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Succession of mollusk assemblages in quarries of Bohemian Karst
Kocurková, Alena ; Juřičková, Lucie (advisor) ; Horsáková, Veronika (referee)
Molluscan succession was studied in 18 abandoned limestone quarries of different age in Bohemian Karst. The number of species in studied quarries increases in the time. The less species were found in the oldest quarries. This trend was probably caused by habitat diversity decline although it is not conclusive. The best predictors of mollusk species composition are type of surrounding vegetation, light and the cover of tree layer. It is important to take into account correlations of the other environmental variables with light and the cover of tree layer. Compositions of mollusk assemblages of north and south-facing slopes differ, but these differences diminish with ongoing succession. Quarries represent suitable model sites for the study of succession.
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Flora of southwestern part of Bohemian Karst
Synek, Michal ; Špryňar, Pavel (advisor) ; Kačmarová, Lucie (referee)
Since its begining in 19th century the floristic research in Bohemian Karst as a biogeographic region was not equivalent in all its parts. I was trying to collect informations about south-western part which is usually somehow overlooked compared to central or north-eastern part. Information include geological and klimatic definitions of the area as well as history of floristic research done here. Several studies we have from this area mention some interesting places with very interesting plant species. Still most of those localities aren't enough protected and are slowly (somewhere not really slowly) getting destroyed. The last part contains ideas and methodics for potential new mapping of flora in this area.
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Na Javorce Cave - a new discovery in the Bohemian Karst (Czech Republic): unique example of relationships between hydrothermal and common karstification.
Dragoun, J. ; Žák, Karel ; Vejlupek, J. ; Filippi, Michal ; Novotný, J. ; Dobeš, J.
The Na Javorce Cave is located in the Bohemian Karst, Czech Republic, about 25 km SW of Prague. The cave was formed in vertically dipping layers of Lower Devonian limestone; it is 1,723 m long and 129 m deep, of which 9 m is permanently flooded. The cave is polygenetic, with several clearly separable evolutionary stages. Cavities discovered to date were mostly formed along the tectonic structures of two main systems. One of these systems is represented by vertical faults of generally N-S strike, which are frequently accompanied by vein hydrothermal calcite with crystal cavities. The second fault system is represented by moderately inclined west-dipping faults. Smaller tube-like passages of phreatic morphology connect the larger cavities. The fluid inclusion data obtained for calcite developed along both fault systems in combination with C and O stable isotope studies indicate that the hydrothermal calcite was deposited from moderately NaCl-type basinal fluids (0.5 to 8.7 wt. % NaCl equ
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Organization and conduct of a geological excursion to the Bohemian Karst
RYDRYCHOVÁ, Jitka
This Master thesis summarizes the characteristics of geological conditions in the Bohemian Karst and presents a proposal for organizing a geological excursion for lower-level gymnasium students or ninth-grade pupils to this territory. The goal of this Thesis is to set up a methodological proposal for preparing an excursion to the Bohemian Karst. It sums up the theoretical assumptions for organizing a geological excursion, lays down methodological proposals for on-site work and compiles worksheets. This Master thesis was created as a part project GA JU 065/2010/S
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Habitat association of moths (Lepidoptera: Macrolepidoptera) in a structurarly diverse nature reserve (Koda National Nature Reserve, Cesky Kras)
ZÁVITKOVSKÁ, Lenka
Based on light trapping carried out in 2010, I studied moth communities of the Koda National nature reserve, part of Český kras landscape protected area, in order to compare moth communities inhabiting major biotope types within the reserve. The obtained material consisted of 295 species in 4455 individuals. Steppe enclaves hosted more species than overgrown coppices and beech-dominated high forests. Ordination analyses distinguished between steppe and forest biotopes. Steppe catches differed from forest catches in habitat associations of constituent species (more species of grassland habitats), whereas the two forest types did not differ in this. Identical patterns applied for all moths analysed together and for analyses restricted to Geometridae and Noctuidae moths. Steppic enclaves represent the most valuable sites within the Koda reserve.
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Spontaneous succession of vegetation of abandoned quarries in the Bohemian Karst: Occurrence of species in quarries and their surroundings
KAREŠOVÁ, Petra
Variation of vegetation during spontanneous succession was researched in ten limestone quarries in the Bohemian Karst in central part of the Czech Republic. Five abandoned quarries surrounded by woodland and five quarries with grassland prevailing in the surroundings were chosen. The age of quarries varied from 33 to 97 years. The complete list of plant species was recorded for each quarry and near surroundings (up to 100m).Resulting analyses demonstrated the close relationship between the occurrence of species in the quarries and their surroundings. The quarries may act as refugia for rare and retreating specie
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