Sökning: "forest catchment"

Visar resultat 1 - 5 av 87 uppsatser innehållade orden forest catchment.

  1. 1. Riparian plant biodiversity and community composition of ditches and straightened streams : identifying key environmental drivers in a boreal forest setting

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Rasmus Staaf; [2024]
    Nyckelord :artificial waterways; riparian zone; novel ecosystems; ; forestry; ditch network maintenance; species richness; hill-diversity; drainage ditches; coarse woody debris; ditch cleaning; ecology;

    Sammanfattning : Modified ecosystems are typically seen as degraded and having no ecological value. In many cases, the modification of the ecosystem was done more than 100 years ago and may have had time to recover and become a refugia for species that were once more common in the landscape. LÄS MER

  3. 2. Kvantifiering av stenmängd i massavedsleveranser

    Uppsats för yrkesexamina på avancerad nivå, SLU/Department of Forest Biomaterials and Technology (from 131204)

    Författare :Erik Näsmark; [2023]
    Nyckelord :sten; massaved; underlag; snödjup; massavedsleveranser;

    Sammanfattning : Stora volymer massaved levereras dagligen till olika industrier i landet. Virket som levereras från skogen hanteras flertalet gånger av gripar och det finns därmed en stor risk att föroreningar som stenar kan följa med till industrierna. LÄS MER

  4. 3. Changes in lake-water organic carbon over recent centuries in northern Sweden, Västerbotten : Past and present mechanisms, and the potential implications on mercury

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Magnusson Petter; [2023]
    Nyckelord :Lake-water TOC; Summer forest farming; traditional agriculture; land-use; geochemistry; mercury;

    Sammanfattning : Due to the current increase in lake water total organic carbon (LW-TOC), many studies have investigated the long-term dynamics using lake sediments. However, these have mainly been focused on Sweden’s south and south-central parts. LÄS MER

  5. 4. Effects of Forest Ditch Cleaning on Surface Water Quality

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

    Författare :Emeli Arvidsson; [2023]
    Nyckelord :Ditch cleaning; forest clear-cut; water quality; water chemistry;

    Sammanfattning : Ditch cleaning (DC) is recommended by authorities to Swedish landowners to maintain forest productivity after forest harvest by lowering groundwater tables of catchment soils. Knowledge regarding the impact of this practice on surface water quality is limited, and results from previous research vary. LÄS MER

  7. 5. Mercury in a Swedish landscape over 30 years : a thesis on mercury concentrations in different water-cathments in Krycklan and Degerö stormyr

    Kandidat-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Ted Pettersson; Isak Haglund; [2023]
    Nyckelord :Atmospheric deposition; concentrations; dissolved organic carbon; mercury; methylmercury; peatlands; water-catchments;

    Sammanfattning : The purpose of this thesis is to examine trends in concentrations of total mercury (TotHg) and methylmer¬cury (MeHg) in water streams around Vindeln, Sweden, located northwest of Umeå. The relation¬ship between dissolved organic carbon (DOC) and TotHg were also examined in this thesis. LÄS MER