Claire Treat

Research Scientist II
Phone: (603) 862-2706
Office: Earth Systems Research Center, Morse Hall, Durham, NH 03824
Headshot of Claire Treat

My main research objective is to quantify the response of northern ecosystems to environmental changes resulting from factors such as climate warming, permafrost thaw, longer duration of soil thaw, and interannual variability. I am particularly interested in the interactions between carbon (C) and nitrogen (N) cycles in plants and soils, especially in cold environments, like tundra and boreal regions. I use several different approaches to study the C and N cycles: field observations, field experiments, laboratory experiments, modeling, and data synthesis. I really enjoy data analysis and writing. In my free time, I enjoy outdoor adventures & traveling.


  • Ph.D., Earth & Environmental Science, University of New Hampshire
  • M.S., Earth Sciences, University of New Hampshire
  • B.A., Environmental Studies, Mount Holyoke College

Research Interests

  • Biogeochemistry
  • Computer Simulation/Modeling
  • Data Analysis
  • Data Mining
  • Greenhouse Gases
  • Methane
  • Soil Sciences
  • Terrestrial Ecology
  • Wetlands

Selected Publications

Voigt, C., Marushchak, M. E., Mastepanov, M., Lamprecht, R. E., Christensen, T. R., Dorodnikov, M., . . . Biasi, C. (2019). Ecosystem carbon response of an Arctic peatland to simulated permafrost thaw. Global Change Biology, 25(5), 1746-1764. doi:10.1111/gcb.14574

Treat, C. C., Kleinen, T., Broothaerts, N., Dalton, A. S., Dommain, R., Douglas, T. A., . . . Brovkin, V. (2019). Widespread global peatland establishment and persistence over the last 130,000 y. Proceedings of the National Academy of Sciences, 116(11), 4822-4827. doi:10.1073/pnas.1813305116

Treat, C. C., Marushchak, M. E., Voigt, C., Zhang, Y., Tan, Z., Zhuang, Q., . . . Shurpali, N. J. (2018). Tundra landscape heterogeneity, not interannual variability, controls the decadal regional carbon balance in the Western Russian Arctic. Global Change Biology, 24(11), 5188-5204. doi:10.1111/gcb.14421

Treat, C. C., Bloom, A. A., & Marushchak, M. E. (2018). Nongrowing season methane emissions-a significant component of annual emissions across northern ecosystems. Global Change Biology, 24(8), 3331-3343. doi:10.1111/gcb.14137

Treat, C. C., & Jones, M. C. (2018). Near-surface permafrost aggradation in Northern Hemisphere peatlands shows regional and global trends during the past 6000 years. The Holocene, 28(6), 998-1010. doi:10.1177/0959683617752858

Schädel, C., Bader, M. K. -F., Schuur, E. A. G., Biasi, C., Bracho, R., Čapek, P., . . . Wickland, K. P. (2016). Potential carbon emissions dominated by carbon dioxide from thawed permafrost soils. Nature Climate Change, 6(10), 950-953. doi:10.1038/nclimate3054

Schuur, E. A. G., McGuire, A. D., Schädel, C., Grosse, G., Harden, J. W., Hayes, D. J., . . . Vonk, J. E. (2015). Climate change and the permafrost carbon feedback. Nature, 520(7546), 171-179. doi:10.1038/nature14338

Frolking, S., Talbot, J., Jones, M. C., Treat, C. C., Kauffman, J. B., Tuittila, E. -S., & Roulet, N. (2011). Peatlands in the Earth’s 21st century climate system. Environmental Reviews, 19(NA), 371-396. doi:10.1139/a11-014

Turetsky, M. R., Treat, C. C., Waldrop, M. P., Waddington, J. M., Harden, J. W., & McGuire, A. D. (n.d.). Short-term response of methane fluxes and methanogen activity to water table and soil warming manipulations in an Alaskan peatland. Journal of Geophysical Research, 113. doi:10.1029/2007jg000496

Treat, C. C., Bubier, J. L., Varner, R. K., & Crill, P. M. (n.d.). Timescale dependence of environmental and plant-mediated controls on CH4flux in a temperate fen. Journal of Geophysical Research, 112(G1). doi:10.1029/2006jg000210

Most Cited Publications