Search for dissertations about: "dissolved carbon"

Showing result 1 - 5 of 198 swedish dissertations containing the words dissolved carbon.

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

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Anna Cecilia Nydahl; Gesa A. Weyhenmeyer; Marguerite Xenopoulos; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; carbon dioxide; dissolved organic carbon; inland water; lake; stream; groundwater; mesocosm; carbonate system; carbon; Biology with specialization in Limnology; Biologi med inriktning mot limnologi;

    Abstract : 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. READ MORE

  2. 2. Flocculation of Allochthonous Dissolved Organic Matter – a Significant Pathway of Sedimentation and Carbon Burial in Lakes

    University dissertation from Uppsala : Universitetsbiblioteket

    Author : Eddie von Wachenfeldt; Lars Tranvik; David Bastviken; John Downing; [2008]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; flocculation; dissolved organic carbon; allochthonous; carbon sequestration; carbon cycle; boreal lakes; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Freshwater ecology; NATURVETENSKAP Biologi Terrestisk; limnisk och marin ekologi Limnisk ekologi;

    Abstract : Inland waters receive substantial amounts of organic carbon from adjacent watersheds. Only about half of the carbon exported from inland waters reaches the oceans, while the remainder is lost en route. This thesis identifies flocculation as an important and significant fate of carbon in the boreal landscape. READ MORE

  3. 3. Beyond carbon-limitation : A re-evaluation of the ecological role of photorespiration and direct oxygen photoreduction in seagrasses

    University dissertation from Stockholm : Department of Ecology, Environment and Plant Sciences, Stockholm University

    Author : Pimchanok Buapet; Mats Björk; Ilana Berman-Frank; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Carbon limitation; Chlorophyll fluorescence; Electron transport rate; Irradiance; Mehler reaction; Non-photochemical quenching; Photorespiration; Photosynthetic activity; växtfysiologi; Plant Physiology;

    Abstract : Seagrasses living in shallow coastal waters are regularly subjected to changes in environmental conditions including the two essential factors for photosynthesis: dissolved inorganic carbon (DIC) and irradiance. This thesis focuses on the photosynthetic responses of seagrasses to carbon limitation induced by community metabolism and/or high light intensities. READ MORE

  4. 4. Permafrost carbon in a changing Arctic On periglacial landscape dynamics, organic matter characteristics, and the stability of a globally significant carbon pool

    University dissertation from Stockholm : Department of Physical Geography, Stockholm University

    Author : Niels Weiss; Peter Kuhry; Duane Froese; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Permafrost; Carbon; Climate; Arctic; Soil; Organic Matter; Cryosphere; Geomorphology; naturgeografi; Physical Geography;

    Abstract : Organic matter (OM) in arctic permafrost ground contains about twice as much carbon (C) as is currently present in the atmosphere. Climate change is particularly strong in the Arctic, and could cause a considerable part of the OM in permafrost to thaw out, decompose, and be released as greenhouse gases; further enhancing global warming. READ MORE

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

    University dissertation from uppsala : Acta Universitatis Upsaliensis

    Author : Alina Mostovaya; Lars Tranvik; Colin Stedmon; [2017]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; 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;

    Abstract : 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. READ MORE