The aim of this thesis is to evaluate the inter-annual differences in species composition of selected stands of a wet meadow ecosystem in relation to determining meteorological parameters. Changes in plant communities were studied in selected parts of the Wet meadows near Třeboň. Inter-annual differences were found only in the cover of dominant species, but not in the constancy of species.The average cover of Phalaris arundinacea was greater in 2007 than in 2006. A further increase was observed in 2007 in the cover of Calamagrostis canescens, whose presence on the wet meadows was previously limited by the floods in 2002. Calamagrostis canescens again appeared on the Wet meadows in 2006, but its growth was promoted only in the drier year 2007. The results show that the community is relatively stable in relation to short-term fluctuations of the weather.

The theme of this diploma thesis was effect building a golf course on the environment - EIA Czech Krumlov. On location Kvítkův Dvůr in Czech Krumlov was suggested build an 18-hole golf course. Construction of a golf course in this area may significantly distort the historical landscape. On the given locality conducted a biological exploration. Research has proved that there are no rare or endangered plant and animal species, therefore, the realization was possible. However Kvítkův Dvůr is an important cultural monument, which falls into the protection zone urban conservation.

Biotopes associated with railway corridor in valley of the river Tichá Orlice (Eastern Bohemia, Czech Republic) ABSTRACT Expansion, invasion or decline of plant species caused by environmental changes belong to the most important phenomenons associated with vegetation cover development. In spite of their often initiation by human activities the above mentioned processes continue then spontaneously and uncontrollably. This study is concentrated to the effect of these mechanisms on the biotope structure along the Tichá Orlice River (Eastern Bohemia, Czech Republic) - in its lowland landscape segment of the canyon character where the second axis of the valley (river flow is the first one) is created by railway line more than 150 years of local history. The case study has the general aim: to treat the present and/or future impact of described trends to plant biota and the degree of its influencing. My diploma thesis investigates functional impact and mutual interaction of the two main migration pathways of exotic species - the T.Orlice river and the railway corridor. It presents qualitative and quantitative changes in plant components of local (semi)natural biotopes by mean of interrelationships among selected ecological groups of species (neophytes, expansive species, and ephemeroids). At the same time, this...