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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Factors determining the vegetation composition of wet meadows and its changes in time
 Šimák, Martin ; Münzbergová, Zuzana (advisor) ; Procházka, Tomáš (referee)
This thesis is mainly a literature review of scientific papers and other studies of wet meadows and their characteristics. The aim of the thesis is to summarise knowledge especially of the changes of the vegetation composition of the wet meadows, reveal the causes of such changes and consider the influence of different types of management. Wet meadows underwent crucial changes. They have been drained, the grazing or mowing has ended up and many species were unable to adapt to the changed conditions. Biodiversity in general has been decreasing on these habitats and it has been caused mainly by the total change in management. By comparing different scientific papers I identified common characteristics of the declining species and optimal managment options suitable for stopping their decline were detected. Consequently, I introduce the main methods used to study changes in vegetation composition over time. In the final part of the thesis I mention Slavkovský Les as the area where my future research will be conducted.
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Influence of the development of vegetation cover in the basin on the regime of surface water and groundwater resources
 Buchtele, Josef ; Tesař, Miroslav
Variability of water regime is influenced usually not only by the changes of vegetation cover in the annual cycle, but also by the vegetation development in the span even of several decades. The resulting evapotranspiration requirement depends on actual climatic conditions; moreover the needs of soil moisture and the oscillation of solar radiation are also significant. The simulations of rainfall–runoff process have been used with the intention to follow the role of the developing vegetation cover and long-term climatic fluctuations. The differences between monitored and simulated runoff in the relatively long periods are the possible tool for the appraisal of changes in the water regime, which are influenced also by the changes of evapotranspiration need.
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