Essays about: "Circumpolar North"

Found 5 essays containing the words Circumpolar North.

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

    University essay from Göteborgs universitet/Institutionen för geovetenskaper

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

    Abstract : 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. READ MORE

  3. 2. Hårfällor för järv : en studie i alternativa inventeringsmetoder

    University essay from SLU/Dept. of Ecology

    Author : Tove Hydén; [2023]
    Keywords : järv; inventering; stora rovdjur; DNA; DNA-inventering; hårfälla;

    Abstract : Järv är ett mytomspunnet djur som vi vet relativt lite om i jämförelse med andra stora rovdjur. Järven tillhör mårddjuren och har en cirkumpolär utbredning i Europa, Asien och Nordamerika. i Skandinavien förekommer den främst kring fjällkedjan men utbredningsområdet ökar. READ MORE

  4. 3. The Susceptibility of the Circumpolar North to Zombie Wildfire : An Exploratory Case Study of Sweden

    University essay from Södertörns högskola/Miljövetenskap

    Author : Stephanie Louise Hurst; [2021]
    Keywords : Wildfire; zombie fire; overwintering; holdover; carbon cycle; climate change; Circumpolar North; Sweden; Skogsbrand; zombiebrand; övervintrande; kolcykel; klimatförändring; Cirkumpolär Norr; Sverige;

    Abstract : Climate change is warming the North and exposing its immense carbon stores not only to wildfire disturbances, but overwintering, or zombie, fire. These remnants of summer fires can spend months smouldering under the surface, hidden under the protection of layers of snow, burning through immense amounts of carbon, which is then released into the atmosphere, further exacerbating climate change. READ MORE

  5. 4. Conservation Genomics of the Long-tailed Duck

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Brynhildur Magnúsdóttir; [2021]
    Keywords : Long-tailed duck; migration; conservation; population structure; genome;

    Abstract : With increasingly warming climate, many bird species have been forced to respond to environmental changes, and the long-tailed duck (Clangula hyemalis) is no exception. The populations of the long-tailed duck have been in decline the past few decades and the species is classified as globally vulnerable and near threatened in both Iceland and Sweden. READ MORE

  6. 5. Relating interannual variability of atmospheric CH4 growth rate to large-scale CH4 emissions from northern wetlands

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Sophie Rychlik; [2009]
    Keywords : temperature sensitivity; interannual variability; emission sources; CH4; northern wetlands; physical geography; July; atmospheric growth rate; Earth and Environmental Sciences;

    Abstract : Metan (CH4) är en av de viktigaste växthusgaserna i atmosfären och dess kraftiga ökning har bidragit till den uppvärmning som vi har upplevt fram till idag. Sedan mitten av 1980-talet påvisar mätningar att metantillväxten i atmosfären har börjat fluktuera från år till år. Orsakerna till detta är omstridda och ännu inte klargjorda. READ MORE