Sökning: "The Arctic five"

Visar resultat 1 - 5 av 32 uppsatser innehållade orden The Arctic five.

  1. 1. Norra polcirkelns uppvärmning och ännu varmare maktkapplöpning

    Kandidat-uppsats, Lunds universitet/Statsvetenskapliga institutionen

    Författare :Ulf Liljedahl; [2024]
    Nyckelord :Klimatförändringar; Arktis; Geopolitik; Internationella relationer; Realism; Liberalism; The Arctic five; Law and Political Science;

    Sammanfattning : Today the climate in the arctic regions are changing at a rapid rate, faster than any speed previously recorded in human history but how is it impacting the geopolitical situation in these regions? New territory is being created by the ice melting and new natural resources are being found, how can this impact the current situation? This study looks at and discusses the current geopolitical situation in the Arctic using two theories from international relations, realism and liberalism and how the situation can develop using these theories. From a realist standpoint it is a balance of power held in check primarily by nuclear weapons. LÄS MER

  3. 2. Legacy effects of temperature alterations on microbial resistance and resilience to drying and rewetting

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Franklin Lee Harris; [2023]
    Nyckelord :microbial ecology; soil; carbon dynamics; high latitudes; climate change; moisture stress; isotopes; respiration; trait based ecology; soil microbes; Environmental Changes in High Latitudes EnCHIL ; Earth and Environmental Sciences; Biology and Life Sciences;

    Sammanfattning : With warming in soils due to climate change, a series of secondary factors arise, which have multifaceted effects on soil microbial communities. Of these, alterations to soil moisture are among the most crucial to understanding how microbial functions will change in the face of climate change. LÄS MER

  4. 3. FLOWERING TIME DEPENDENCE ON MICROCLIMATE ACROSS AN ELEVATIONAL GRADIENT IN ARCTIC PLANT COMMUNITIES

    Kandidat-uppsats, Göteborgs universitet / Instiutionen för biologi och miljövetenskap

    Författare :Maria Pavolotskaia; [2022-07-06]
    Nyckelord :The Arctic; flowering time; flowering phenology; elevation; elevational gradient; temperature; snowmelt; snow cover; microclimate.;

    Sammanfattning : The Arctic is the fastest-warming region on Earth. Arctic plant communities are highly sensitive to temperature change; temperature-dependent advancement of flowering dates has already been observed in the Arctic. Flowering time is critical for reproductive success. LÄS MER

  5. 4. Methane Sulphonic Acid in East Antarctic Coastal Firn and Ice Cores and Its Relationship with Chlorophyll-a and Sea Ice Extent in the Southern Ocean

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Emma Nilsson; [2022]
    Nyckelord :methane sulphonic acid; firn cores; sea ice proxy; marine primary productivity; Fimbul Ice Shelf; Dronning Maud Land; metansulfonsyra; firnkärnor; havsis-proxy; marin primärproduktion; Fimbulisen; Dronning Maud Land;

    Sammanfattning : The seasonal retreat of sea ice in the austral spring and summer around Antarctica has a significant effect on phytoplankton activity, mainly due to light availability, meltwater input of dissolved iron, and surface water stratification. Phytoplankton produce dimethylsulfoniopropionate, the precursor to the climate-cooling gas dimethyl sulphide, which is ventilated to the atmosphere and oxidised to methane sulphonic acid (MSA). LÄS MER

  7. 5. Common Guillemots Uria aalge Alter Trip Patterns During Breeding

    Kandidat-uppsats, SLU/Dept. of Animal Environment and Health

    Författare :Mica Bohacek; [2022]
    Nyckelord :Common Murre; Stora Karlsö; trip duration; trip frequency; central-place foragers; feeding rate; time-budget;

    Sammanfattning : Seabirds are facing immense pressures, primarily induced by competition with commercial fisheries; this is of considerable concern due to the critical role that they play in marine food webs and their invaluable function as bioindicators. In this thesis, I studied the temporal change in trip duration for the Common Guillemot Uria aalge, a circum-arctic seabird species. LÄS MER