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Kim Halsey sitting in lab

Kimberly H. Halsey

Associate Professor
Department of Microbiology

Kimberly H. Halsey

Associate Professor
Department of Microbiology



Ph.D., Oregon State University


Our research goal is to understand the processes that control the flow of carbon and energy through the marine carbon cycle. Phytoplankton are the single celled microbes that use light energy to convert carbon dioxide to organic carbon in aquatic systems. Research in my lab focuses on understanding strategies used by phytoplankton to optimize their growth. We are interested in determining how these strategies vary with different environmental conditions (i.e., nutrients, light, CO2, pH) and between species. Understanding these growth strategies can then be used to improve global models of primary production and models of microbial phototrophic growth.

Research Interests

  • Environmental Microbiology
  • Phytoplankton Ecophysiology
  • Systems Biology
  • ┬áVolatile Organic Carbon


  • Behrenfeld, M.J., Moore, R.H., Hostetler, C.A., Graff, J., Gaube, P., Russell, L.M., Chen, G., Doney, S.C., Giovannoni, S., Liu, Hongyu, Proctor, C., Bolanos, L.M., Baetge, N., Davie-Martin-C., Westberry, T.K., Bates, T.S., Bell, T.G., Bidle, K.D., Boss, E.S., Brooks, S.D., Cairns, B., Carlson, C., Halsey, K., et al. 2019. The North Atlantic Aerosol and Marine Ecosystem Study (NAAMES): Science Motive and Mission Overview. Front. in Mar. Sci. 6.
  • Giovannoni, S.G., Halsey, K.H., Saw, J., Muslin, O., Suffridge, C.P., Sun, J., Lee, C., Moore, E.R., Temperton, B., and Noell, S.E. 2019. A parasitic cycle that shuttles energy from phytoplankton to heterotrophic bacterioplankton. mBio 10(2):e00246-19.
  • Dreher, T.W., Collart, L.P., Mueller, R.S., Halsey, K.H., Bildfell, R.J., Schreder, P., Sobhakumari, A., and Ferry, R. 2019. Anabaena/Dolichospermum as the source of lethal microcystin levels responsible for a large cattle toxicosis event. Elsevier/Toxicon: X; 1(100003).