Sökning: "Stream Restorations"

Hittade 4 uppsatser innehållade orden Stream Restorations.

  1. 1. Stream Restorationand Mitigation of Nitrogen in the Hyporheic zone : Interpretation of tracer tests from Tullstorps brook

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Sunna Mjöll Sverrisdóttir; [2019]
    Nyckelord :Hyporheic Zone; Stream Restorations; Nitrate Mitigation; Tracer test; Solute Transport; Eutrophication; Nitrogen;

    Sammanfattning : Streams and rivers have been modified in the past centuries for agricultural purposes. The Baltic Sea suffers from problems regarding eutrophication. Regulations of point-sources have decreased nutrient levels, but for a scattered source of nutrient pollution, streams are important. LÄS MER

  3. 2. Vegetation i förändring - en jämförelse mellan två vattendrag

    Kandidat-uppsats, Lunds universitet/Examensarbeten i biologi

    Författare :Hanna Thosteman; [2017]
    Nyckelord :Biology and Life Sciences;

    Sammanfattning : Restoring and meandering straightened streams is an important part of the Swedish environmental objective “Live lakes and water courses”. Restoration improves the living conditions for plants and animals that reside in or near the stream, and increases the uptake of excess nutrients leaking from nearby farmland. LÄS MER

  4. 3. Flottledsåterställning i norra Sverige : effekter på habitatkvalitet och populationstätheter av juvenil öringar (Salmo trutta L.)

    L3-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Johan Styffe; [2008]
    Nyckelord :flottledsrestaurering; salmo trutta; juvenila öringar; populationstäthet; habitatpreferenser;

    Sammanfattning : In an effort to evaluate the effects of restorations of float ways on population density of stream dwelling fish in relation to the changes in habitat, I studied the physical habitat restored and channalized sites and their population density of brown trout (Salmo trutta L.) in three streams in the municipality of Sorsele. LÄS MER

  5. 4. Vattendragsrestaurering i teorin och fiskinventering i praktiken : en litteratur respektive metodstudie

    L3-uppsats, SLU/Dept. Of Aquatic Resources

    Författare :Johan Baudou; [2006]
    Nyckelord :fisktätheter; populationsstruktur; artdiversitet; elfiske; beståndsskattning; spöfiske; vattendragsrestaurering; fiskinventering;

    Sammanfattning : Running water-pathways have played an important roll in Sweden and frequently been manipulated. One profound change was made during the period of logging when streams were cleared from obstacles as big boulders, sharp bends and side-streams. LÄS MER