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Forest vegetation changes in the Bohemian Forest during the second half of 20th century
Prach, Jindřich ; Kopecký, Martin (advisor) ; Sádlo, Jiří (referee)
Long-term forest vegetation changes were studied in the Bohemian Forest and its foothills. New vegetation relevés were taken at sites of typological plots established by forest engineers between 1955 and 1980. Data from 158 semi-permanent plots were analysed using modern statistical methods. The data show significant changes and homogenization of the vegetation. Ellenberg indicator values indicate eutrofication. Repeated measurements of soil pH suggest acidification, but the interpretation of these data is complicated by methodological problems. The forests under study exhibit high spatial variability. No main prevailing trend in vegetation changes was found. The changes are considered to be related to sulphur and nitrogen deposition and forest management. The influence of increasing age of forest stands seems to be unimportant. Discussed are not only vegetation changes and their possible causes but also the possibilities and limitations of using such old forestry data in botanical and ecological studies.
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Basis for conservation assessment of Plant diversity of dry basic habitats within the forest environment in the Doksy region
Martinec, Pavel ; Sádlo, Jiří (advisor) ; Pivnička, Karel (referee)
Theme: Basis for conservation assessment of Plant diversity of dry basic habitats within the forest environment in the Doksy region Abstract: The subject of present study is high species richness of vascular plants on localities of dry basic habitats in Doksy region. This habitats are enclosed by nutrients poor habitats of coniferous forests, restricted to small areas and spatially isolated. The dry basic habitats represent high valuable areas for nature conservation due to high α-diversity and occurence of rare plant species with scarce populations within flora of Czech Republic. The aim of study is to collect and review known data about dry basic habitats of Doksy region and their biodiversity. Consequently find optimal approaches in analysis of biodiversity and approach in interpretation for nature conservation. Actual status of flora and vegetation depend on environmental factors, biotic interaction, evolution and historic development. The perspective theoretical approach in species diversity analysis shows the species-pool hypothesis (Taylor et al. 1990) which assorts and describes these factors. Keywords: biodivesity, vascular plants, Doksy region, species-pool hypothesis, nature conservation
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Vegetation of fir- and calcicolous beech forests of the Czech Republic
Boublík, Karel ; Sádlo, Jiří (advisor) ; Roleček, Jan (referee) ; Ewald, Jörg (referee) ; Walentowski, Helge (referee)
Boublík K. (2009): Vegetation of fir- and calcicolous beech forests of the Czech Republic. - Ms., 104 p. [PhD thesis; depon. in: Library of the Department of Botany, Faculty of Sciences, Charles University, Prague] The thesis proposes Braun-Blanquet phytosociological classification of calcicolous beech forests and fir forests of the Czech Republic. Calcicolous forests dominated by Fagus sylvatica (Fagion, Cephalanthero-Fagenion) were defined with the help of two approaches: (i) selection on the basis of correspondence of species composition with an expert delimited species group and (ii) the formalized and supervised Cocktail method. In the case of the Cocktail method, the definitions of associations were created by combinations of sociological species groups using logical operators. Dominance of single species was included in the definitions of associations. Only one association (Cephalanthero-Fagetum) was distinguished. This association usually occurs on limestone, calcareous sandstone and calcareous sandy marlite. However, it can be found also on basalt and phonolite. TWINSPAN analysis distinguished three vegetation types within Czech calcicolous beech forests which are interpreted as subassociations of Cephalanthero- Fagetum: (i) Cephalanthero-Fagetum seslerietosum caeruleae occurring on...
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Komárov a Čenkov. Regional probe into evolution of the landscape of Brdy.
Röschová, Kateřina ; Matoušek, Václav (advisor) ; Sádlo, Jiří (referee)
This paper looks into the evolution of Brdy, a mountain lands- cape in central Bohemia covered mostly by forests, examining the period from late Middle ages until the end of the Second World War. From the 15th century it was an important iron production center of whole Bohemia. The region provided all that was needed - iron ore, timber, wa- ter and was conveniently located near trade centers. During the industrial revolution (1800-1873) the industry grew. Small plants disappeared and the production was concentrated into emerging industrial centers. The forests, cleared of iron production, started to attract the attention of tourisms, youth organizations and tramps. The mountain range with large forest areas drew also the attention of the Ministry of Defense, which decided to establish an artillery range in the area. The changes of landscape are illustrated by examples of two land registers - Čenkov and Komárov.
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Countryside Phenomenon of New Wilderness
Skálová, Michaela ; Sádlo, Jiří (advisor) ; Matoušek, Václav (referee)
Existence of the so called "new wilderness" in the Czech as well as in the European cultural landscape definitely presents an interesting discussion topic. This diploma thesis aims for describing suburbial environment as a new type of landscape, its structure, dynamics and landscape memory. Three localities in the area of Prague were chosen as subject of the research, which were described mainly with the focus on biological components and results of interactions between man and nature. Special attention was paid to the segments of landscape with a secondarily weakened human influence, which were named "new wilderness". Such places were assessed from the point of view of the present state, possibilities of further development and use of components of landscape memory. The main studied locality was "Podhorí" (cadastral area of Bohnice and partially Troja), where anthropogenic relicts such as terraces, walls, house basements, water sources as well as anthropogenic plantings were surveyed by means of GPS and marked in maps. The map of these anthropogenic elements helped us make comparison with the present state of the locality and achieve a more complex complementary viewpoint, where the subject of interest is nature without the former intensive influence of a man (without a preliminary evaluation, neither...
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Methods of mapping and monitoring invasive (selected alien) species - monitoring
Pergl, Jan ; Dušek, J. ; Hošek, M. ; Knapp, M. ; Simon, O. ; Berchová, K. ; Bogdan, V. ; Černá, M. ; Poláková, S. ; Musil, J. ; Sádlo, Jiří ; Svobodová, J.
The project aims at problematic invasive species and their prioritization. In the methods we define several groups of aliens for monitoring. In the project are shown the rough financial costs.
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