|
|
Sensitivity of Czech provenances of European common ash and narrow-leaved ash to invasive pathogen Hymenoscyphus fraxineus
Kraus, Marek ; Pešková, Vítězslava (advisor) ; Čížková, Dana (referee)
This thesis deals with a survey of provenance areas and assessment of attacking Fraxinus excelsior L. and Fraxinus angustifolia by the pathogen Hymenoscyphus fraxineus.
The aim of the thesis is to map the incidence of infected trees in these areas and to evaluate the sensitivity of the sites to the pathogen Hymenoscyphus fraxineus.
The theoretical part deals with processing of data collected during field work on selected provenance areas Koneprusy and Veltruby. Amongst the evaluated parameters there were: trunk diameter at measuring height, tree height, and especially canopy drying caused by Hymenoscyphus fraxineus. As the outcome of the survey photographs were taken and records were collected for individual trees in the provenance areas. Each of the trees has its own unique label that has accurately defined its location to prevent potential errors in data processing. The processed data was then evaluated in NCSS 8.0 software and cluster analysis was performed in order to compare the provenances. This analysis only compares the provenances, which are located in both provenance areas. The results show that no provenance without the pathogen Hymenoscyphus fraxineus attack appeared in the provenances Koneprusy and Veltruby. Subjects in 4 ŠLP Kostelec nad Černými Lesy - Svojšice and 24 LS Czech Krumlov Chvalšiny proved to be more resistant than others. Although the increase in the tree height and the trunk thickness is the largest on those areas the defoliation rate is high. It is probable that the population of these provenances will gradually die. Due to growing abbility of some individuals located in other provenances it is obvious that habitat conditions and individual resilience are key factors.
|
|
|
Use of an X - ray fluorescence analysis for the ceramics of the La Tene period
KREJČÍ, Radim
In my bachelor thesis I try to clarify aspects of the use of an x-ray fluorescence analysis method in the study of a composition of the ceramics and its provenance. I try to gather information about this method, as well as its pluses and minuses, by means of study of domestic and especially international publications and projects dealing with this topic. Knowledge acquired is then used in the research during which I analyse chemical composition of South Bohemian ceramic with graphite admixture from the La Tene period and I try to discover its differences and thanks to that determine potential imports.
|
|
|
Vliv velikosti a krytí holiny na odrůstání kultur douglasky tisolisté
Paukovček, Michal
The aim of this diploma thesis was to determine what influence has a different size (cover) of clearing on growing cultures after the third growing season, time of planting and a type of planting material. The reaserch was realized on clearings with dimensions 55 x 70 m, 25 x 70 m, in Podsadba and on a big Kalamitná clearing (4,4 ha). There were used four provenances with or without an adjustment of root system. 10 parameters and signs were measured and recorded on each individual tree. Observed values were statistically evalueted and written comment was added. The results of reaserch confirmed that minor restoration elements are more suitable for culturing Douglas Fir as they provide a favourable microclimate. In these areas are lower losses and plants show a greater increase in aboveground part. In terms of time of planting, the most suitable appeared in the early spring planting dates. The adjustment of root system before planting had a negative effect because treated seedlings had lower gain and the losses were on average higher.
|
|
|
Vliv velikosti a expozice holiny na růst kultur douglasky tisolisté
Janoušková roz. Schindlerová, Hana
The aim of the study was to determine the effect on the growth of the cultures after the second growing year (coverage) and exposure of clearcuts, seed time and type of used planting material.Totally was measured on four areas - high fence (60x70 m), chopped (25x70 m), underplanting and the large calamity clearcuts. There were represented four different provenance and they were with or without modification of the root system, which were planted in six different dates (spring - autumn). Monitoring and evaluation were especially following features: losses, length of aboveground, increase of the terminal, root collar thickness, length and number of branches, length of needles, color of assimilation system, damage by biotic and abiotic factors. The results of my thesis confirmed that it is best to Douglas fir planted on small regenerative elements with adequate cover of surrounding vegetation. These areas register lower losses and higher increment of above-ground parts. The best planting date is in early spring. It also has confirmed great variability in the requirements for each provenance and Douglas sensitivity to drought. Effect of modification of the root system appears to be minimal.
|
|
| |
|
| |
|
| |
|
| |
|
|
The so-called Madonna from Bítov - the Matter of Dating and Stylistic Provenance
BINDER, Jan
The topic of my bachelor´s thesis "So-called Madonna of Bitov - the issue of subsidies and style provenance" is a comparison of the unique sculptural monument with a chosen types of similar Czech and foreign monuments and finding at least a few solutions. The thesis also deals with implanting Madonna into a period, local and even art-historical context. It brings a detailed formal and iconographic description of the work and the author also solves the issue of restoration here.
|
|
| |
guest ::
