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Sheri Floge

If you need to locate a faculty member with knowledge about particular functions of SMS (e.g., graduate admissions), you can find them on the list of current faculty committees.

Sheri Floge

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Sheri Floge

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The Ohio State University
Department of Microbiology 
Columbus, OH  43210


Ph.D. University of Maine 2014


I am interested in how marine microbes interact with one another and their environment, the chemical reactions that mediate such interactions and the resulting impact on global elemental cycles. My Ph.D. research focused on the impact of virus infections on intact, infected eukaryotic marine microbes and included bioinformatic and flow-cytometric screening for persistent (cryptic) infections and combined molecular, chemical and ecological methods to quantify virus-induced biochemical alterations of phytoplankton cells and the resultant impact on copepod grazing. I joined the Sullivan Lab in August 2014 where my projects include using transcriptomics and metabolomics to explore interactions between model systems of viruses, bacteria, phytoplankton and grazers and developing experimental methodology to quantify the role of marine viruses in trophic transfer of carbon.


Research interests

My research is focused on the role of persistent virus infections in the ecology of marine eukaryotic phytoplankton.  I am currently isolating and characterizing novel viruses that form long-term symbioses with eukaryotic phytoplankton in culture systems.  


  • Floge, S. A., K. R. Hardy, E. Boss and M. L. Wells. 2009. Analytical intercomparison between
    type I and type II long-pathlength liquid core waveguides for the measurement of chromphoric dissolved organic matter. Limnol. Oceanogr.: Methods 7: 260 – 268.

    For more information: Full Text

  • Floge, S. A. and M. L. Wells. 2007. Variation in colloidal chromophoric dissolved organic
    matter in the Damariscotta Estuary, Maine. Limnol. Oceanogr. 52: 32 – 45.

    For more information: Full Text

  • Mulholland, M. R., S. Floge, E. J. Carpenter and D. G. Capone. 2002. Phosphorous dynamics
    in cultures and natural populations of Trichodesmium spp. Marine Ecology Progress Series. 239: 45-55.
  • Lin, S., S. Henze, P. Lundgren, B. Bergman and E. Carpenter. 1998. Whole-cell
    immunolocalization of nitrogenase in marine diazotrophic Cyanobacteria, Trichodesmium spp. Appl. Environ. Microbiol. 64: 3052-3058.

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