Stan D Wullschleger

Stan Wullschleger

Stan D Wullschleger

Director, Environmental Sciences Division; Director, Climate Change Science Institute


Stan joined the Environmental Sciences Division (ESD) in 1990 as a Distinguished Holleander Post-doctoral Fellow. His education is in forest biology (BS and MS, Colorado State University) and crop physiology (PhD, University of Arkansas). He has spent more than 25 years at ORNL conducting research in a creative and team-oriented environment. Stan studies the sustainable use of herbaceous and woody bioenergy crops as a renewable source of transportation fuel; participates in fundamental investigations of plant biology using a variety of molecular approaches; and investigates the physiological mechanisms by which terrestrial ecosystems respond to global environmental change. He is Director for the Next-Generation Ecosystem Experiments (NGEE Arctic) project, an interdisciplinary team of more than 140 scientists who are working to address how permafrost thaw in a warming Arctic will affect important ecosystem-climate feedbacks. The project is founded on a systems-level perspective with integrated, model-inspired studies in geophysics, hydrology, biogeochemistry, vegetation dynamics, and multi-scale modeling. Stan also serves as Director of the Environmental Sciences Division and the Climate Change Science Institute where he is responsible for leadership, strategic planning,


Outstanding Alumnus, Crop, Soil, and Environmental Sciences, University of Arkansas (2016)

UT-Battelle Corporate Fellow (2013)

UT-Battelle Awards Night Recipient, Science Communicator (2013)

UT-Battelle Awards Night Director's Award for Outstanding Team Accomplishment (2007)

UT-Battelle Awards Night Winner, Scientific Research Team (2007)

Scientific Achievement Award (1998), Environmental Sciences Division, Oak Ridge, TN

Alexander Hollaender Distinguished Postdoctoral Fellowship (1990), ORAU, Oak Ridge, TN

Outstanding Graduate Student Award (1990), American Society of Agronomy

Gerald O. Mott Scholarship (1989), Crop Science Society of America

BASF Outstanding Presentation Award (1989), Beltwide Cotton Production Research Confer­ences

Aubrey E. Harvey Award (1988), Sigma Xi Research Society, University of Arkansas

Outstanding Agronomy Ph.D. Student (1987), Department of Agronomy, University of Arkansas

Hill Memorial Fellowship (1981), Department of Forest Science, Colorado State University

Colorado Graduate Scholarship (1980), Graduate School, Colorado State University


Next-Generation Ecosystem Experiments (NGEE Arctic):

Spruce and Peatland Responses Under Climatic and Environmental Change (SPRUCE):


Yang, Z., S.D. Wullschleger, L. Liang, D.E. Graham, and B. Gu. 2016a. Effects of warming on the degradation and production of low molecular-weight labile organic carbon in an Arctic tundra soil. Soil Biology and Biochemistry 95: 202-211.

Yang, Z., W. Fang, X. Lu, G-P Sheng, D.E. Graham, L. Liang, S.D. Wullschleger, and B. Gu. 2016b. Warming increases methylmercury production in an Arctic soil. Environmental Pollution 214: 504-509.

Xu, X., S. Goswami, J. Gulledge, S.D. Wullschleger, and P.E. Thornton. 2016. Interdisciplinary research in climate and energy sciences. Wiley Interdisciplinary Reviews: Energy and Environment 5: 49-56.

Xu, X., F. Yuan, P. J. Hanson, S.D. Wullschleger, P.E. Thornton, W.J. Riley, X. Song, D.E. Graham, C. Song, and H. Tian. 2016. Reviews and syntheses: Four decades of modeling methane cycling in terrestrial ecosystems. Biogeosciences 13: 3735-3755.

Throckmorton, H.M., B.D. Newman, J.M. Heikoop, G.B. Perkins, X. Feng, D.E. Graham, D. O’Malley, V.V. Vesselinov, J. Young, S.D. Wullschleger, and C.J. Wilson. 2016. Active layer hydrology in an Arctic tundra ecosystem: quantifying water sources and cycling using stable isotopes. Hydrological Processes 30: 4972–4986.

Langford, Z.L., J. Kumar, F.M. Hoffman, R.J. Norby, S.D. Wullschleger, V.L. Sloan, and C.M. Iversen. 2016. Mapping Arctic plant functional type distributions in the Barrow Environmental Observatory using WorldView-2 and LiDAR datasets. Remote Sensing 8: Article 733.

Abraham, P.E., H. Yin, A.M. Borland, D. Weighill, S.D. Lim, H.C. De Paoli, N. Engle, P.C. Jones, R. Agh, D.J. Weston, S.D. Wullschleger, T. Tschaplinski, D. Jacobson, J.C. Cushman, R.L. Hettich, G.A. Tuskan, and X. Yang. 2016. Temporal dynamics of transcripts, proteins, and metabolites that define crassulacean acid metabolism in Agave. Nature Plants 2: 16178.

Raz-Yaseef, N., M.S. Torn, Y. Wu, D.P. Billesbach, A.K. Liljedahl, T.J. Kneafsey, V.E. Romanovsky, D.R. Cook, and S.D. Wullschleger. 2017. Large CO2 and CH4 emissions from polygonal tundra during spring thaw in northern Alaska. Geophysical Research Letters 44: 504-513.

Walker, A.P, K.R. Carter, L. Gu, P.J. Hanson, A. Malhotra, R.J. Norby, S.D. Sebestyen, S.D. Wullschleger, and D.J. Weston. 2017. Biophysical drivers of seasonal variability in Sphagnum gross primary production in a northern temperate bog. JGR Biogeosciences 122: 1078-1097.

Raz-Yaseef, N., J. Young-Robertson, T. Rahn, V. Sloan, B. Newman, C. Wilson, S.D. Wullschleger, and M.S. Torn. 2017. Evapotranspiration across plant types and geomorphological units in polygonal arctic tundra. Journal of Hydrology 553: 816-825.

Rogers, A., S.P. Serbin, K.S. Ely, V.L. Sloan, and S.D. Wullschleger. 2017. Terrestrial biosphere models underestimate photosynthetic capacity and CO2 assimilation in the Arctic. New Phytologist 216: 1090-1103.

Walker, A.P., L. McCormack, J. Messier, I. Myers-Smith, and S.D. Wullschleger. 2017. Trait covariation: The functional warp of plant diversity? New Phytologist 216: 976-980.

Wullschleger, S.D. 2017. Scientist Profile, Stan D. Wullschleger. New Phytologist 216: 981-983.

Fisher, J.B., D.J. Hayes, C. Schwalm, D.N. Huntzinger, E. Stofferahn, K. Schaefer, Y. Luo, S.D. Wullschleger, S. Goetz, C.E. Miller, P. Griffith, S. Chadburn, A. Chatterjee, P. Ciais, T. Douglas, H. Genet, A. Ito, B. Poulter, B. Rogers, H. Tian, W. Wang, X. Yongkang, Z-L Yang, and N. Zeng. 2018. Missing pieces to modeling the Arctic-Boreal puzzle. Environmental Research Letters (in press).