Kristen Krumhardt

CV

Postdoctoral Scholar

Departments

Environmental Studies

Education

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

Contact Information

kristen.krumhardt@colorado.edu

(Office) 303 735-6676

Specialty

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.

Research

Active Research

Research Labs and Groups

Ocean Biogeochemistry Research Group

Publications

FeaturedPublications

Geneviève Elsworth, Nikki Lovenduski, McKinnon, K. A., Kristen Krumhardt, Riley Brady 2020: Finding the fingerprint of anthropogenic climate change in marine phytoplankton abundance. Current Climate Change Reports, 6: 37-46. DOI: 10.1007/s40641-020-00156-w

Kristen Krumhardt, Nikki Lovenduski, Long, M. C., Luo, J. Y., Lindsay, K., Yeager, S., Harrison, C. 2020: Potential predictability of net primary production in the ocean. Global Biogeochemical Cycles, 34(6): e2020GB006531. DOI: 10.1029/2020GB006531

Crawford, A.D., Kristen Krumhardt, Nikki Lovenduski, van Dijken, G.L., Arrigo, K.R. 2020: Summer high‐wind events and phytoplankton productivity in the Arctic Ocean. Journal of Geophysical Research: Oceans, 125, e2020JC016565. DOI: 10.1029/2020JC016565

Kristen Krumhardt, Nikki Lovenduski, 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

Negrete-García, G., Nikki Lovenduski, Hauri, C., Kristen Krumhardt, Lauvset, S. K. 2019: Sudden emergence of a shallow aragonite saturation horizon in the Southern Ocean. Nature Climate Change, 9(4): 313-317. DOI: 10.1038/s41558-019-0418-8

Natalie Freeman, Nikki Lovenduski, David Munro, Kristen Krumhardt, Lindsay, K., Long, M. C., Maclennan, M. 2018: The variable and changing Southern Ocean Silicate Front: Insights from the CESM Large Ensemble. Global Biogeochemical Cycles, 32(5): 752-768. DOI: 10.1029/2017GB005816

Kristen Krumhardt, Nikki Lovenduski, Long, M. C., Lindsay, K. 2017: Avoidable impacts of ocean warming on marine primary production: Insights from the CESM ensembles. Global Biogeochemical Cycles, 31(1): 114-133. DOI: 10.1002/2016GB005528

Kristen Krumhardt, Nikki Lovenduski, Iglesias-Rodriguez, M. D., Kleypas, J. A. 2017: Coccolithophore growth and calcification in a changing ocean. Progress in Oceanography, 159: 276-295. DOI: 10.1016/j.pocean.2017.10.007

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

Multiple effects of anthropogenic climate change on the growth and calcification of marine phytoplankton. Kristen Krumhardt. University of Colorado Boulder, PhD, 2018.

Academics

Faculty Advisors

Nikki Lovenduski, Associate Professor

INSTAAR - Institute of Arctic And Alpine Research