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Visar resultat 1 - 5 av 11 uppsatser som matchar ovanstående sökkriterier.

  1. 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 institutionen

    Författare :Giulia Lodi; [2022]
    Nyckelord :Okavango Delta; papyrus; total nitrogen; total organic carbon; biogenic silica; Earth and Environmental Sciences;

    Sammanfattning : 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. 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 grundutbildning

    Författare :Bernabé Ramírez; [2021]
    Nyckelord :;

    Sammanfattning : 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

  4. 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 Environment

    Författare :Isabelle Gough; [2019]
    Nyckelord :microbial ecology; active layer soils; bacteria; fungi; permafrost system; amplicon-sequencing; QIIME2; FUN-guild; ; greenhouse gas fluxes; fluorogenic enzyme as-says;

    Sammanfattning : 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

  5. 4. Vegetation responses to summer- and winter warming : flower power in the Alaskan tussock tundra?

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Maja Wressel; [2018]
    Nyckelord :Arctic vegetation; snow depth; warming; vertical root distribution; tundra;

    Sammanfattning : 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

  7. 5. Using plants to remediate wastewater produced from the cleaning process of blasted rock materials

    Master-uppsats, Stockholms universitet/Institutionen för ekologi, miljö och botanik

    Författare :Karin Nilsson; [2018]
    Nyckelord :blasted rock; tunneling; wetlands; phytoremediation; nitrogen;

    Sammanfattning : 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