Jason Keller, Ph.D.

Kravis Professor of Integrated Sciences: Ecology


Kravis Department of Integrated Sciences

Areas of Expertise

Environmental science


B.S. Biological Sciences, University of Notre Dame

Ph.D. Biological Sciences, University of Notre Dame

Research and Publications

Keller, J.K., S.D. Bridgham, K.K. Takagi, C.A Zalman, J.E. Rush*, C. Anderson*, J.M. Mosolf*, and K.N. Gabriel*.  2023.  Microbial organic matter reduction regulates carbon dioxide and methane production across an ombrotrophic-minerotrophic peatland gradient.  Soil Biology & Biochemistry 182:109045. (* = undergraduate collaborator)

Defrenne, C.E., J.A.M. Moore, C.L. Tucker, L.J. Lamit, E.S. Kane, R.K. Kolka, R.A. Chimner,  J.K. Keller, and E.A. Lilleskov.  2023.  Peat loss collocates with a threshold in plant-mycorrhizal associations in drained peatlands encroached by trees.  New Phytologist 240: 412-425.

Song, T., Y. Liu, M. Kolton, R. Wilson, J. Keller, J. Rolando, J. Chanton, and J. Kostka.  2023. Porewater inhibits greenhouse gas production and regulates the response of organic matter decomposition to warming in anoxic peat from a Sphagnum-dominated bog.   FEMS Microbiology Ecology 99: 1-15.

Brown, M., J.K. Keller, and C.R. Whitcraft.  2022. Relationship of Sphaeroma quoianum to sediment characteristics and invertebrate community. Biological Invasions 24:3631-3645. 

LeeWays, C., L.L. McCullough, A.M. Hopple, J.K. Keller, and S.D. Bridgham.  2022. Homoacetogenesis competes with hydrogenotrophic methanogenesis for substrates in a peatland experiencing ecosystem warming.  Soil Biology & Biochemistry 172: 108759.

Ma, S. L. Jiang, R.M. Wilson, J.P. Chanton, S. Bridgham, S. Niu, C.M. Iversen, A. Malhotra, J. Jiang, X. Lu, Y. Huang, J. Keller, X. Xu, D.M. Ricciuto, P.J. Hanson, and Y. Luo.  2022.  Evaluating alternative ebullition models for predicting peatland methane emissions and its pathways via data-model fusion.  Biogeosciences 19:2245-2262.

Rush*, J.E., C.A. Zalman, G. Woerndle, E.L. Hanna*, S.D. Bridgham, and J.K. Keller.  2021.  Warming promotes the use of organic matter as an electron acceptor in a peatland.  Geoderma 410:115303. (* = undergradaute collaborator) 

Wilson, R.M., N.A. Griffiths, A. Visser, K.J. McFarlane, S.D. Sebestyen, K.C. Oleheiser, S. Bosman, A.M. Hopple, M.M. Tfaily, R.K. Kolka, P.J. Hanson, J.E. Kostka, S.D. Bridgham, J.K. Keller, and J.P. Chanton.  2021.  Radiocarbon analyses quantify peat carbon losses with increasing temperature in a whole ecosystem warming experiment.  Journal of Geophysical Research: Biogeosciences 126, e2021JG006511.

Ricciuto, D.M., X. Xu, X. Shi, Y. Wang, X. Song, C.W. Schadt, N.A. Griffiths, J. Mao, J.M. Warren, P.E. Thorton, J. Chanton, J.K. Keller, S.D. Bridgham, J. Gutknecht, S.D. Sebestyen, A. Finzi, R. Kolka, and P.J. Hanson.  2021.  An integrative model for soil biogeochemistry and methane processes: I. Model structure and sensitivity analysis. Journal of Geophysical Research: Biogeosciences 126: e2019G005468.  

Yuan, F., Wang, Y., D.M. Ricciuto, X. Shi, Yuan, F., Hanson, P.J., S. Bridgham, J. Keller, P.E. Thorton, and X. Xu.  2021. An integrative model for soil biogeochemistry and methane processes: II. Warming and elevated CO2 effect on peatland CH4 emissions.  Journal of Geophysical Research: Biogeosciences 126: e2020JG005963.

Wilson, R.M., M.M. Tfaily, C.A. Zalman, M.M. Kolton, E. Johnston, C. Petro, P.J. Hanson, H.M. Heyman, J. Kyle, D.W. Hoyt, E.K. Eder, S.O. Purvine, R.K. Kolka, S.D. Sebestyen, N.A. Griffiths, C.W. Schadt, J.K. Keller, S.D. Bridgham, J.P. Chanton, and J.E. Kostka.  2021.  Soil metabolome response to whole ecosystem warming at the Spruce and Peatland Responses Under Changing Environments experiment.  Proceedings of the National Academy of the United States 118: e2004192118.

Waldrop, M.P, J.W. McFarland, K.L.Manies, M.C. Leewis, S.J. Blazewicz, M.C. Jones, R.B. Neumann, J.K. Keller, L. Cohen, E.S. Euskirchen, C. Edgar, M.R. Turetsky, and W.L. Cable. 2021.  Carbon fluxes and microbial activities from boreal peatlands experiencing permafrost thaw.  Journal of Geophysical Research: Biogeosciences 126: e2020JG005869.

Hanna*, E., J.K. Keller, D. Chang*, W. de Bruyn, and C. Zalman.  2020.  The potential importance of methylated substrates in methane production within three northern Minnesota peatlands.  Soil Biology & Biochemistry 50: 107957. (* = undergradaute collaborator)

Rosenfield*, M., J. Funk, J. Keller, C. Clausen* and K. Cyphers*.  2020.  Leaf traits can be used to predict rates of litter decomposition. Oikos 10: 589-1596. (* = undergraduate collaborator)

Hopple, A.M., R.M. Wilson, M. Kolton, C.A. Zalman, J.P Chanton, J. Kostka, P.J. Hanson, J.K. Keller, and S.D. Bridgham. 2020. Massive peatland carbon banks vulnerable to rising temperatures. Nature Communications 11:1-7. 

Zhuang, Q., S. Wang, B. Zhao, F. Aires, C. Prigent, Z. Yu, J.K. Keller, and S. Bridgham.  2020.  Modeling Holocene peatland carbon accumulation in North America.  Journal of Geophysical Research: Biogeosciences 125: e2019JG005230.