Timothy J Fahey

Cornell University
Department of Natural Resources
Fernow Hall
Ithaca, NY 14853
Telephone: 607-255-5470
FAX: 607-255-0349


PhD, University of Wyoming - Botany - 1979
B.A., Dartmouth College, (cum laude) Biology (1974).

Professional Positions:
  • Professor, Department of Natural Resources, Cornell University (1996-present)
  • Associate Professor, Department of Natural Resources, Cornell University (1988-1996)
  • Assistant Professor, Department of Natural Resources, Cornell University (1982-1988)
  • Assistant Professor, Department of Biology, Fort Lewis College (1981-1982)
  • Temporary Assistant Professor, Department of Botany, University of Wyoming (1980-1981)
  • Research Associate, University of Wyoming (1979-1980)
  • Graduate Research Assistant, University of Wyoming (1974-1979)
  • Graduate Teaching Assistant, University of Wyoming (1976)

  • Research Interests and Activities:
    Research on the structure and function of terrestrial ecosystems; Teaching ecology and environmental conservation; Work with the Hubbard Brook Research Foundation to communicate ecosystem science to policy makers and the public through our Science Links.

    Distinguished Awards and Memberships:
    Liberty Hyde Bailey Professor, 2001; Stephen H. Weiss Presidential Fellow, 2001; SUNY Chancellor's Award for Excellence in Teaching, 1997; NACTA Teaching Award of Merit, 1996; Gamma Sigma Delta Award of Merit for Teaching, 1995; Willard Eggleston Memorial Prize in Botany, Dartmouth College, 1974

    Selected Publications:

    Bae, K., Fahey, T.J., Yanai, R.D., Fisk, M.. 2015. Soil Nitrogen Availability Affects Belowground Carbon Allocation and Soil Respiration in Northern Hardwood Forests of New Hampshire. Ecosystems (June 11) doi:10.1007/s10021-015-9892-7.

    Fahey, T.J., Templer, P.H., Anderson, B.T., Battles, J.J., Campbell, J.L., Driscoll, C.T., Fusco, A.R., et al.. 2015. The Promise and Peril of Intensive-Site-Based Ecological Research: Insights from the Hubbard Brook Ecosystem Study. Ecology 96 (4) (April 1): 885-901 doi:10.1890/14-1043.1

    See, C.R., Yanai, R.D., Fisk, M.C., Vadeboncoeur, M.A., Quintero, B.A., Fahey, T.J.. 2015. Soil Nitrogen Affects Phosphorus Recycling: Foliar Resorption and Plant-soil Feedbacks in a Northern Hardwood Forest. Ecology 96 (9) (April 7): 2488-2498 doi:10.1890/15-0188.1

    Shao, S., Driscoll, C.T., Johnson, C.E., Fahey, T.J., Battles, J.J., Blum, J.D.. 2015. Long-Term Responses in Soil Solution and Stream-Water Chemistry at Hubbard Brook after Experimental Addition of Wollastonite. Environmental Chemistry doi:10.1071/EN15113

    Cleavitt, Natalie L., John J. Battles, Timothy J. Fahey, and Joel D. Blum. 2014. Determinants of Survival over 7 Years for a Natural Cohort of Sugar Maple Seedlings in a Northern Hardwood Forest. Canadian Journal of Forest Research 44 (9) (September 1): 1112-1121 doi:10.1139/cjfr-2014-0177

    Dib, Alain E., Chris E. Johnson, Charles T. Driscoll, Timothy J. Fahey, and Katharine Hayhoe. 2014. Simulating Effects of Changing Climate and CO2 Emissions on Soil Carbon Pools at the Hubbard Brook Experimental Forest. Global Change Biology 20 (5): 1643-1656 doi:10.1111/gcb.12436

