National Repository of Grey Literature 6 records found  Search took 0.00 seconds. 
Arachnofauna dutin hlavatých vrb
Boučková, Monika
The aim of this dissertation "Arachonofauna cavities of the head willows" was to find a cavity fauna that inhabits willow trees and point out the pollarding of willow trees as a suitable management for the formation of cavities. The chosen location for this research was Vojkovice near Židlochovice, where during the years 2018 – 2019 were examined 21 willow trees with the help of newspaper traps. Traps were always exchanged at monthly intervals. A total of 72 spiders were found, of which only 10 were adults. The most important finding of this work is the discovery of Midia midas (Simon, 1884), which represents a typical inhabitant of hollow fauna and is a highly endangered species. This finding indicates that willow cavities are also a refuge for rare species. Juvenile individuals were most represented in the Gnaphosidae family of 20 pieces. Most of the spiders found were synanthropic species, so they are close to humans.
Vliv duální mykorhizy na příjem těžkých kovů vybranými dřevinami čeledi Salicaceae
Kuchár, Michal ; Mrnka, Libor (advisor) ; Kolaříková, Zuzana (referee)
3.2. Abstract Soil contamination by heavy metals represents rather serious environmental problem for both human health and an environment itself. One of the perspective technologies dealing with this threat that only recently has been intensely developed is phytoremediation by means of short rotation coppice plantations. As plants used in this technology (mostly poplars and willows) host two major groups of mycorrhizal fungi substantially influencing plant physiology it is important to study plant-mycobiontheavy metals interactions rather than just plant-heavy metals interactions. The present thesis aimed to contribute to the growing knowledge of the field by search for suitable mycobionts of poplar or willow tolerant to heavy metals, by evaluating an activity of the key antioxidative enzyme in selected mycobionts and by looking at physiological responses of plant hosts to their mycobionts in a soil polluted by heavy metals. The first experiment in vitro focused on screening of morphometric criteria of fungi growing on solid growth media amended with mixture of heavy metals. Based on the results, several tolerant ectomycorrhizal strains were chosen for the next inoculation of fast growing trees serving phytoextraction and phytostabilisation strategies. The second, re-synthetic experiment was conducted in...
Exhibition proposal of wetland biotopes in the arboretum FFWS in Kostelci nad Černými lesy
Havránková, Zuzana ; Bažant, Václav (advisor) ; Janeček, Vladimír (referee)
This thesis deals with design of a new trees exposure in the arboretum in Kostelec nad Černými lesy, where model of wetland habitats will be created. Emphasis is placed on the supplement autochthonous species especially willow - Salix. A literature review provides information about Arboretum Kostelec nad Černými lesy and compositional principles. It is focused on wetlands, floodplain forest and it is willow communities. Thesis includes the characteristic of the area and it's natural conditions. Inventory of area were made in the practical part. Botanical survey detect current vegetation cover. The area of interest was evaluated from the botanical point of view. Evaluation of the health condition of trees was done to improve the condition of existing vegetation and habitat model layout. Treatment and the existing vegetation felling, was proposed. Map outputs of the research were processed in ArcGIS 10.1. Exposure design was drawn in AutoCAD 2016. List of recommended trees that is based on analysis of Czech and foreign sources was created. Pathway and information system for visitors that use the QR code was designed. The results of this thesis can be applied in practice in Arboretum Kostelec. Model of wetland habitats can be used for research and educational purposes.
The influence of genotype , habitats and agricultural technologies for producing energy wood phytomass selected
CHRT, Vladimír
This diploma thesis deals with the cultivation of fast-growing wood and concentrates on the influence of particular factors like e.g. location, agrotechnology and fertilizers, which have a crucial impact on the phytomass production. Moreover, the thesis evaluates the economic efficiency of this type of sustainable energy ressource, which can be a source of local business. Introductory theoretical chapters describe essentials rules of the cultivation of fast-growing wood. Furthermore the thesis presents general information in this field and proposes suitable wood clones. In addition, the thesis outlines the process of choice and preparation of the agricultural parcel, the usage of various fertilizes, herbicides and agrotechnology. The applied core characterises the business case itself. The primary research compares financial investment and its return of two examined agricultural parcels under the prerequisit of suitable choice of location and agrotechnology. A trail phase depictes the cultivation of fast-gworing wood and discuss presumptions for succesfull business. This thesis is mainly based on primary research. The acquired data are further analyzed and the final chapter attempts to outline the results and suggest measures.
The impact of deffensive host-plant traits on community structure of herbivorous insects on willows
VOLF, Martin
This study examines the role of deffensive host-plant traits in structuring the community of leaf-chewing insects living on willows. Host-plant phylogeny was reconstructed and leaf morphology and content of three different groups of secondary metabolites were measured. Relationships between defensive leaf traits were examined and their influence on insect community structure was analyzed.

Interested in being notified about new results for this query?
Subscribe to the RSS feed.