Sökning: "Bodil Elmhagen"

Hittade 4 avhandlingar innehållade orden Bodil Elmhagen.

1. 1. Interference competition between arctic and red foxes

   Författare :Bodil Elmhagen; Devra G Kleiman; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Terrestrial ecology; Terrestisk ekologi;

   Sammanfattning : In this thesis, I investigate the relationship between arctic foxes Alopex lagopus and red foxes Vulpes vulpes in Swedish mountain tundra habitat (fjällen). The arctic fox population was severely reduced by hunting in the early 20th century. LÄS MER

3. 2. Conservation, personality and ecology of the European mink (Mustela lutreola)

   Författare :Marianne Haage; Bodil Elmhagen; Anders Angerbjörn; Kaarina Kauhala; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; European mink; Mustela lutreola; Conservation; Personality; Individual specialism; Diet; American mink; Neovison vison; Intraguild competition; zoologisk ekologi; Animal Ecology;

   Sammanfattning : Loss of biodiversity is a growing problem and hence conservation of species is becoming increasingly important. In this dissertation conservation issues related to the critically endangered European mink (Mustela lutreola) are examined in situ (in the wild) and ex situ (in captivity) on both an individual and community level. LÄS MER

4. 3. To survive and reproduce in a cyclic environment – demography and conservation of the Arctic fox in Scandinavia

   Författare :Tomas Meijer; Anders Angerbjörn; Bodil Elmhagen; Claudio Sillero-Zubiri; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Conservation; life-history; Alopex lagopus; survival; zoologisk ekologi; Animal Ecology;

   Sammanfattning : This thesis concerns the conservation and life history of the Arctic fox (Vulpes lagopus) in Scandinavia. The Arctic fox was historically a widely distributed species in the Scandinavian mountain tundra with a population size of approximately 10 000 individuals during years with high resource availability, i.e. rodent peaks. LÄS MER

5. 4. Anthropogenic impact on predator guilds and ecosystem processes : Apex predator extinctions, land use and climate change

   Författare :Marianne Pasanen Mortensen; Bodil Elmhagen; Francisco Palomares; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Mesopredators; apex predators; top-down; bottom-up; interspecific killing; red fox; Eurasian lynx; grey wolf; wolverine; productivity; winter severity; cropland; zoologisk ekologi; Animal Ecology;

   Sammanfattning : Humans affect ecosystems by changing species compositions, landscape and climate. This thesis aims to increase our understanding of anthropogenic effects on mesopredator abundance due to changes in apex predator status, landscape and climate. LÄS MER