Sökning: "bacterial production"

Visar resultat 1 - 5 av 384 avhandlingar innehållade orden bacterial production.

  1. 1. Bacterial use of allochthonous organic carbon for respiration and growth in boreal freshwater systems

    Detta är en avhandling från Umeå University, Dept. of Ecology and Environmental Science

    Författare :Martin Berggren; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bacterial respiration; boreal; streams; lakes; bacterial production; bacterial growth efficiency; allochthonous organic carbon; low molecular weight compounds;

    Sammanfattning : Aquatic systems worldwide receive large amounts of organic carbon from terrestrial sources. This ‘allochthonous’ organic carbon (AlloOC) affects critical physical and chemical properties of freshwater ecosystems, with consequences for food web structures and exchange of greenhouse gases with the atmosphere. LÄS MER

  2. 2. Bacterial use of allochthonous organic carbon for respiration and growth in boreal freshwater systems

    Detta är en avhandling från Umeå : Umeå universitet, Institutionen för ekologi, miljö och geovetenskap

    Författare :Martin Berggren; Mats Jansson; Michael L. Pace; [2009]
    Nyckelord :lakes; streams; boreal; bacterial respiration; bacterial production; bacterial growth efficiency; allochthonous organic carbon; low molecular weight compounds; naturgeografi; Physical Geography;

    Sammanfattning : Aquatic systems worldwide receive large amounts of organic carbon from terrestrial sources. This ‘allochthonous’ organic carbon (AlloOC) affects critical physical and chemical properties of freshwater ecosystems, with consequences for food web structures and exchange of greenhouse gases with the atmosphere. LÄS MER

  3. 3. Importance of bacterial maintenance respiration and baseline respiration for development of coastal hypoxia

    Detta är en avhandling från Umeå : Umeå Universitet

    Författare :Kevin Vikström; Johan Wikner; Jan Karlsson; Josep M. Gasol; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ecology; Respiration; Estuarine; Allochthonous; Maintenance; primary production; bacterial production;

    Sammanfattning : Reduced oxygen concentrations and increasing hypoxic zones havebecome more common in the sea due to climate change andeutrophication. The main cause of oxygen loss in oxygenatedenvironments is respiration. LÄS MER

  4. 4. Carbon metabolism in clear-water and brown-water lakes

    Detta är en avhandling från Umeå : Institutionen för ekologi, miljö och geovetenskap, Department of Ecology and Environmental Sciences

    Författare :Jenny Ask; Jan Karlsson; Mats Jansson; Rolf Vinebrooke; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; clear-water lakes; brown-water lakes; primary production; bacterial production; benthic; pelagic; net ecosystem production; allochthonous organic carbon; CO2; DOC; NATURAL SCIENCES Earth sciences Exogenous earth sciences Physical geography; NATURVETENSKAP Geovetenskap Exogen geovetenskap Naturgeografi; NATURAL SCIENCES Biology Terrestrial; freshwater and marine ecology Freshwater ecology; NATURVETENSKAP Biologi Terrestrisk; limnisk och marin ekologi Limnisk ekologi; limnologi; Limnology; naturgeografi; Physical Geography;

    Sammanfattning : The trophic state of lakes is commonly defined by the concentration of nutrients in the water column. High nutrient concentrations generate high phytoplankton production, and lakes with low nutrient concentrations are considered low-productive. LÄS MER

  5. 5. Primary Marine Aerosol Production Studies using bubble-bursting experiments

    Detta är en avhandling från Stockholm : Department of Applied Environmental Science (ITM), Stockholm University

    Författare :Kim Hultin; Douglas Nilsson; Radovan Krejci; Ian Cousins; Åke Hagström; Erik Swietlicki; [2010]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; sea spray; water temperature; dissolved oxygen; photosynthesis; bacterial emissions; V-TDMA; mixing state; eddy covariance; NATURAL SCIENCES; NATURVETENSKAP; Applied Environmental Science; tillämpad miljövetenskap;

    Sammanfattning : Aerosol particles affect the Earth’s climate, although their impact is associated with large uncertainties. Primary marine aerosol represents a significant fraction of the global aerosol budget considering the Earth’s 70-percentage coverage by oceans. LÄS MER