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  • Author: Luboš Úradníček x
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The Survival and Growth Rates of Woody Vegetation in the Man-Made Vracov Biocorridor During the Period of 1993-2007

The first biocorridors were established in the territory of the Czech Republic in the nineties of the 20th century. One of them, planted on a formed agricultural land, was the Vracov biocorridor. This paper deals with the growth and development of trees on two permanent research plots in the period of 1993 to 2007. Repeated inventories of trees as well as monitoring of biometrical parameters were carried out there in both, the tree and shrub layers. The number of trees decreases with the increasing level of stand canopy. Moreover, mean heights and diameters of Quercus robur, Tilia cordata and Cerasus avium were compared. Under the given conditions, the growth of these tree species can be positively evaluated.

Abstract

An increasing number of people all around the world have become interested in remarkable and magnificent trees in recent years. Accessible databases of champion trees are available. Unfortunately, the Czech Republic does not have a single database of remarkable or champion trees. We have old tradition to find and describe an old and monumental trees in our country. In 1899 the first book was issued about it. Many of the biggest specimens are already registered in the Monumental Trees database, which is run by the Nature Conservation Agency of the Czech Republic, registered a total of 25,598 memorable trees in 2017. Not all remarkable or champion trees are designated as memorable. Due too we present the known data on champion trees in an independent checklist. There are shown 116 species of trees with their girth and other information as height, GPS coordinate etc. from various sources. This checklist is a basis for a future one national database. When comparing the champion trees of the Czech Republic with the databases of other European states, particularly that of Monumental Trees, it emerges that we are not far from coming first. The Czech champion tree, Vejda's Lime Tree in Pastviny (Tilia platyphyllos Scop.) measured 1,305 cm at girth in 2015. We would like to prepare one integrated Czech database of remarkable trees and champion trees by help of the Professor August Bayer Foundation as soon as possible.

Czech Approach to Implementation of Ecological Network

An ecological network in the landscape consists of all existing and proposed landscape segments of ecological significance that can contribute to the conservation of landscape biodiversity. The concept of creation of territorial systems of ecological stability applied in the Czech Republic corresponds to the latest landscape ecological knowledge and landscape planning procedures used abroad. Biocorridors interconnect biocentres thus enable migration, interactions and permeability of landscape for organisms. Unlike biocentres, they don't need to provide for a permanent existence of all species of the represented communities. Thanks to the interconnection of biocentres by means of biocorridors there is an ecological network forming in the landscape. Development of the local biocorridor Vracov and the regional biocorridor Věstonice in south Moravia is presented.

Abstract

Urban trees generate numerous ecosystem services, and these are often closely associated with the species, age and size of trees as well as with their vitality. Generally, the focus of urban and regional planning is aimed at very large trees, because very large trees are considered to be key green structures in an urban green infrastructure. However, there is a significant knowledge gap related to the importance of young trees in cities, despite their value in urban green spaces, greenways, parks, gardens, urban forests, and as components of green roofs and green walls. This study is the result of field mapping young trees in the urban area of the famous European historical city of Prague. Field mapping revealed a total of 40 individual young trees, or young tree groups, with cultural value in the study area of Prague. The results of this empirical study indicate that young trees (not just very large and old trees) can be very important structures for the provision of cultural ecosystem services in cities, and that they can be viewed as living cultural symbols. This is a new aspect in the awareness of the environmental and social roles of urban trees. This case study from Prague suggests that (i) young trees in urban areas need more attention from researchers and (ii) should be incorporated into urban planning as an important component of urban green infrastructure.

Abstract

The paved (tarmac) roads had been constructed on Soqotra island over the last 15 years. The vegetation along the roads was disturbed and the erosion started immediately after the disturbance caused by the road construction. Our assumption is that biotechnical measurements should prevent the problems caused by erosion and improve stabilization of road edges. The knowledge of plant species which are able to grow in unfavourable conditions along the roads is important for correct selection of plants used for outplanting. The vegetation succession was observed using phytosociological relevés as a tool of recording and mapping assambblages of plants species along the roads as new linear structures in the landscape. Data from phytosociological relevés were analysed and the succession was characterised in different altitudes. The results can help us to select group of plants (especially shrubs and trees), which are suitable to be used as stabilizing green mantle in various site conditions and for different purposes (anti-erosional, ornamental, protection against noise or dust, etc.).

Abstract

Ancient coppice woodlands are coppice-originated forest stands with a long-term continual development, and with the preserved typical natural and historic elements of old sprout forests. Prominent natural elements in the ancient coppice woodlands are namely old coppice stools. There is, in scientific literature, lack of information about features of ancient coppice stools. Therefore, our contribution aims to describe shape and form of ancient coppice stools, including the most important microhabitat of coppice woodlands – dendrothelms. Based on field survey of 20 localities of important coppice woodlands we recorded 135 ancient coppice stools of 13 tree species and a total of 80 dendrothelms in 9 tree species. Basic features of ancient coppice stools and dendrothlems were measured and evaluated.

Abstract

The first biocorridors were established in the territory of the Czech Republic in the 1990s. One of them, planted on a former agricultural land, was the Radějov biocorridor. This paper deals with the growth and development of trees and shrubs on three permanent research plots in 1993 - 2012. Repeated inventories of trees as well as monitoring of their biometrical parameters were carried out in both tree and shrub layers. The number of trees decreases with the increasing level of stand canopy. Moreover, mean heights, diameters and crown projection areas of selected woody plants were compared. Under the given conditions, the growth of these woody plants can be positively evaluated.

Abstract

Ancient coppice woodlands are coppice-originated forest stands with a long-term continual development, and with the preserved typical natural and historic elements of old sprout forests. Prominent natural elements in the ancient coppice woodlands are namely old coppice stools. There is, in scientific literature, lack of information about features of ancient coppice stools. Therefore, our contribution aims to describe shape and form of ancient coppice stools, including the most important microhabitat of coppice woodlands - dendrothelms. Based on field survey of 20 localities of important coppice woodlands we recorded 135 ancient coppice stools of 13 tree species and a total of 80 dendrothelms in 9 tree species. Basic features of ancient coppice stools and dendrothlems were measured and evaluated.