Sökning: "nitrogen fertilization"

Visar resultat 1 - 5 av 45 avhandlingar innehållade orden nitrogen fertilization.

  1. 1. Perturbance and Stimulation : using Nitrogen Addition and High-Throughput Sequencing to Study Fungal Communities in Boreal Forests

    Författare :Andreas N. Schneider; Nathaniel Street; Vaughan Hurry; Torgny Näsholm; Colin Averill; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Boreal forest; Scots pine; Norway spruce; ectomycorrhiza; saprotroph; fertilization; nitrogen; mycobiome; rhizosphere; decomposition; carbon; seedling establishment; forest management; clearcutting;

    Sammanfattning : Fungal communities are major players in globally important nutrient cycling processes, and form symbioses with most terrestrial plants. In the nitrogen (N) limited Swedish boreal forest, ectomycorrhizal (EcM) fungi colonize most roots of the economically important and stand dominating conifer species, Norway spruce (Picea abies) and Scots pine (Pinus sylvestris), with significant implications for tree nutrition and decomposition processes. LÄS MER

  3. 2. Effects of forest fertilization on soil microorganisms

    Författare :Kristina Arnebrant; Biologibiblioteket; []
    Nyckelord :LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; forest soil; nitrogen fertilization; microfungi; ectomycorrhiza; ATP; microbial biomass; nitrogen translocation; pine; alder; Frankia;

    Sammanfattning : .... LÄS MER

  4. 3. Nutrient Limitation of Bacterial Growth in Soil

    Författare :Fredrik Demoling; Biologiska institutionen; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ekologi; Ecology; Fertilization; Bacteria; Soil; Fungi; Thymidine or Leucine incorporation; Growth limitation; Phosphorus; Nitrogen; Carbon;

    Sammanfattning : Lack of carbon has been assumed to be the most common limiting factor for bacterial growth in soil, although there are reports of limitation by nitrogen and phosphorus. I have studied nutrient limitation of bacterial growth in soil using a novel technique, where thymidine or leucine incorporation is used to detect changes in growth rates after adding nutrients. LÄS MER

  5. 4. Peatlands at a Threshold: Greenhouse Gas Dynamics in a Changing Climate

    Författare :Magnus Lund; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; chamber; greenhouse gas; nitrous oxide; methane; carbon dioxide; carbon; bog; Peatland; mire; eddy covariance; nitrogen; phosphorus; fertilization;

    Sammanfattning : To be able to predict the strength of climate change and its consequences for mankind, it is of major importance to understand the contemporary greenhouse gas exchange of the terrestrial biosphere, as well as its response to changes in climate. To achieve such understanding both descriptive studies and manipulation experiments are required. LÄS MER

  7. 5. Snowbed Biocomplexity: a Journey From Community to Landscape

    Författare :Robert G. Björk; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Alpine; arctic; climate change; fertilization; global change; microbial activity; microbial community; nitrogen; plant community; plant diversity; scales; snow; soil; tundra;

    Sammanfattning : .... LÄS MER