Sökning: "bestånd"
Visar resultat 11 - 15 av 32 avhandlingar innehållade ordet bestånd.
11. The spatial structure of genetic and morphometric variation in Corylus avellana (Betulaceae): pattern and scale
Sammanfattning : In the present thesis, I investigated the spatial structure of genetic and morphometric variation in the widespread wind-pollinated shrub Corylus avellana (L.) Betulaceae, hazel, and related the variation to geographic distribution and different spatial scales. LÄS MER
12. The Growth of External Ectomycorrhizal Mycelia in the Field in Relation to Host Nutrient Status and Local Addition of Mineral Sources
Sammanfattning : A method based on ingrowth mesh bags was developed to study the production of EMM. These bags were made of nylon mesh with a mesh size of 50 mu-m, which allows colonisation by fungal mycelia but excludes the tree roots. LÄS MER
13. Local adaptive pigmentation in Asellus aquaticus -effects of UV-radiation and predation regime
Sammanfattning : Pigmentation in the freshwater isopod Asellus aquaticus differed between two habitats. Asellus were lighter pigmented in stands of submerged stonewort vegetation, than in nearby reed stands. Moreover, Asellus pigmentation became lighter with time in recently established stonewort stands. LÄS MER
14. Vakanser på bostadsmarknaden : i praktik och teori
Sammanfattning : Denna licentiatavhandling handlar om lediga hyreslägenheter. I avhandlingens första del beskrivs och analyseras dels hur problemet med lediga lägenheter ser ut på den svenska bostadshyresmarknaden under åren 1990-1994 och dels hur problemet hanteras av svenska kommunala bostadsföretag. LÄS MER
15. 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