Dr. Marshall Bowles

Marshall Bowles

Adjunct Faculty
Dauphin Island Sea Lab
ResearchGate

Education

  • Ph.D., 2011, Marine Science, University of Georgia
  • M.E.M., 2005, Water and Air Resources, Duke University
  • B.S., 2003, Integrated Science and Technology, James Madison University

Research Interests

  • Biogeochemistry
  • Microbial ecology
  • Geomicrobiology
  • Molecular microbiology
  • Marine deep subsurface biosphere

Current Projects

  • Quantifying marine biomass through geologic time
  • Processes related to microbial methane emission in coastal areas
  • Modeling the methane hydrate inventory along continental shelves
  • Processes and factors limiting marine microorganisms
  • Evaluation of the metabolic capacity of deep subsurface fungal communities
  • Defining the influence of nutrient regime changes on microbial communities

Selected Publications

  • Bowles, M.W., Hunter, K.S., Samarkin, V.A., Joye, S.B. (2016) Variations in geochemical signatures and microbial activity within and between diverse cold seep habitats along the lower continental slope of the Gulf of Mexico. Deep Sea Research II 129, 31-40.
  • Inagaki, F., Hinrichs, K.-U., Kubo, Y., Bowles, M.W., et al. (2015) Exploring deep microbial life in coal-bearing sediment down to ~2.5 km below the ocean floor. Science 349(6246): 420-424.
  • Bowles, M.W., Mogollón, J.M., Kasten, S., Zabel, M., Hinrichs, K.-U. (2014) Global rates of marine sulfate reduction rates and implications for subseafloor metabolic activities. Science 344(6186): 889-891.
  • Bowles, M.W., Nigro, L.M., Teske, A.P., and Joye, S.B. (2012) Denitrification and environmental factors influencing nitrate removal in Guaymas Basin hydrothermally-altered sediments. Frontiers in Microbiology 3:377.
  • Bowles, M.W., Samarkin, V.A., Joye, S.B. (2011) Improved measurement of microbial activity in deep-sea sediments at in situ pressure and gas concentration. Limnology and Oceanography Methods 9: 499-506.
  • Bowles, M.W., Samarkin, V.A., Loftis, K.M., and Joye, S.B. (2011) Weak coupling between sulfate reduction and the anaerobic oxidation of methane in methane-rich seafloor sediments in ex situ incubations. Geochimica et Cosmochimica Acta 75: 500-519.
  • Bowles, M.W., and Joye, S.B. (2010) High rates of denitrification and nitrate removal in cold seep sediments. ISME Journal 5(3): 565-567.
  • Samarkin, V.A., Madigan, M.M., Bowles, M.W., Casciotti, K.L., McKay, C.P., Joye, S.B. (2010) Abiotic nitrous oxide emission from the hypersaline Don Juan Pond in Antarctica. Nature Geoscience 3: 341-344.