Sökning: "Picea abies"
Visar resultat 21 - 25 av 178 avhandlingar innehållade orden Picea abies.
21. Adaptive Evolution and Demographic History of Norway Spruce (Picea Abies)
Sammanfattning : One of the major challenges in evolutionary biology is to determine the genetic basis of adaptive variation. In Norway spruce (Picea abies) the timing of bud set shows a very strong latitudinal cline despite a very low genetic differentiation between populations. LÄS MER
22. Biotransformations of Turpentine Constituents : Oxygenation and Esterification
Sammanfattning : This thesis describes methods to obtain valueaddedcompounds from TMP-turpentine obtained from the spruce, Piceaabies. The methodology focuses on biotransformations using twoapproaches: an oxygenation approach (i.e. oxygenation ofterpene hydrocarbons by cell cultures) and an esterificationapproach (i. LÄS MER
23. Neutral and Adaptive Processes Shaping Genetic Variation in Spruce Species
Sammanfattning : Population genetic analyses can provide information about both neutral and selective evolutionary processes shaping genetic variation. In this thesis, extensive population genetic methods were used to make inferences about genetic drift and selection in spruce species. LÄS MER
24. Extraction of logging residues for bioenergy : effects of operational methods on fuel quality and biomass losses in the forest
Sammanfattning : Wood products play a key role in the transformation to a more sustainable society based on renewable bio-based resources, together with the positive effects on climate mitigation by replacing fossil fuels. However, to increase the use of forest fuel in practice it is important to understand the effects of handling and storage on its quality and removal of nutrients from the forest. LÄS MER
25. The Vertical Distribution of Roots, Mycorrhizal Mycelia and Nutrient Acquisition in Mature Forest Trees
Sammanfattning : The vertical distribution of the nutrient uptake of Norway spruce (Picea abies (L.) Karst.), European beech (Fagus sylvatica L.) and pedunculate oak (Quercus robur L. LÄS MER