Essays about: "The Arctic"

Showing result 1 - 5 of 322 essays containing the words The Arctic.

  1. 1. Behov och inställning till ett gränsöverskridande skyddsområde för fjällräv i Sverige, Norge och Finland

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Erik Näsmark; Erik Strand; [2022]
    Keywords : fjällräv; Vulpes lagopus; skyddsområden; gränsöverskridande; Treriksröset;

    Abstract : The arctic fox has been threatened by extinction in Fennoscandia since the beginning of 1900s. Even though it has been protected in Sweden, Norway and Finland for almost a century, it has not recovered and is still classified as threatened. READ MORE

  2. 2. Predicting the future summer range of a declining Arctic waterfowl: the Greenland White-fronted Goose (Anser albifrons flavirostris)

    University essay from

    Author : Emil Lundahl; [2022]
    Keywords : ;

    Abstract : This study investigates what the future might hold for an endemic goose species, found exclusively in the low Arctic region of West Greenland. Facing a decline since four decades, the Greenland White-fronted Goose constitutes one of few goose populations showing a declining trend. READ MORE

  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

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

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

    Abstract : 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. READ MORE

  4. 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

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Emma Nilsson; [2022]
    Keywords : 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;

    Abstract : 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). READ MORE

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

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

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

    Abstract : 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. READ MORE