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Visar resultat 11 - 15 av 22 uppsatser som matchar ovanstående sökkriterier.

  1. 11. Causes and impact of surface water pollution in Addis Ababa, Ethiopia

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Malin Eriksson; Jonathan Sigvant; [2019]
    Nyckelord :Akaki river; E. coli; health risk; interview study; irrigation; physico-chemical parameters; water samples; Akaki; E. coli; fysikalisk-kemiska parametrar; hälsorisker; intervjustudie; vattenprover;

    Sammanfattning : Surface water is globally becoming more and more a scarce resource, and in Addis Ababa the capital of Ethiopia, river water quality has been degraded due to anthropological forcing for many years. Therefore, the study objective was to investigate causes and impact of surface water pollution in Kebena and Great Akaki rivers. LÄS MER

  3. 12. 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

  4. 13. People’s perception of seagrass ecosystems - a Step Zero analysis in establishing marine protection of seagrass around Gotland, Sweden

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Sofie Elggren; [2019]
    Nyckelord :Sustainable development; seagrass; ecosystem services; participation; natural resource management; Step Zero analysis;

    Sammanfattning : The marine environment is under stress. This study will address seagrass around the island of Gotland, Sweden. Seagrass is a marine flowering plant which grows on the seabed and provide a multitude of important ecosystem services such as nutrient cycling, carbon sequestration, erosion mitigation and serve as habitats for primary fisheries. LÄS MER

  5. 14. Using Blue Mussels as a Tool for Mitigating Eutrophication in the Baltic Sea

    Master-uppsats, Linköpings universitet/Industriell miljöteknik

    Författare :Johanna Ståhle; Linnea Henriksson; [2018]
    Nyckelord :Life cycle analysis LCA ; recycling of nutrients; blue mussels; mussel farm; mussel meal; biogas; compost;

    Sammanfattning : Eutrophication is a consequence of excess nutrients in the water which leads to increased algaegrowth, reduced water transparency and hypoxic bottoms. This is the biggest environmental problemfor the Baltic Sea which recently has resulted in stricter legislations and other initiatives to help theBaltic Sea to recover. LÄS MER

  7. 15. Nutrient concentrations before and after the Focus on Phosphorus project in E23 catchment

    Kandidat-uppsats, SLU/Dept. of Soil and Environment

    Författare :Åsa Larsson; [2018]
    Nyckelord :phosphorus; Greppa fosforn; two-stage ditch; structure liming; sedimentation pond;

    Sammanfattning : Between 2007-2014, as part of the Greppa Näringen, there was a subproject on phosphorus losses called Focus on Phosphorus (FoP; Greppa Fosforn). Previous measures on eutrophication mainly focused on nitrogen leakage, whilst the purpose of FoP was to test already known mitigation methods against phosphorus losses in the field. LÄS MER