Essays about: "lake charr"

Showing result 1 - 5 of 7 essays containing the words lake charr.

  1. 1. 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

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Emmy Nyberg; [2022]
    Keywords : Aquaculture; wild fish; fat content; protein content; stable isotopes;

    Abstract : 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. READ MORE

  3. 2. Responses to declining zoobenthos abundance : Changes over time in diet and growth of Arctic charr (Salvelinus alpinus)

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

    Author : Douglas Skarp; [2020]
    Keywords : charr; zoobenthos; growth; diet;

    Abstract : A decline in the density of zoobenthos has taken place in Lake Abiskojaure in the northern Swedish mountains between 1988 and 2019 but no response can be seen in the abundance (CPUE) of Arctic charr (Salvelinus alpinus) that feed mainly on benthic invertebrates. To evaluate if possible shifts in resource use of charr explain this lack of change in population abundance, stomach contents (i. READ MORE

  4. 3. Responses to declining zoobenthos abundance : Changes over time in diet and growth of Arctic charr (Salvelinus alpinus)

    University essay from

    Author : Douglas Skarp; [2020]
    Keywords : charr; zoobenthos; growth; diet;

    Abstract : A decline in the density of zoobenthos has taken place in Lake Abiskojaure in the northern Swedish mountains between 1988 and 2019 but no response can be seen in the abundance (CPUE) of Arctic charr (Salvelinus alpinus) that feed mainly on benthic invertebrates. To evaluate if possible shifts in resource use of charr explain this lack of change in population abundance, stomach contents (i. READ MORE

  5. 4. Fiskares uppfattning om förändring i status hos ett rödingbestånd i en Jämtländsk sjö : möjliga orsaker till en förändring

    University essay from SLU/Dept. Of Aquatic Resources

    Author : Johanna Malmgren; [2016]
    Keywords : röding; bestånd; minskning; temperaturökning; konkurrens; introduktion; vattenreglering; fiske; jordbruk; skogsbruk;

    Abstract : Global klimatförändring, habitatförstörelse, introduktion av främmande arter och överexploatering är några av de främsta hoten mot såväl enskilda arter som ekosystems struktur och funktion. Rödingen (Salvelinus alpinus) är en av de arter som hittills har påverkats på flera olika sätt av mänskliga aktiviteter. READ MORE

  6. 5. Evaluating lake charr (Salvelinus namaycush) temperature use in a mountain lake using acoustic telemetry

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Johan Leander; [2015]
    Keywords : lake charr; acoustic telemetry; habitat selection; temperature;

    Abstract : Bathythermal distribution of lake charr (Salvelinus namaycush) was surveyed in a boreal lake located in northern Sweden. Based on acoustic telemetry, a high resolution dataset was acquired with more than 630 000 observations from eighteen tagged lake charr. READ MORE