.2. Abstract Soil contamination by heavy metals represents rather serious environmental problem for both human health and an environment itself. One of the perspective technologies dealing with this threat that only recently has been intensely developed is phytoremediation by means of short rotation coppice plantations. As plants used in this technology (mostly poplars and willows) host two major groups of mycorrhizal fungi substantially influencing plant physiology it is important to study plant-mycobiontheavy metals interactions rather than just plant-heavy metals interactions. The present thesis aimed to contribute to the growing knowledge of the field by search for suitable mycobionts of poplar or willow tolerant to heavy metals, by evaluating an activity of the key antioxidative enzyme in selected mycobionts and by looking at physiological responses of plant hosts to their mycobionts in a soil polluted by heavy metals. The first experiment in vitro focused on screening of morphometric criteria of fungi growing on solid growth media amended with mixture of heavy metals. Based on the results, several tolerant ectomycorrhizal strains were chosen for the next inoculation of fast growing trees serving phytoextraction and phytostabilisation strategies. The second, re-synthetic experiment was conducted in...
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