|
|
The ability of plants to indicate abiotic environmental conditions
Lebedová, Michaela ; Chuman, Tomáš (advisor) ; Šefrna, Luděk (referee)
The occurrence of different plant species is influenced mainly by individual environmental factors such as light, heat, soil reaction or nutrient content. The knowledge of the relationships between the plant species and the mentioned ecological factors, allows us to estimate the ecological properties of the habitats in which these species grow without the need of direct measurements. The aim of this thesis was to review the literature on the ability of different plants to indicate abiotic environmental conditions and to verify it on selected soil properties (soil nitrogen and phosphorus content, soil reaction) at sites where both soil sampling and analysis and phytocenological relevés were collected. Tabulated Ellenberg's indicator values were assigned to recorded species from 14 catchments of the GEOMON network. The tightness of the relationship between the indicator values and the measured data was examined in several soil layers defined as: L, FH, 0-10, 10-20, 20-40 a 40-80 cm and phytocenological relevés of different size: A - 400 m2 , B - 40 m2 a C - 4 m2 . The results showed that the data correlated best in the soil layer FH and the strongest relationship was found between the average Ellenberg's indicator values from phytocenological catchments C with an active soil reaction. Keywords:...
|
|
|
Plants as indicators of soil properties
Doležal, Jan ; Chuman, Tomáš (advisor) ; Šefrna, Luděk (referee)
Soil will be more important natural resource in the future, soil is degradation due to organic matter depletion, soil acidification and nutrient leaching, soil erosion, soil sealing is still ongoing. The local vegetation can serve as an estimate of habitat properties, these properties may highlight the ongoing processes in the soil. The ability of plants to indicate soil properties are described in a variety of species. The first part of this work is a review of literature which is dealing with plant indicators and the practical part is to evaluate the tightness of the relationship between selected soil properties and their values derived on the basis of the indicator species composition in two selected river basins. Keywords: flora, phytoindication, soil, vegetation, ellenberg indicator values, GEOMON river basin
|
|
|
Contribution to the changes and evaluation of vegetation on landslides and to the problematic of their phytoindication
Lacina, Jan
Relationships between landslides and vegetation cover were studied in Moravian part of Western Carpathian Mountains on selected plots which were affected by landslides evoked by extreme floods in July 1997. It was founded that landslides rises under various vegetation formation – forestal and non-forestal as well. Landslides change ecological conditions for vegetation markedly. A number of species are bounded to landslides, e.g. Equisetum telmateia, which is possible to identify like landslides guides, don’t like phytoindicators.
|
guest ::
