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The thesis is a result of a 2-year floristic mapping (vegetation seasons 2007 and 2008) of basin of river Otava in the sector Strakonice {--} Zátavský most near Hradiště. The thesis includes characteristic of various vegetation biotopes, phytocoenosic recording, a short description and evaluation of distinctive species occurrence. A characteristic of area of interest geomorphologic, geologic, hydrologic, soil, climatic and other conditions) is provided in the form of a literary recherche.

The thesis deals with the issue of natural habitats in wider context. Literature search gives a brief overview of the basic concepts and it shows the possibilities of landscape architecture in the creation and protection of landscape. Slatina river valley, in which the number of habitats of European and national importance are located, was chosen as a model area for this thesis. A primary, secondary and tertiary structure of the country has been evaluated as a basis for further evaluation and proposal. In the model area there were mapped the habitats and their ecological and socio-economic assessment was performed by the field investigation. Based on the identified knowledge, the management area was designed for preserve natural habitats. Knowledge are summarized in conclusion and own opinion on the issue is formulated. The work includes own photo documentation.

This thesis is concerned with the issue of biotechnical objects in the landscape. Biotechnical objects are built to protect species biodiversity. They replace the natural refuge of certain groups of animals. The first chapters on the protection of nature and state of habitats in the Czech Republic explain the reasons why many habitats are endangered or extinct. In a second stage the proposed classification of biotechnical objects follows. Three ways of looking at sorting them are introduced. They reflect the open landscape, the private sector and the urban area residences. Finally the description of construction, materials and suitable locations is presented for 20 biotechnical objects. Their arrangement corresponds to the classification by target species. The part of the thesis is a case study which is based on the field research in the years 2013-2015, when the implemented biotechnical objects were visited. The result is a comprehensive evaluation of the functionality of selected objects and their aesthetic influence.

Amphibian decline in recent decades has led to increasing emphasis on monitoring amphibian population abundances. Efforts to assess the condition of each amphibian populations greatly complicate significant natural fluctuations in population size. This may occur particularly in the case of short-term studies that currently prevail. Spoil banks represent a suitable environment for a range of environmental studies. Often these places are not in direct influence of human activities, thus offering the possibility of studying natural processes. On the Hornojiřetínská spoil bank (approximately 6 km2) has been underway since 2005, abundance monitoring of agile frog (Rana dalmatina) and recording and selecting characteristics of water bodies. At the spoil bank is located about 400 aquatic habitats. 225 of them are continuously monitored the development of aquatic habitats and 134 monitored abundance of agile frog. Development of aquatic habitats is not routinely examined unlike development of terrestrial environment. Results showed that the depth of the pond is reduced, surroundings were overgrown and insolation of water level has fallen. Only littoral vegetation showed no change. Abundance of agile frog fluctuated more than 10 times during the studied period, but the data manifested no trends. Decreases slightly outnumbered increases (6 vs. 4), exhibited greater range (1.07 to 6.40 versus 1.69 to 2.40) and and occurred within a longer consecutive period (5 vs. 2 years). Furthermore, it was strong correlation between total abundance and occupied ponds. The results of this study point to the need to establish an appropriate management and the necessity of long-term studies for a correct understanding population dynamics of amphibians.

The issue of spreading invasive plant and animal species is becoming increasingly topical. It is not possible to control the spread of invasive species without appropriate interventions and restrictions. This thesis researches endangering of SCI by selected invasive plant species whose presence was monitored in 2015. An occurrence of invasive plants, depending on the altitude and the area of the invasion in the selected SCI, is compared in this thesis. A suitable proposal limiting the spread of invasive plant species is also considered in this work. Using statistical analyzes the level of threat of the SCI is monitored and also found out whether the protection of habitats that are subjected to protection of the SCI.

The diploma thesis deals with evaluation the importance of the age of trees genus Quercus in the ecological niche of animals regard to endangered or specially protected species. The theoretical part solves the problem of tree as a habitat, describes the importance of the age of the tree and there is a closer look at genus Quercus as well. In the next part are evaluated the trees of the three selected sites depending on the type of habitat. The diploma thesis also maps the presence of elements of ecological potential which allow species to the existence or another opportunity to stay within a particular tree species. It describes the options assesments of trees by available methodologies.

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