Search for dissertations about: "Microtopography"
Showing result 1 - 5 of 8 swedish dissertations containing the word Microtopography.
-
1. Resistance and recolonization of bryophyte assemblages following disturbances : - detecting patterns and exploring mechanisms
Abstract : Disturbances are ubiquitous features of most northern forest ecosystems. The subsequent response of plant assemblages on both short (resistance or not) and long term (recolonization or not) will depend on a number of factors operating at several spatial scales. READ MORE
-
2. Peatland dynamics in response to past and potential future climate change : A regional modelling approach
Abstract : The majority of the northern peatlands developed during the Holocene as a result of a positive mass balance between net primary productivity (NPP) and heterotrophic decomposition rates. Over that time they have sequestered a huge amount of carbon in terrestrial ecosystems. READ MORE
-
3. Pattern and process in Alpine communities of the Northwestern Caucasus
Abstract : Patterns in vegetation reflect certain processes affecting plant communities. The present work aims at describing patterns and revealing mechanisms operating in alpine vegetation belonging to four vegetation types: alpine lichen heaths, Festuca varia grasslands, Geranium-Hedysarum meadows and snowbed communities. READ MORE
-
4. Friction and Wear Mechanisms of Ceramic Surfaces : With Applications to Micro Motors and Hip Joint Replacements
Abstract : Surfaces exposed to wear always transform and typically a layer of new structure and composition is formed. This layer, often called tribofilm, changes the friction and wear properties. READ MORE
-
5. Boreal mire carbon exchange : sensitivity to climate change and anthropogenic nitrogen and sulfur deposition
Abstract : Boreal peatlands are important long-term sinks of atmospheric carbon and in the same time the largest natural source of methane to the atmosphere. A changing climate as well as deposition of anthropogenically derived pollutants, such as nitrogen and sulfur, has the potential to affect the processes that control the carbon exchange in peatlands. READ MORE