Sökning: "decomposer ecology"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden decomposer ecology.

  1. 1. Effects of enhanced ultraviolet-B radiation on subarctic ecosystems

    Författare :Carola Gehrke; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; pigmentation; photosynthesis; dark respiration; shoot morphology; shoot growth; phanerogams ; species composition cryptogams; productivity; decomposition; dwarf shrubs; bryophytes; peatland ecosystem; heath ecosystem; UV-B; ozone depletion; Plant ecology; Växtekologi;

    Sammanfattning : Biologically harmful ultraviolet-B radiation (UV-B, 280-320 nm) is increasing at the Earth´s surface owing to stratospheric ozone depletion. This is of global concern due to potential impacts of enhanced UV-B radiation on the biosphere. LÄS MER

  3. 2. Functional ecology of ectomycorrhizal fungi : peroxidases, decomposition, spatial community patterns

    Författare :Inga Bödeker; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Boreal forest ecosystems constitute a globally important carbon (C) sink, due to accumulation of complex organic matter, persistent to decomposition. Nitrogen (N) is immobilized in these complex compounds and, thereby, unavailable to the plant community. LÄS MER

  4. 3. The interaction between carbon and nitrogen during litter decomposition

    Författare :Linnea Berglund; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Litter decomposition is essential for the cycling of elements in ecosystems. How carbon (C) and nitrogen (N) interact during litter decomposition is, however, not yet fully understood. This thesis studies litter decomposition with the aim of increasing our understanding of the interactions between C and N. LÄS MER

  5. 4. Regulation of litter decomposition in forest ecosystems of Sweden and New Zealand

    Författare :Benjamin Jackson; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Litter decomposition is a core ecosystem process critical for carbon and nutrient cycling, and the functioning of terrestrial ecosystems. This thesis explores two contrasting ways by which plants can influence litter decomposition in forested ecosystems. LÄS MER

  7. 5. A song of ice and mud : Interactions of microbes with roots, fauna and carbon in warming permafrost-affected soils

    Författare :Sylvain Monteux; Ellen Dorrepaal; Frida Keuper; James T. Weedon; Joshua Schimel; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; microbial communities; permafrost; functional limitations; rhizosphere; SOM decomposition; soil fauna; climate change; carbon dioxide;

    Sammanfattning : Permafrost-affected soils store a large quantity of soil organic matter (SOM) – ca. half of worldwide soil carbon – and currently undergo rapid and severe warming due to climate change. LÄS MER