Kristen Krumhardt

Kristen Krumhardt CV

Postdoctoral Scholar



  • PhD: University of Colorado Boulder, 2018
  • MS: University of Southern Maine, 2007
  • BA: Iowa State University, 2003

Contact Information

(Office) 303 735-6676


Marine phytoplankton, global carbon cycle dynamics, ocean acidification, marine microbial ecology, human-environment interactions

Research Interests

I am interested in how the biology of the oceans affects global biogeochemical cycles. My current research focuses on how marine phytoplankton are responding to global change. Specifically, I am studying coccolithophores, a type of calcifying phytoplankton that are widespread and influence global carbon cycling. Calcifying organisms, such as coccolithophores, can be especially susceptible to changes in ocean chemistry from anthropogenic carbon emissions (ocean acidification). I use oceanographic data and Earth System Models to improve projections on how coccolithophore populations and marine ecosystems may change with further warming and ocean acidification.




Kristen KrumhardtNikki Lovenduski (she/her), Long, M. C., Levy, M., Lindsay, K., Moore, J. K., Nissen, C. 2019: Coccolithophore growth and calcification in an acidified ocean: Insights from Community Earth System Model simulations. Journal of Advances in Modeling Earth Systems, 11(5): 1418-1437. DOI: 10.1029/2018MS001483

Kaplan, J. O., Kristen Krumhardt, Gaillard, M.-J., Sugita, S., Trondman, A.-K., Fyfe, R., Marquer, L., Mazier, F., Nielsen, A. B. 2017: Constraining the deforestation history of Europe: Evaluation of historical land use scenarios with pollen-based land cover reconstructions. Land, 6(4): article 91. DOI: 10.3390/land6040091

All publications by Kristen Krumhardt >

Theses & Dissertations