Sökning: "umeå ekologi"

Visar resultat 1 - 5 av 388 uppsatser innehållade orden umeå ekologi.

  1. 1. The ecological niche of the Black vanilla orchid (Gymnadenia nigra) in Vålådalen

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Felix Gunnarsson; [2022]
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  2. 2. Assortativ parning hos sik (Coregonus lavaretus)

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Joni Riihimaa; [2022]
    Nyckelord :assortative mating; European whitefish; reproductive isolation;

    Sammanfattning : European whitefish (Coregonus lavaretus) forms reproductively isolated sub-populations with different body sizes in the lakes where northern pike (Esox lucius) exists. It has been hypothesized that the initial reproductive isolation between ecotypes arises through size-assortative mate choice or because small and large individuals arrive to the spawning grounds at different times. LÄS MER

  3. 3. Hg concentration in humus soils in different Arctic and Subarctic tundra vegetation types : Including a method comparison for analyzing metals in humus soils

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Alice Sandvärn; [2022]
    Nyckelord :Hg concentration; vegetation types; Arctic tundra; elevation gradient; XRF;

    Sammanfattning : Heavy metals, such as mercury (Hg), have a long residence time in the atmosphere and can be transported long distances and deposited in the Arctic via wet and dry deposition. Still, there are few studies on the complex mercury cycle and how different plant groups absorb Hg. LÄS MER

  4. 4. The influence of covid-19 on social well-being and sustainability: a systematic literature review

    Magister-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Evangeline de Kort; [2022]
    Nyckelord :covid-19; social well-being; sustainable development goals; social contacts; safety in the home environment.;

    Sammanfattning : The emergence of covid-19 has been declared as an international public health emergency in January 2020 by the World Health Organization and has affected millions of people across the world ever since. Public health interventions focused on controlling person-to-person infections to mitigate the number of infections and possible severe or fatal health effects. LÄS MER

  5. 5. INDIVIDUAL TRAIT MATCHING OF BUMBLEBEES (BOMBUS) AND FLOWERS ALONG AN ENVIRONMENTAL GRADIENT

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Johan Per Michael Svedin; [2022]
    Nyckelord :Arctic climate change; Bombus; Flower morphology; Plant-pollinator trait-matching;

    Sammanfattning : Insect pollinators serve a critical role in maintaining plant biodiversity and are especially susceptible to changes within their environment. To study the possible effects of seasonal variation in temperature, as well as climatic temperature increase on the plant-pollinator community, the relationship between bumblebee and flowering plant traits along an elevational gradient, representing warming-induced changes in plant community, were examined. LÄS MER