Sökning: "Aspen"

Visar resultat 1 - 5 av 99 avhandlingar innehållade ordet Aspen.

  1. 1. Importance of tannins for responses of aspen to anthropogenic nitrogen enrichment

    Författare :Franziska Bandau; Benedicte Albrectsen; Michael Gundale; Lisbeth Josson; Umeå universitet; []
    Nyckelord :AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; LANTBRUKSVETENSKAPER; NATURAL SCIENCES; AGRICULTURAL SCIENCES; aspen; foliar condensed tannins; genetic variability; anthropogenic nitrogen enrichment; plant growth; plant defense; litter decomposition; Populus tremula; asp; kondenserade tanniner; genetisk variabilitet; antropogent kväve; tillväxt; växtförsvar; förna nedbrytning; Populus tremula; Environmental Science; miljövetenskap; ekologisk botanik; Ecological Botany; Entomology; entomologi; Physiological Botany; fysiologisk botanik; Population Biology; populationsbiologi;

    Sammanfattning : Boreal forests are often strongly nitrogen (N) limited. However, human activities are leading to increased N inputs into these ecosystems, through atmospheric N deposition and forest fertilization. LÄS MER

  2. 2. Embracing the data flood : integrating diverse data to improve phenotype association discovery in forest trees

    Författare :Bastian Schiffthaler; Nathaniel Street; Martin Rosvall; Nicolas Delhomme; Marek Mutwil; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; Systems Biology; Association Discovery; Genomics; Transcriptomics; Genome Assembly; Gene Networks; Forest Tree; Aspen; Spruce; biology; biologi;

    Sammanfattning : Complex traits represent valuable research targets as many highly desirable properties of plants and animals (such as growth rate and height) fall into this group. However, associating biological markers with these traits is incredibly challenging, in part due to their small effect sizes. LÄS MER

  3. 3. Deciduous tree occurrence and large herbivore browsing in multiscale perspectives

    Författare :Gunilla Cassing; Larry Greenberg; Christina Skarpe; Karlstads universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; aspen; rowan; sallow; GIS; browsing; landscape; forest management; Biology; Biologi;

    Sammanfattning : Aspen ( Populus tremula), rowan (Sorbus auquparia) and sallow (Salix caprea) are deciduous tree species of low economic value for forestry and contribute to biodiversity of boreal forests. The species are rare in managed forest landscapes, and severely browsed by moose. LÄS MER

  4. 4. Inorganic ions in wood chips- Leaching prior to Kraft pulping and effect of calcium on Kraft delignification

    Författare :Anna Saltberg; Chalmers University of Technology; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; modelling; calcium; Scandinavian softwood; Keywords: Kraft pulping; potassium; birch; eucalyptus; aspen; acidic leaching; oxalate.;

    Sammanfattning : Wood is the main source of Non-Process Elements (NPEs), such as, calcium, potassium, manganese and chloride in Kraft pulp mills. Due to the recirculation of cooking chemicals and water, process disturbances related to the accumulation of NPEs in the process streams are inevitable. LÄS MER

  5. 5. Characterization of acetylated hemicelluloses from hardwood

    Författare :Maria Nordström; KTH; []
    Nyckelord :acetyl; aspen; birch; chlorite delignification; degree of acetylation;

    Sammanfattning : .... LÄS MER