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Bryophytes of dry grasslands in southern part of PLA Český kras
TENČÍK, Aleš
The aim of the thesis was to survey the occurrence of mosses in the different types of calcareous dry grasslands in the southwestern part of the Bohemian Karst and assess the impact of major abiotic and biotic factors to their diversity.At seven habitat types was acquired a total of 35 plots of 1x1 m. The most important factor influencing the diversity of mosses turned out to be the degree of coverage of herb layer markedly influenced by used type of management.Dry grasslands with Festuca pallens (T3.1) and Sesleria grasslands (T3.2) appeared to be rich in moss species. Conversely mossy low diversity here is presented by broad-leaved dry grasslands (T3.4).
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Studium flóry a vegetace mokřadu u Císařské jeskyně v Moravském krasu
Nováková, Eliška
This thesis focuses on flora and vegetation of the wetland near Císařská Jeskyně in Ostrov u Macochy. Three shallow pools were done during revitalization project in 2012. After that, I have carried out floristic and phytosocioological research with a goal to map and evaluate the current state of flora and vegetation. Field research was realized in years 2013-2014. The characteristic of the study area and state of the vegetation before the revitalization is posed in few first chapters. In following chapters are described met-hods, procedure and results of the research in detail. The thesis evaluates the effective-ness of the revitalization intervention during the first two years and will serve as back-ground material for continuing long-term research on permanent plots in pools.
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Aspects of reproduction biology of the moss \kur{Helodium blandowii}
BRADÁČOVÁ, Jitka
Regeneration from stem and branch fragments of the moss Helodium blandowii was examined in common garden and field experiments. The treatments included one cm long terminal stem fragments and branches of one cm and half cm length with and without the terminal and their regeneration was observed in course of 3 months in the common garden experiment and 15 months in the field. Dynamics of Helodium patches was observed in course of 2 years in permanent plots of the nature reserve Ruda. Genetic stucture of all recent Czech populations of Helodium blandowii was investigated and compared with a pilot survey of populations from Scandinavia and Lithuania using the microsatellite markes developed for this study.
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Effect of management on three moss species of fen meadows (Breidleria pratensis, Sphagnum warnstorfii, Tomentypnum nitens)
VELEHRADSKÁ, Tereza
Effects of different types of management (control, mown, mown + disturbed (gaps) + litter removed) on three moss species of fen meadows were studied. Experimental plots were established at sixteen sites in the Bohemian Forest, in the foothills of the Bohemian Forest and in Českomoravská vrchovina. Relevés and micromaps of bryophytes in the plots 0.5 × 0.5m were sampled at the beginning of the experiment during the summer season of 2010 and then after 3 seasons (during the summer season of 2012) of performing management. The age of the abandoned meadows was also determined and values of pH, conductivity and height of water level of each plot were measured. Positive influences of both types of management on the cover of Tomentypnum nitens and of management with creating gaps and remowing of litter on the cover of Breidleria pratensis were significant. Effect of management on the Sphagnum warnstorfii was significant only when processes of remaining on already occupied places and the expansion to new places were tested separately. Enviromental values did not significantly influence the change of cover of any species between 2010 and 2012. In conclusion, it is clear that diverse management with reasonable use of these practices (mowing, creation of gaps, litter removal) is desirable for maintaining of vital and diverse bryophyte layer.
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Ecology and distribution of the moss \kur{Helodium blandowii} in the Czech Republic
BRADÁČOVÁ, Jitka
Recent and historical localities of the moss Helodium blandowii in the Czech Republic were written up in this thesis and various ecological charakteristics of this species were studied. It was grown with Sphagnum teres on hummocks and in hollows and these two species were compared in their high above water-table where they grow best. Further regeneration abilities of Helodium blandowii were examined.
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Effect of management on the vegetation and the species diversity of vascular plants and bryophytes of the Bohemian Forest{\crq}s fen meadows
VELEHRADSKÁ, Tereza
Effect of management on the vegetation, the species composition and the species diversity of vascular plants and bryophytes of fen meadows was studied. Relevés (4x4m2) were sampled at seven mown sites and at seven unmown sites across the Bohemian Forest and foothills of Bohemian Forest during the summer season of 2009. General linear models and methods of direct and indirect gradient analysis were used for evaluation of species data. The influence of management on differences in species composision of vascular plants and bryophytes was significant. The management had significant effect on the number of species of vascular plants, the number of Sphagnum species and the cover of Sphagnum species. The significant impact of management on the species diversity, the percentage share of rare species and the number of species and cover of all bryophytes was not found.
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