Sökning: "Seasonal variation"

Visar resultat 26 - 30 av 221 avhandlingar innehållade orden Seasonal variation.

  1. 26. Urban design of winter cities : Winter season connectivity for soft mobility

    Författare :David Chapman; Kristina Nilsson; Agatino Rizzo; Agneta Larsson; Dag Kittang; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Urban form; urban design; seasonal climate variation; winter cities; climate change; Architecture; Arkitektur;

    Sammanfattning : All across the world the form of the built environment is playing a crucial role as enabler or inhibitor for urban outdoor activity such as soft mobility. Urban form can make it more attractive for people to be mobile outdoors and playing a role in the public life, or it can put people off venturing outside. LÄS MER

  3. 27. Seasonal variation in structure and function of the vascular cambium and characteristics of the wood in Salix

    Författare :Lisbeth Sennerby-Forsse; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER

  4. 28. Soil microbial responses to mild winters and seasonal change

    Författare :Johanna Birgander; Biodiversitet; []
    Nyckelord :Arbuscular mycorrhizal fungi AMF ; RESPIRATION; Stable isotope; Fungal growth; PLFA; NLFA; Microbial community composition; bacterial growth; Aboveground-belowground interactions; Temperature adaptation; Climate change;

    Sammanfattning : The aim with this thesis work was to study microorganisms response to milder winters, different seasons, and altered temperature. Winter warming treatments were established in a semi-natural temperate grassland, simulating mild winters for two years. LÄS MER

  5. 29. Adjusting to the extreme : Thermal adaptation in a freshwater gastropod

    Författare :Magnus Johansson; Laurila Anssi; Robby Stoks; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Radix balthica; Lake Mývatn; geothermal springs; thermal adaptation; isolation by environment; population structure; gene flow; cogradient variation; AFLP; thermal preference; CTmax; Biologi med inriktning mot populationsbiologi; Biology with specialization in Population Biology;

    Sammanfattning : Temperature is a ubiquitous force influencing biological processes ranging from cellular responses to life span. The thermal environment for many organisms is predicted to change with globally increasing temperatures and studies conducted in natural systems incorporating various evolutionary forces, such as gene flow, is needed. LÄS MER

  7. 30. Distribution and abundance of genetic variation in the arctic fox

    Författare :Love Dalén; Anders Angerbjörn; Robert K. Wayne; Stockholms universitet; []
    Nyckelord :population genetics; DNA; ecology; population history; gene flow; Alopex lagopus;

    Sammanfattning : This thesis investigates how changes in population size and spatial movements of individuals have shaped the distribution and abundance of neutral genetic variation in the arctic fox. This is done through mitochondrial and microsatellite DNA analyses on samples covering most of the species’ distribution, but with special emphasis on Scandinavia. LÄS MER