Sökning: "subarctic lakes"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden subarctic lakes.

  1. 1. Diet of Arctic char and brown trout in Northern Sweden : potential effects of burbot and lake area

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Sebastian Dagman; [2023]
    Nyckelord :arctic char; brown trout; diet; stomach content; salmonids; burbot;

    Sammanfattning : To manage and conserve different fish species, it is important to know what factors affect the presence and performance of the species. Relatively few studies have focused on burbot and how they interact with other species. LÄS MER

  3. 2. Photo-chemical reactivity of dissolved organic carbon in subarctic lakes from northern Sweden

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

    Författare :Hani Younes; [2020]
    Nyckelord :Photo-reactivity; DOM; subarctic lakes; EEM-PARAFAC. Brownification; Earth and Environmental Sciences;

    Sammanfattning : Dissolved organic matter (DOM) is the major absorber of sunlight in most natural waters and a critical component of the carbon cycle in aquatic systems. The photochemical decomposition of DOM can have a significant impact on the landscape-atmosphere carbon exchange. LÄS MER

  4. 3. Effekter av klimatförändringar på växtplankton i subarktiska och alpina sjöar

    Kandidat-uppsats, SLU/Dept. of Aquatic Sciences and Assessment

    Författare :Matilda Lundström; [2019]
    Nyckelord :Fosfor; Växtplanktonbiomassa; Diversitet; Oligotrofiering; Temperatur;

    Sammanfattning : The aim of this report was to determine how the climate change affects the ecosystems in alpine and subarctic lakes in Sweden. This was done by analyzing data from environmental monitoring of 14 subarctic and alpine lakes that was part of the national time-series lake monitoring program. LÄS MER

  5. 4. Estimated Input of Mercury to Kusawa Lake, Northern Canada, from Snow and Glacial Melt Water

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Ingrid Beckholmen; [2016]
    Nyckelord :Mercury; HBV-model; Kusawa Lake; Canada; runoff; glaciers; Kvicksilver; HBV-model; Kusawa Lake; Kanada; avrinning; glaciärer;

    Sammanfattning : Unusually high levels of mercury (Hg) have been detected in several northern Canadian lakes, remote from human industrial activities. At Kusawa Lake, a subalpine glacier-fed mountain lake situated in the Yukon Territory (western Canada), measurements of Hg in caught fish are below, but worryingly close to, the Health Canada guideline for safe fish consumption of 0. LÄS MER

  7. 5. The suitability of using Landsat TM-5 Images for estimating chromophoric dissolved organic matter in subarctic Lakes

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

    Författare :Julia Jakobsson; [2014]
    Nyckelord :CDOM; dissolved organic carbon; colored dissolved organic matter; Chromophoric; landsat thematic mapper 5; subarctic lakes; Stordalen; empirical algorithm.; Abisko; DOC; remote sensing; Physical Geography and Ecosystem Science; Earth and Environmental Sciences;

    Sammanfattning : Recent trends of permafrost thawing in the subarctic are expected to cause increased release of dissolved organic carbon (DOC) to inland waters, which might have cascading effects on downstream aquatic ecosystems and release of CO2 to the atmosphere. This study therefore aimed at evaluating the applicability of an empirical band ratio algorithm for estimating chromophoric dissolved organic matter (CDOM; a proxy for DOC) from the easily accessible satellite images Landsat TM-5, to counter the inaccessibility of the region in general. LÄS MER