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Let's meet in the littoral: Diversity of symbiosis in the Verrucariaceae lichens
Schmidtová, Jana ; Škaloud, Pavel (advisor) ; Peksa, Ondřej (referee)
Lichens are organisms formed by several symbiotic partners, most importantly a fungus (mycobiont) and an alga or cyanobacteria (photobiont). Although most lichens are terrestrial, some can be found also in aquatic environments. Black crustose lichens from the family Verrucariaceae (Verrucariales, Eurotiomycetes, Ascomycota) were able to adapt to this environment very well and often dominate in the seashore near fluctuating water level. The ability of these lichens to inhabit various environments is associated with their unusually wide range of photobionts. However, this symbiont is not known to most of them. This work investigates the diversity of lichens of the family Verrucariaceae in the littoral zone of the Baltic and the North Sea coasts, the relationships between symbionts and the connection between lichen diversity and the salinity gradient. Using metabarcoding, the diversity of free-living algae in the vicinity of the studied lichens is determined and the symbiotic algae are compared with the photobionts found in the lichens. Mycobionts and photobionts were identified using ITS and 18S rDNA. A total of nine lineages of mycobionts and photobionts were found. The most common lichen turned out to be the species Hydropunctaria maura with its photobiont Pseudendoclonium submarinum. For several...
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Nordic states and their support of Estonia, Latvia and Lithuania on their way to european structures
Lukeš, Pavel ; Rovná, Lenka (advisor) ; Hořejšová, Tereza (referee)
Diploma thesis "Nordic countries and their support of Estonia, Latvia and Lithuania on their way to European structures" deals with foreign policies of Denmark, Sweden and Finland towards three Baltic countries in the 1990s. The paper is focused on Danish, Swedish and Finnish bilateral support of three Baltic countries on their way to European structures, particularly to the EU. The thesis strives to explain a rationale and motives which were behind decisions of Nordic countries to help Baltic countries in the 1990s. Although the thesis is primarily focused on a development in the 1990s, a short part is also devoted to a historical development of the relations between Nordic and Baltic countries. This historical excursion helps to identify changes of Nordic foreign policies (Baltic policies) which occurred in the 1990s. The main proposition of this thesis is a statement that though there were several motives behind decisions of Nordic states to help Baltic countries, the main factor which caused high involvement of Denmark, Sweden and Finland in the Baltic Sea area were security related factors. The thesis also offers a summary of some motives which were behind high involvement of Nordic countries in the region and provides some similarities and differences in Baltic policies of Denmark, Sweden and...
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Present Swedish - Russian relations in context of intrusions of Swedish territory
Schneider, David ; Rolenc, Jan Martin (advisor) ; Machoň, Miloslav (referee)
The main topic of this Bachelor thesis are mutual relations between the Swedish Kingdom and the Russian Federation. These relations are being analysed with respect to historical experience. The concept of learning in international relations is used as a theoretical part of the research. The primary aim of this thesis is to critically assess the Swedish - Russian relations focusing on intrusions of Swedish territory over the last few years (esp. the territorial waters by submarines and the airspace by jet planes) which already appeared at the beginning of the cold war as a shaping feature of present relations between these two countries. In conclusion, the thesis says that the historical events (i.e. recent submarine-incidents in Swedish waters) have led to even bigger mistrust and negative perception of Russia.
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