Essays about: "agricultural catchments"

Showing result 6 - 10 of 24 essays containing the words agricultural catchments.

  1. 6. How robust is water quality determination with optical measurements for highly polluted agricultural waters?

    University essay from SLU/Dept. of Soil and Environment

    Author : Honorine Uwera; [2020]
    Keywords : turbidity; suspended sediments; dissolved organic matter; optical measurements;

    Abstract : Optical technology is used to measure and monitor water quality, to date mainly in drinking water treatment, where water is typically much cleaner than in heavily polluted agricultural streams. To characterize suspended sediments (SS) and dissolved organic matter (DOM) in surface water some optical measurements have been used (absorbance and fluorescence spectroscopy). READ MORE

  3. 7. Size optimization of constructed wetlands for phosphorus retention in agricultural areas

    University essay from SLU/Dept. of Soil and Environment

    Author : Anna Ferguson; [2019]
    Keywords : hydraulic load; digital elevation models; catchment;

    Abstract : Eutrophication is one of the main threats to the Baltic Sea and Sweden is not expected to reach its environmental target of No Eutrophication by 2020. Phosphorus (P) lossfrom terrestrial systems is one of the principal causes of eutrophication in water recipients and the need to decrease P loss from agricultural land is pressing. READ MORE

  4. 8. Lake biology as a function of catchment characteristics and water quality parameters – focus on phytoplankton

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Jenny Näslund; [2019]
    Keywords : phytoplankton; total phosphorus; catchment; soil properties; land use; agriculture; water framework directive; ecological status;

    Abstract : According to the EU Water Framework Directive, phytoplankton should be included for assessment of the ecological status of lakes. Phytoplankton respond rapidly to environmental changes and are a particularly good indicator of nutrient loads. READ MORE

  5. 9. Dissolved organic matter (DOM) quality in agricultural streams and its impact on carbon dioxide concentrations in stream water

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Karin Broqvist; [2018]
    Keywords : DOM quality; dissolved organic matter; DOC; PARAFAC; fluorescence; streams; agriculture; fluorescence index; freshness index; humification index; carbon dioxide; DOM kvalitet; löst organiskt material; DOC; PARAFAC; fluorescens; bäckar; jordbruk; fluorescence index; freshness index; humification index; koldioxid;

    Abstract : Inland waters have lately been recognized to be an important component in the carbon cycle, having a significant role in carbon sequestration and carbon dioxide (CO2) emissions. Attention has also been drawn to the impact of the quality (i.e. composition and source) of dissolved organic matter (DOM) on CO2 production. READ MORE

  6. 10. Carbon dioxide in agricultural streams : Magnitude and patterns of an understudied atmospheric carbon source

    University essay from Uppsala universitet/Luft-, vatten- och landskapslära

    Author : My Osterman; [2018]
    Keywords : Carbon dioxide; streams; agriculture; catchment; floating chamber; Kendall s Tau; CORINE Land Cover;

    Abstract : The role of streams in the global carbon budget was for a long time neglected, since they were considered passive transporters of carbon from land to sea. However, studies have shown that streams are often supersaturated in carbon dioxide (CO2), making them sources of carbon to the atmosphere. READ MORE