Sökning: "moderate productivity sites"
Hittade 4 uppsatser innehållade orden moderate productivity sites.
1. Comparison of native and introduced tree species in a range from low to high productivity sites in southern Sweden
Master-uppsats, SLU/Southern Swedish Forest Research CentreSammanfattning : The dilemma of climate change, biodiversity conservation and economic efficiency in nowadays forestry leads us to search for the new solutions. Introduction of non-native tree species becomes a more frequently explored field as a solution for the future problems. LÄS MER
2. A study of carbon, nitrogen, and biogenic silica concentrations in Cyperus papyrus, the sedge dominating the permanent swamp of the Okavango Delta, Botswana, Africa
Master-uppsats, Lunds universitet/Geologiska institutionenSammanfattning : Okawangodeltat är södra Afrikas största våtmark och en av världens minst påverkade våtmarker. Kunskapen om hur våtmarkssystemet fungerar är begränsad, särskilt vad gäller halter av näringsämnen och omsättning av näringsämnen i de dominerande våtmarksväxterna. LÄS MER
3. The effects of livestock grazing on semi-natural grassland communities along an elevational gradient in Norway
Master-uppsats, Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : Moderate livestock grazing is often identified as a useful management tool for sustaining biodiverse grassland communities and has long been practiced in Scandinavian mountains. Despite of a growing number of studies focusing on grazing effects along elevational gradients worldwide, there is still limited knowledge of how grazing intensity varies over time and how it affects plant communities on species and functional group level. LÄS MER
4. Land Surface Phenology as an indicator of performance of conservation policies like Natura2000
Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskapSammanfattning : Considering the growing pressure on various ecosystems all around the world, the development of ecological indicators for assessing the health and condition of the ecosystems has become an integral part of environmental management and policy making efforts. Such indicators do not only simplify the complex ecosystem processes but can also act as a measure of performance of a conservation policy. LÄS MER