Sökning: "sedge"
Visar resultat 1 - 5 av 11 uppsatser innehållade ordet sedge.
1. 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
2. Assessment of how environmental variables and vegetation structure influence peatland carbon fluxes
Master-uppsats, Uppsala universitet/Växtekologi och evolution; Uppsala universitet/Institutionen för biologisk grundutbildningSammanfattning : Boreal peatlands are important ecosystems from a carbon balance perspective because they are natural carbon sinks as a result of millennia of peat formation. However, due to climate change, these ecosystems are susceptible to changes in hydrology and temperature. LÄS MER
3. Microbial community responses to freeze : thaw cycles in active layer soils of permafrost tundra, Disko Island, Greenland
Master-uppsats, SLU/Dept. of Soil and EnvironmentSammanfattning : Permafrost affected soils are a vast pool of Carbon, storing around 1300Pg below the ground. As a result of climate change, permafrost soils that have been frozen for thousands of years are thawing, causing the ancient organic matter to be metabolised by microorgan-isms. LÄS MER
4. Vegetation responses to summer- and winter warming : flower power in the Alaskan tussock tundra?
Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskapSammanfattning : Plants have an important role in the tundra carbon (C) cycle by storing C in primary production and thus potentially counteract the C released from thawing permafrost. Tundra vegetation is limited by nitrogen (N), which is predicted to increase with rising temperatures and increased snow depth. LÄS MER
5. Using plants to remediate wastewater produced from the cleaning process of blasted rock materials
Master-uppsats, Stockholms universitet/Institutionen för ekologi, miljö och botanikSammanfattning : Water pollution is one of society’s most crucial issues which has a negative impact on water quality. The cleaning of blasted rock materials is a process which produces wastewater containing nitrogen and other pollutants such as heavy metals due to explosives residue from blasting. LÄS MER