Search for dissertations about: "microbial community"

Showing result 21 - 25 of 211 swedish dissertations containing the words microbial community.

  2. 21. The role of allelopathy in microbial food webs

    Author : Astrid Weissbach; Catherine Legrand; Ellen Van Donk; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Microbial food web; Allelopathy; Alexandrium tamarense; Prymnesium parvum; Infochemicals; marine plankton community; Freshwater ecology; Limnisk ekologi; Akvatisk ekologi; Aquatic Ecology;

    Abstract : Phytoplankton produce allelochemicals; excreted chemical substances that are affecting other microorganisms in their direct environment.In my thesis, I investigated strain specific variability in the expression of allelochemicals of the harmful flagellate Prymnesium parvum, that is euryhaline but mainly bloom forming in brackish water. READ MORE

  4. 22. Microbial Biofilms in the Bioinformatics Era

    Author : Kemal Sanli; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; metagenomics; bioinformatics software; microbial biofilms; Next Generation Sequencing; pathway analysis; periphyton; marine biofilms; FANTOM; PACFM; PACFM;

    Abstract : Adverse effects of anthropogenic impact on the environment have become conspicuous in the past century and among others include the gradual increase in the global CO2 levels, the contamination of air, soil and water by toxic chemicals, and the emergence of antimicrobial resistance among pathogenic microbial species. Microorganisms partake in an extreme diversity of activities in the environment, and hence, constitute the prime candidates to be investigated in understanding of the progression and effects of the aforementioned environmental hazard scenarios. READ MORE

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

    Author : Julie Dinasquet; Lasse Riemann; Edward F. DeLong; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; 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; Mikrobiologi; Microbiology; Akvatisk ekologi; Aquatic Ecology;

    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

  6. 24. Biogas production from lignocellulosic materials : microbial community structure

    Author : Li Sun; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES;

    Abstract : Lignocellulosic materials such as agricultural plant residues are widely available in large amounts and can be used for production of biogas without the risk of competition for arable land. However, the intricate structure of lignocellulose, a major component of the plant cell wall, limits microbial degradation and consequently results in low degradation rate and low biogas yield. READ MORE

  7. 25. Soil microbial responses to mild winters and seasonal change

    Author : Johanna Birgander; Biodiversitet; []
    Keywords : Arbuscular mycorrhizal fungi AMF ; RESPIRATION; Stable isotope; Fungal growth; PLFA; NLFA; Microbial community composition; bacterial growth; Aboveground-belowground interactions; Temperature adaptation; Climate change;

    Abstract : The aim with this thesis work was to study microorganisms response to milder winters, different seasons, and altered temperature. Winter warming treatments were established in a semi-natural temperate grassland, simulating mild winters for two years. READ MORE