Sökning: "drainage ditches"

Visar resultat 1 - 5 av 35 uppsatser innehållade orden drainage ditches.

  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. The role of bed sediments for fractionation of phosphorus in remediated ditches in Sweden

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

    Författare :Emma Ryding; [2022]
    Nyckelord :Phosphorus fractionation; agricultural stream; sediment; two-stage ditch; eutrophication;

    Sammanfattning : Sweden’s environmental quality objectives “A varied agricultural landscape” and “Zero eutrophication”, aims to ensure food production while reducing negative impact from fertilizers on the environment. The input ceilings of nutrient concentrations in the Baltic Sea are still critical. LÄS MER

  4. 3. Hållbar dagvattenhantering i mittrefug : en studie av Västra Ringvägen i Västerås

    Kandidat-uppsats, SLU/Dept. of Urban and Rural Development

    Författare :Ida Elgelind; Sandra Villner; [2022]
    Nyckelord :hållbar dagvattenhantering; mittrefug; gata; infiltrationsanläggning; gräsbeklätt dike; makadamdike;

    Sammanfattning : Dagvattenhanteringen får allt större fokus i stadsplaneringen till följd av klimatförändringar och urbanisering. Städers kraftiga expansion med fler hårdgjorda ytor medför att den naturliga vattencykeln påverkas och större dagvattenmängder rinner av på ytan istället för att infiltrera. LÄS MER

  5. 4. The role of bed sediments for sorption of phosphorus in remediated ditches in Sweden

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

    Författare :Linus Holgersson; [2022]
    Nyckelord :Phosphorus; Two-stage ditch; Equilibrium phosphate concentration; Phosphorus retention; Eutrophication; Soluble reactive phosphorus;

    Sammanfattning : Human activities have increased nutrient losses to agricultural ditches and streams, including phosphorus. Phosphorus leakage leads to a worsening of water quality in downstream ecosystems, including lakes and seas. In addition, higher phosphorus concentrations lead to eutrophication, which negatively affects aquatic systems. LÄS MER

  7. 5. Forest Ditches As Habitat For Aquatic Macroinvertebrate In Boreal Landscapes

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

    Författare :Lara Sánchez Calderón; [2022]
    Nyckelord :aquatic macroinvertebrates; drainage ditches; Sweden; mineral soil; peat soil; forestry;

    Sammanfattning : Large areas of northern Sweden have been ditched to promote forest growth by draining wet soils and peatlands. These ditches have greatly added to length of Sweden’s stream and river network, but the ecological properties of these man-made aquatic environments is poorly understood. LÄS MER