Sökning: "bank vole"
Visar resultat 1 - 5 av 7 uppsatser innehållade orden bank vole.
1. Pärlugglebeläggning i förhållande till sorktillgång över en klimat-och landskapsgradient
Kandidat-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : Smådäggdjur har inventerats i Västerbottens län sedan 1971. Inventeringen genererar bakgrundsdata över populationsdynamik hos smådäggdjur, vilket används för tolkning av populationsförändringar i kringliggande trofiska nivåer. LÄS MER
2. Prevalence of Borrelia burgdorferi sensu latu in rodents from two areas with varying wild ungulate densities in Southern Sweden
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : On a global scale, zoonotic vector-borne diseases pose an increasing threat towards human health. In Europe, the haemotophagous ectoparasite sheep tick (Ixodes ricinus) acts as a pathogen vector for diseases like tick-borne encephalitis and Lyme disease with increasing annual incidences during the last decades. LÄS MER
3. Prevalence of Puumala virus (PUUV) in bank voles (Myodes glareolus) after a major boreal forest fire
Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : Our knowledge on the impact of forest fires on the prevalence (proportion of infected individuals in a population) and dynamics of zoonotic pathogens is largely limited. A large forest fire in late 2006 at Bodträskfors in northern Sweden provided a unique opportunity to investigate the effect of habitat change on disease prevalence. LÄS MER
4. Abundance and diversity of small mammals in Swedish beaver systems
Magister-uppsats, SLU/Dept. of Aquatic Sciences and AssessmentSammanfattning : Through their ecosystem engineering activities, beavers (Castor fiber ) create ponds and riparian zones littered with deadwood, providing hetero- geneous micro-habitats for a variety of small mammal species. In this study small mammals were snap-trapped in nine beaver systems and four reference wetland systems that were not created by beavers in southern and central Sweden to compare abundance and diversity of voles, shrews and mice. LÄS MER
5. Grey-sided vole and bank vole abundance in old-growth forest patches of different size and connectivity
Kandidat-uppsats, SLU/Dept. of Wildlife, Fish and Environmental StudiesSammanfattning : Vole populations in northern Scandinavia vary in cycles with peaks every third or fourth year as described by the National Environmental Monitoring Programme of small mammals (NEMP). Some vole species have declined in population numbers since the NEMP started in 1971, especially the grey-sided vole (Myodes rufocanus) which is nearly extinct in the forested region. LÄS MER