Search for dissertations about: "bacterial community composition"

Showing result 1 - 5 of 57 swedish dissertations containing the words bacterial community composition.

  1. 1. Bacterial Activity and Community Composition in the Rhizosphere. Influence of plant species, root age, nitrogen addition and mycorrhizal status

    University dissertation from Department of Ecology, Lund University

    Author : Katarina Söderberg; Lund University.; Lunds universitet.; [2003]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; CLPP; Microbiology; bacteriology; virology; mycology; Mikrobiologi; bakteriologi; virologi; mykologi; Biolog; PLFA; mycorrhizal status; nitrogen addition; along roots; plant species; root age; thymidine and leucine incorporation; bacterial composition; Rhizosphere; bacterial activity;

    Abstract : Microbial activity in soil is generally assumed to be limited by carbon availability. The soil closest to roots, the rhizosphere, is therefore a zone of high microbial activity due to carbon containing substances released by the root. In this work short-term effects in the rhizosphere have been the subject of investigation. READ MORE

  2. 2. Effect of environmental factors on bacterioplankton community composition, diversity and functionality

    University dissertation from Växjö, Kalmar : Linnaeus University Press

    Author : Johanna Sjöstedt; Linnéuniversitetet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Mikrobiologi; Microbiology; Akvatisk ekologi; Aquatic Ecology; marine microbiology; bacterioplankton; community composition; diversity; functionality; environmental factors; disturbance; distribution;

    Abstract : The ocean covers more than 70 % of the Earth surface and represents the largest ecosystem on Earth. Bacteria are an important part of the marine food web not only in remineralisation but also since they utilize dissolved organic matter (DOM) and make the energy available to higher trophic levels. READ MORE

  3. 3. Substrate control of community composition and functional adaptation in marine bacterioplankton

    University dissertation from Växjö : Linnaeus University Press

    Author : Julie Dinasquet; Linnéuniversitetet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Mikrobiologi; Microbiology; Akvatisk ekologi; Aquatic Ecology; marine microbial ecology; bacterioplankton; community composition; functional adaptation; dissolved organic carbon; bottom-up and top down factors; ctenophore Mnemiopsis leidyi; food-webs; Southern-Ocean; Antarctica;

    Abstract : A drop of sea-water is teeming with a million of bacteria, on which pelagic food-webs and biogeochemical cycles depend. These bacteria thrive on a wide range of dissolved organic carbon (DOC) compounds produced through biotic and abiotic processes. READ MORE

  4. 4. Composition and dynamics of the bacterial community in aerobic granular sludge reactors

    University dissertation from Gothenburg : Chalmers tekniska högskola

    Author : Enikö Barbara Szabo; [2017]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; qPCR; sequencing batch reactors; microbial community composition; T-RFLP; functional groups; Illumina MiSeq; wastewater; aerobic granular sludge; nitrogen removal; population dynamics;

    Abstract : The aerobic granular sludge (AGS) technology is probably the future standard for wastewater treatment, due to its low footprint and low energy consumption. Although achieving granulation is usually not a challenge anymore, our understanding of the community assembly during start-up, and of the microbial ecology of these reactors in general, is incomplete. READ MORE

  5. 5. Assembly Mechanisms in Aquatic Bacterial Communities The Role of Disturbances, Dispersal and History

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Mercè Berga Quintana; Uppsala universitet.; [2013]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; diversity; community composition; metacommunity;

    Abstract : Environmental conditions, biotic interactions, dispersal and history have been suggested to be important processes influencing the spatial distribution of organisms and thus to affect community assembly. Understanding how these processes influence community assembly is important, particularly because community diversity and composition are suggested to be relevant for ecosystem functioning. READ MORE