Sökning: "Brownification"

Visar resultat 1 - 5 av 14 uppsatser innehållade ordet Brownification.

  1. 1. Hydrological catchment analysis from characterisation of organic matter in stream water

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Hannes Berg Wiklund; [2020-02-05]
    Nyckelord :Organic matter; Time-of-flight mass spectrometry; aquatic chemistry; catchment hydrology;

    Sammanfattning : Organic matter (OM) in aquatic systems is a complex field which have rapidly developed duringthe last decade due to the introduction of high resolution mass spectrometers. The compositionof OM in the aquatic environment is directly dependent on factors such as oxygen supply, pHand the flow rate in the local system. LÄS MER

  2. 2. Assessment of the Contribution of Groundwater Flow and Surface Flow from Bolmsö Island to Lake Bolmen, Sweden

    Uppsats för yrkesexamina på avancerad nivå, Lunds universitet/Teknisk geologi; Lunds universitet/Väg- och vattenbyggnad (CI)

    Författare :Angelique Uwera; [2020]
    Nyckelord :Groundwater; Surface water; GMS-MODFLOW; Bolmsö Island; Lake Bolmen; Brownification.; Technology and Engineering;

    Sammanfattning : The increase of brownification in surface waters has been a problem for rivers and lakes from the northern hemisphere. The main factors of this water brownification are the increase of dissolved organic matter and iron in water bodies. LÄS MER

  3. 3. Impact of different catchments on the Brownification of Lake Bolmen

    Magister-uppsats, Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Författare :Kaela Chileshe; [2020]
    Nyckelord :Brownification; dissolved organic carbon DOC ; Iron Fe ; water colour; landscapes; climate change;

    Sammanfattning : Increased DOC and Fe concentrations from terrestrial landscapes has led to the browning of boreal surface waters. The negative societal and ecological impacts of brownification are increased cost of water purification, increased presences of algae and cyanobacteria, loss of ecosystem services and reduced recreational value. LÄS MER

  4. 4. Långtidstrender i Rickleån : Samband mellan koncentrationer av organiskt material och vattenflöde 1970–2019

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

    Författare :Tobias Pettersson; [2020]
    Nyckelord :Organic matter; water flow; Rickleån; brownification; long-term trends;

    Sammanfattning : Dissolved organic matter (DOM) in surface waters affect many important ecological functions. For instance, transporting metals, nutrients, carbon, affecting pH and water colour. In large parts of the Northen hemisphere, surface waters have become browner as a consequense of increasing DOM concentrations and, to some extent, iron. LÄS MER

  5. 5. Lakes are browner in the south than in the north of Sweden despite similar levels of dissolved iron

    Magister-uppsats, Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Författare :Fredrik Lindgren; [2019]
    Nyckelord :Brownification; DOC; dissolved iron; humic lakes; sulphur deposition; absorbance; climate change;

    Sammanfattning : During recent decades many lakes have become browner in the northern hemisphere and more specific in Sweden. This process is called brownification. Brownification of lakes makes it more difficult to clean water to drinking water and may have negative ecological effects on biota. LÄS MER