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National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Jeřáb ptačí jako krajinotvorný prvek v NPR Praděd (CHKO Jeseníky)
 Remešová, Miroslava
The present thesis explores the mountain ash population in a selected part of Praděd National Nature Reserve, hunting grounds of Karlov and Malá Morávka. The research was carried out in an area of 665 ha, in elevations ranging from 950–1463.7 metres. The structure of the adult population of the mountain ash (generative organs, thickness and height structure) was described, the density of its rejuvenation was assessed focusing on the quantification of damages due to browsing. The results imply that the area is populated by a sufficient number of specimens that are capable of generative reproduction, as well as by a sufficient number of seedlings which do not grow up due to browsing. A management of the mountain ash population was suggested, aiming at the maximum use of the high population of natural rejuvenation. The thesis also deals with the assessment of the area landscape character. The projected landscaping in the locality of Ovčárna uses the mountain ash as a landscape-forming element.
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Populace smrku ztepilého při horní hranici lesa v Hrubém Jeseníku
 Šenfeldr, Martin
This dissertation presents research results of Norway spruce (Picea abies L. Karst) populations in timberline ecotone of the Hrubý Jeseník Mts. The work is presented in the form of five scientific articles, 3 of which are accepted for publication, or already printed. Two articles are in the form of submitted manuscripts. The first article describes the biometric and age structure of spruce populations, including the assessment of the possibility of their vegetative as well as seed-based reproduction and compares these characteristics between two vertically connected sections of timberline ecotone. The second article analyzes the influence of dwarf pine stands of different cover on the ability of vegetative reproduction of spruce and their height growth. The third article deals with the historical dynamic of spruce trees establishment within timberline ecotone. This are correlated with both temperature characteristics and agricultural land abandonment during the last 100 years. The fourth article deals with measurements of the quantity and directions of sap flow in layering branches as well as parent and daughter trees in Norway spruce clonal groups. The article evaluates the importance of sap flow quantity in layering branch to the total amount of water use by parent and daughter trees. The fifth article substantially extends the fourth article of measurements on more interconnected tree pairs within a longer time series. Additionally, this article includes the drought stress experiment in the daughter tree and subsequent monitoring of changes in sap flow in layering branch.
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Analýza populace smrku na horní hranici lesa v NPR Praděd
 Šenfeldr, Martin
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