Claire Treat, PhD, Post doctoral researcher

E-mail: claire.treat (a)

Room number: Snellmania 4138/2

Projects: CAPTURE


My general research interests are in environmental science, ecosystem ecology, biogeochemistry, and wetland ecology. I’m interested in the effects of changing climate, such as warming temperatures, changes in precipitation, longer thawed seasons, and shifts in vegetation, on ecosystem processes and emissions of greenhouse gases (such as carbon dioxide and methane) from wetlands. My research focuses on wetlands throughout the Northern Hemisphere, where large carbon stocks found in peatlands are vulnerable to changes in climate.

My research identifies the controls on the carbon losses from wetlands using techniques such as soil incubations, plant macrofossil analysis, and laboratory experiments to characterize responses of wetland soils to simplified environmental conditions. I pair these experimental and observational analyses with data synthesis and modeling to develop a broad, landscape-scale understanding of controls on carbon cycling that can be used to improve the quantification of the carbon feedback from wetlands.


  • BA  - Mount Holyoke College, 2005
  • MS - University of New Hampshire, 2010
  • PhD- University of New Hampshire, 2014

Selected Publications

Treat, C.C., W.M. Wollheim, R.K. Varner, W.B. Bowden (2016b). Longer thaw seasons increase nitrogen availability for leaching during fall in tundra soils. Environmental Research Letters 11(6), 064013. doi:10.1088/1748-9326/11/6/064013

Jones, M.C., J. Harden, J.A. O’Donnell, K. Manies, C. Treat, S. Ewing (2016). Rapid carbon loss and slow recovery following permafrost thaw in boreal peatlands, Global Change Biology 23(3), 1109-1127. doi: 10.1111/gcb.13403

Treat, C.C., M. C. Jones, P. Camill, M. Garneau, J. W. Harden, G. Hugelius, E. S. Klein, U. Kokfelt, P. Kuhry, J. Loisel, P. Mathijseen, J. A. O’Donnell, P. Oksanen, T. M. Ronkainen, A. B. Sannel, J. Talbot, C. M. Tarnocai and M. Valarinta (2016a). Effects of permafrost aggradation on peat properties as determined from a pan-arctic macrofossil synthesis. Journal of Geophysical Research – Biogeosciences 121, 78–94, doi: 10.1002/2015/JG003061

Treat, C.C, S. Natali, J. Ernakovich, C.M. Iversen, M. Lupascu, A. D. McGuire, R.J. Norby, T. Roy Chowdhury, A. Richter, H. Santruckova, C. Schadel, E.A.G. Schuur, V. Sloan, M.R. Turetsky, M. Waldrop (2015). Controls on CH4 and CO2 production from permafrost soil carbon under saturated conditions. Global Change Biology 21(7): 2787-2803, doi: 10.1111/gcb.12875

Schuur, E.A.G., A.D. McGuire, G. Grosse, J.W. Harden, D.J. Hayes, G. Hugelius, C.D, Koven, P. Kuhry, D.M. Lawrence, S.M. Natali, D. Olefeldt, V.E. Romanovsky, C. Schädel, K. Schaefer, M. Turetsky, C.C. Treat, J.E. Vonk (2015). Climate Change and the Permafrost Carbon Feedback. Nature 520, 171–179. doi:10.1038/nature14338

Treat, C.C., W.M. Wollheim, R.K. Varner, A.S. Grandy, J. Talbot and S. Frolking (2014). Temperature and peat type control CO2 and CH4 production in Alaskan permafrost peats. Global Change Biology 20: 2674-2686. doi: 10.1111/gcb.12572.

Profile in SoleCRIS