Sökning: "Dissolved Organic Carbon DOC"

Visar resultat 1 - 5 av 64 avhandlingar innehållade orden Dissolved Organic Carbon DOC.

  1. 1. Dissolved organic matter in lakes : Chemical diversity and continuum of reactivity

    Författare :Alina Mostovaya; Lars Tranvik; Colin Stedmon; Uppsala universitet; []
    Nyckelord :dissolved organic matter; DOM; dissolved organic carbon; DOC; PARAFAC; reactivity continuum model; ultrahigh resolution mass spectrometry; FT-ICR-MS; organic matter characterization; decomposition kinetics; baseline metabolism; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Sammanfattning : Dissolved organic matter (DOM) is the largest pool of organic carbon in aquatic systems and an important component of the global carbon cycle. Large amounts of DOM are decomposed within lakes, resulting in fluxes of CO2 and CH4 to the atmosphere. LÄS MER

  2. 2. Waterborne Carbon in Northern Streams : Controls on dissolved carbon transport across sub-arctic Scandinavia

    Författare :Elin Jantze; Steve W. Lyon; Georgia Destouni; Helen Dahlke; Pirkko Kortelainen; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; dissolved carbon; DOC; DIC; TOC; sub-arctic; hydrology; Abisko; naturgeografi; Physical Geography;

    Sammanfattning : Waterborne carbon (C) forms an active and significant part of the global C cycle, which is important in theArctic where greater temperature increases and variability are anticipated relative to the rest of the globe withpotential implications for the C cycle. Understanding and quantification of the current processes governing themovement of C by connecting terrestrial and marine systems is necessary to better estimate future changes ofwaterborne C. LÄS MER

  3. 3. Organic carbon dynamics in the Baltic Sea : A modelling perspective

    Författare :Filippa Fransner; Jonas Nycander; Christoph Humborg; Andreas Oschlies; Stockholms universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; carbon cycle; organic carbon; primary production; remineralisation; terrestrial DOC; extracellular DOC; flexible stoichiometry; Redfield ratio; air-sea CO2 exchange; pCO2; coupled 3D physical-biogeochemical modelling; Gulf of Bothnia; Baltic Sea; Atmospheric Sciences and Oceanography; atmosfärvetenskap och oceanografi;

    Sammanfattning : Coastal seas constitute a link between land and the open ocean, and therefore play an important role in the global carbon cycle. Large amounts of carbon, of both terrestrial and marine origin, transit and are transformed in these waters, which belong to the more productive areas of the oceans. LÄS MER

  4. 4. Reactive dissolved organic carbon dynamics in a changing environment : Experimental evidence from soil and water

    Författare :Balathandayuthabani Panneer Selvam; Institutionen för naturgeografi och ekosystemvetenskap; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Dissolved organic carbon; DOC; Photodegradation; Biodegradation; DOC reactivity;

    Sammanfattning : Dissolved organic carbon (DOC) is the major form of organic carbon in aquatic ecosystems. Biological and photochemical degradation of DOC are major causes of greenhouse gas emissions from aquatic ecosystems. LÄS MER

  5. 5. Carbon Dioxide in Inland Waters : Drivers and Mechanisms Across Spatial and Temporal Scales

    Författare :Anna Cecilia Nydahl; Gesa A. Weyhenmeyer; Marguerite Xenopoulos; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; carbon dioxide; dissolved organic carbon; inland water; lake; stream; groundwater; mesocosm; carbonate system; carbon; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Sammanfattning : Inland waters are an essential component of the global carbon cycle as they are very active sites for carbon transformation processes. Much of this carbon is transformed into the greenhouse gas carbon dioxide (CO2) and emitted into the atmosphere. LÄS MER