Sökning: "plant community"
Visar resultat 1 - 5 av 199 avhandlingar innehållade orden plant community.
1. Snowbed Biocomplexity: a Journey From Community to Landscape
Sammanfattning : .... LÄS MER
2. Grassland restoration : Connectivity, plant community change and cows
Sammanfattning : The ecological significance of semi-natural grasslands is high because these habitats provide a home for a diverse flora and fauna and support a range of associated ecosystem services. Due to large-scale land-use changes the extent of grassland habitat has declined. LÄS MER
3. Herbivory and plant community structure in a subarctic altitudinal gradient
Sammanfattning : The object of this thesis was to study plant community structure, especially in relation to vertebrate herbivory, in an altitudinal gradient in the Fennoscandian mountain chain.A sowing experiment in a high alpine Ranunculus glacialis population showed that seeds germinated better in cleared microsites than under established individuals. LÄS MER
4. Plant community assembly in grazed grasslands
Sammanfattning : Species assembly into local communities from the surrounding region can be caused either by species failure to reach the site (i.e. seed limitation) or to establish (i.e. LÄS MER
5. Herbivores influence nutrient cycling and plant nutrient uptake : insights from tundra ecosystems
Sammanfattning : Reindeer appear to have strong positive effects on plant productivity and nutrient cycling in strongly nutrient-limited ecosystems. While the direct effects of grazing on vegetation composition have been intensively studied, much less is known about the indirect effect of grazing on plant-soil interactions. LÄS MER