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Filtering by: Creator Murray, Michael Remove constraint Creator: Murray, Michael Advisor Colwell, Frederick S. Remove constraint Advisor: Colwell, Frederick S.

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  • Characterizing drivers of microbial community structure and function in diverse marine sediments

    Creator:
    Graw, Michael F.
    Abstract:
    Marine sediments are one of the largest habitats for microbial life on earth. These microorganisms play critical roles in biogeochemical cycling both within the subsurface and between the sediment and water columns. However, microbial communities in sediments are highly heterogeneous and the factors defining microbial community structure and metabolic function...
    Resource Type:
    Dissertation
    Full Text:
    Michael F. Graw for the degree of Doctor of Philosophy in Ocean, Earth, and Atmospheric Science

  • Comparing Sediment Microbial Communities of Arctic Beaver Ponds to Tundra Lakes and Streams

    Creator:
    Shannon, Kelly
    Abstract:
    In recent decades the habitat of North American beaver (Castor canadensis) has expanded from boreal forests into pan-Arctic tundra ecosystems. It is unknown how the advance of beavers into Arctic watersheds will impact microbial communities responsible for the mineralization of organic matter (OM), which has implications for carbon cycling. To...
    Resource Type:
    Masters Thesis
    Full Text:
    environment to work in. Kelly Shannon1, Natasha R. Christman2, Byron C. Crump2, Michael P

  • Microbial Community Dynamics of an Aquifer Biostimulated to Precipitate Calcite

    Creator:
    Ohan, Juliette
    Abstract:
    Microbial-induced calcite (CaCO₃) precipitation (MICP) is a well-known natural phenomenon where microbes precipitate calcite in their environment as a result of metabolic activity. It has recently been of interest as a bioengineered technique to stabilize soils for construction applications. A known metabolic pathway to induce MICP is ureolysis, where introduced...
    Resource Type:
    Masters Thesis
    Full Text:
    members of the “Geomicro” lab group, and CEOAS and Microbiology cohort particularly Michael Graw, Scott

  • Geomicrobiology of marine sediment containing methane

    Creator:
    Briggs, Brandon R.
    Abstract:
    Marine sediments contain an abundance of methane that is biologically produced and plays a significant role in the global carbon cycle. Microbes responsible for the carbon cycle in marine sediments, and the processes that they carry out, need to be characterized in order to fully understand the role of this...
    Resource Type:
    Dissertation
    Full Text:
    data and valuable critiques. Dr. Michael Riedel provided the geologic overview of the sites. Dr