Sökning: "reindeer herbivory"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden reindeer herbivory.

  1. 1. Hyperspectral and multispectral satellite data analysis of nitrogen in grazed and ungrazed tundra in Långfjället, Sweden

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Emma Dahlstedt; [2023-08-18]
    Nyckelord :Hyperspectral imaging; Imaging spectroscopy; Nitrogen; Reindeer; Herbivory; Tundra; Grazing;

    Sammanfattning : Reindeer are a keystone species in the circumpolar north, where they hold great cultural and ecological importance. Continued climate change threatens the long-term sustainability of reindeer husbandry. Reindeer can affect the tundra landscape, influencing the soil nutrient cycling, including the soil nitrogen availability. LÄS MER

  3. 2. Forest, Tree, and Shrub limit responses to a century of climate change in Northern Norway

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

    Författare :Ella Björsbo; [2023]
    Nyckelord :Climate warming; growing season length; forest limit; tree limit; shrub limit;

    Sammanfattning : Climate changes have been observed in the Northern Hemisphere during the last century, causing a longer growing season and upslope expansion of forest, tree, and shrub limits. Here, a long-term historical perspective was used as a tool for investigating how climate change has impacted woody plants at the forest, tree, and shrub limits across the study region. LÄS MER

  4. 3. Reindeer grazing, soil wetness and aspect interact to drive tundra plant community structure in northern Sweden

    Master-uppsats, Stockholms universitet/Institutionen för naturgeografi

    Författare :Emma Gemal; [2023]
    Nyckelord :tundra plants; vegetation; abiotic vs. biotic effects; community composition; diversity; reindeer herbivory; accelerometry; grazing;

    Sammanfattning : The relative importance of abiotic versus biotic top-down factors on structuring tundra plant communities is debated. With climate change already strongly affecting the tundra ecosystem, understanding which factors will prevail is vital. LÄS MER

  5. 4. Sekundära metaboliter hos Betula nana ssp. nana : effekter av betestryck och näringstillgång

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

    Författare :Herman Källå; [2020]
    Nyckelord :;

    Sammanfattning : The ongoing shrubification of the Arctic tundra may in the future have serious consequences for the ecosystem. More trees and shrubs will lead to changes in species composition and may alter diversity, carbon and nutrient balance, and result in a lower albedo. LÄS MER

  7. 5. Sekundära metaboliter hos Betula nana ssp. nana : effekter av betestryck och näringstillgång

    Kandidat-uppsats,

    Författare :Herman Källå; [2020]
    Nyckelord :;

    Sammanfattning : The ongoing shrubification of the Arctic tundra may in the future have serious consequences for the ecosystem. More trees and shrubs will lead to changes in species composition and may alter diversity, carbon and nutrient balance, and result in a lower albedo. LÄS MER