|
|
Ombrotrophy and minerotrophy of acidic wetlands - ecological and environmental indicators
Hanousková, Andrea ; Neustupa, Jiří (advisor) ; Šťastný, Jan (referee)
In this thesis I focus on different aspects of two basic types of peatlands - ombrotrophic bogs and minerotrophic fens, that differ in the source of their water supplies. In case of the bogs, all the moisture comes from precipitation, the fens are in varying degrees supplied with water from the mineral soil and bedrock. This concept is based on the assumption that hydrological conditions are essential for other properties of acidic wetlands, especially for vegetation, which is still the subject of discussion. Therefore I mention different gradients of peatlands (pH, nutrients and minerals) and important processes (succession, accumulation of peat) with regard to their relation to minerotrophy and ombrotrophy and I discuss their importance for the entire ecosystem. In the second part of my thesis, I focus on the algal assemblages in peatlands, which despite its immense diversity often form a neglected component of these ecosystems. The structure of algal communities vary in space and time under the influence of various factors, including, among others, ombrotrophy and minerotrophy. Powered by TCPDF (www.tcpdf.org)
|
|
|
Ombrotrophy and minerotrophy of acidic wetlands - ecological and environmental indicators
Hanousková, Andrea ; Neustupa, Jiří (advisor) ; Šťastný, Jan (referee)
In this thesis I focus on different aspects of two basic types of peatlands - ombrotrophic bogs and minerotrophic fens, that differ in the source of their water supplies. In case of the bogs, all the moisture comes from precipitation, the fens are in varying degrees supplied with water from the mineral soil and bedrock. This concept is based on the assumption that hydrological conditions are essential for other properties of acidic wetlands, especially for vegetation, which is still the subject of discussion. Therefore I mention different gradients of peatlands (pH, nutrients and minerals) and important processes (succession, accumulation of peat) with regard to their relation to minerotrophy and ombrotrophy and I discuss their importance for the entire ecosystem. In the second part of my thesis, I focus on the algal assemblages in peatlands, which despite its immense diversity often form a neglected component of these ecosystems. The structure of algal communities vary in space and time under the influence of various factors, including, among others, ombrotrophy and minerotrophy. Powered by TCPDF (www.tcpdf.org)
|
|
|
Comparison of biodiversity in managed forest and in natural mountain forest - indicators of biodiversity
BARBORKOVÁ, Jana
Bachelor thesis deal with biodiversity in managed forests and in natural mountain forests. In the literature review discussions causes of the decrease of biodiversity in forests affected by anthropogenic activities. Further points to the importance of dead wood in a natural forest ecosystem. There is discussed effect of clear-cut mining on the microclimate of the certain habitat and biodiversity (significant microbiotops invertebrates). As bioindicators of anthropogenic impact on the forest are proposed bioindicators changes of biodiversity, in our case epigeic beetles (especially ground beetles and rove beetles). Own survey contains on epigeic invertebrates beetles of managed forest in Klatovy (Černíč)
|
guest ::
