Sökning: "Arctic lake"

Visar resultat 1 - 5 av 27 uppsatser innehållade orden Arctic lake.

  1. 1. Evaluating the effects of climate change on Arctic char : including impacts of brown trout competition

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

    Författare :Ola Carlström; [2023]
    Nyckelord :arctic char; brown trout; climate change; diet; habitat use; temperature;

    Sammanfattning : Climate change is predicted to increase the average global temperature with 1.5 °C between 2030 and 2052. The areas that are most vulnerable for climate change are the arctic regions. Arctic char (Salvelinus alpinus) is a cold-water salmonid species with the most northern distribution of all freshwater fish species. LÄS MER

  3. 2. 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

  4. 3. Aquaculture and its effect on the wild fish resource in a Swedish lake : An evaluation of changes in fat content, protein content and trophic niche

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

    Författare :Emmy Nyberg; [2022]
    Nyckelord :Aquaculture; wild fish; fat content; protein content; stable isotopes;

    Sammanfattning : Fish is nutritious and important as a food source for many people. It contains high levels of protein, important omega-3 fatty acids as well as micronutrients. For a sustainable fish consumption, aquaculture is needed but it can affect nearby ecosystems in many ways. LÄS MER

  5. 4. P-cycling in sub-Arctic lakes – the importance of sediment release and retention

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

    Författare :Hanna Ravry; [2022]
    Nyckelord :phosphorus; sediment; oligotrophication;

    Sammanfattning : Oligotrophication is generally caused by a decreased nutrient availability, usually due to phosphorous limitation. This is a phenomenon impacting the entire food web and at worst causing cascading alterations within an ecosystem. Lakes of the Northern Hemisphere have lately been documented to be subjected to oligotrophication (e.g. LÄS MER

  7. 5. Fönsteruttag som verktyg i bevarandet av vätternrödingen (Salvelinus alpinus)

    Kandidat-uppsats, Högskolan i Skövde/Institutionen för biovetenskap

    Författare :Moa Hagström; [2022]
    Nyckelord :;

    Sammanfattning : Vättern är Europas femte största sjö och har en unik kallvattenekologi, här finns Europas viktigaste bestånd av röding (Salvelinus alpinus). Historiskt fiskades rödingen i hårt i Vättern med fångster på upp till 70 ton per år i mitten av 1900-talet, fångsten minskade sedan successivt tills den 2009 endast uppnådde 3 ton. LÄS MER