    DurĂ¡n, Jorge, Jennifer L. Morse, Peter M. Groffman, John L. Campbell, Lynn M. Christenson, Charles T. Driscoll, Timothy J. Fahey, Melany C. Fisk, Myron J. Mitchell, and Pamela H. Templer. 2014. Winter Climate Change Affects Growing-Season Soil Microbial Biomass and Activity in Northern Hardwood Forests. Global Change Biology 20 (11): 3568-3577 doi:10.1111/gcb.12624

    Halman, Joshua M., Paul G. Schaberg, Gary J. Hawley, Christopher F. Hansen, and Timothy J. Fahey. 2014. Differential Impacts of Calcium and Aluminum Treatments on Sugar Maple and American Beech Growth Dynamics. Canadian Journal of Forest Research: 52-59 doi:10.1139/cjfr-2014-0250

    Johnson, Chris E., Charles T. Driscoll, Joel D. Blum, Timothy J. Fahey, and John J. Battles. 2014. Soil Chemical Dynamics after Calcium Silicate Addition to a Northern Hardwood Forest. Soil Science Society of America Journal 78 (4): 1458 doi:10.2136/sssaj2014.03.0114

    Battles, John J., Timothy J. Fahey, Charles T. Driscoll, Joel D. Blum, and Chris E. Johnson. 2013. Restoring Soil Calcium Reverses Forest Decline. Environmental Science & Technology Letters (September 9) doi:10.1021/ez400033d.

    Green, M. B., A. S. Bailey, S. W. Bailey, J. J. Battles, J. L. Campbell, C. T. Driscoll, T. J. Fahey, et al.. 2013. Decreased Water Flowing from a Forest Amended with Calcium Silicate. Proceedings of the National Academy of Science 110 (15): 5999-6003

    Halman, Joshua M., Paul G. Schaberg, Gary J. Hawley, Linda H. Pardo, and Timothy J. Fahey. 2013. Calcium and Aluminum Impacts on Sugar Maple Physiology in a Northern Hardwood Forest. Tree Physiology 33 (11) (November 1): 1242-1251 doi:10.1093/treephys/tpt099

    Li, A., and T. J. Fahey. 2013. Nitrogen Translocation to Fresh Litter in Northern Hardwood Forest. Ecosystems 16 (3) (April 1): 521-528 doi:10.1007/s10021-012-9627-y

    Rastetter, E. B., R. D. Yanai, R. Q. Thomas, M. A. Vadeboncoeur, T. J. Fahey, M. C. Fisk, B. L. Kwiatkowski, and S. P. Hamburg. 2013. Recovery from Disturbance Requires Resynchronization of Ecosystem Nutrient Cycles. Ecological Applications 23 (3): 621-642 doi:10.1890/12-0751.1

    Cho, Y., C. T. Driscoll, C. E. Johnson, J. D. Blum, and T. J. Fahey. 2012. Watershed-Level Responses to Calcium Silicate Treatment in a Northern Hardwood Forest. Ecosystems 15 (3) (April): 416-434 doi:10.1007/s10021-012-9518-2

    Knapp, A.K, Smith, M.D, Hobbie, S.E., Collins, S.L., Fahey, T.J., Hansen, G.J.A., Landis, D.A., et al.. 2012. Past, Present and Future Roles of Long-term Experiments in the LTER Network. BioScience 62: 377-389

    Raciti, S.M., T.J. Fahey, C.T. Driscoll, F.J. Carranti, D.R. Foster, P.S. Gwyther, B.R. Hall, S.P. Hamburg, J.C. Jenkins, J.P. Jenkins, C. Neill, S.V. Ollinger, B.W. Peery, E. Quigley, R.E. Sherman, R.Q. Thomas, M.A. Vadeboncoeur, D.A. Weinstein, G. Wilson, P.B. Woodbury. 2012. Local-scale Carbon Budgets and Mitigation Opportunities for the Northeastern United States. BioScience 62(1): 23 - 38. doi:10.1525/bio.2012.62.1.7

    Fuss, C. B., C.T. Driscoll, C.E. Johnson, R.J. Petras, and T.J Fahey. 2011. Dynamics of oxidized and reduced iron in a northern hardwood forest. Biogeochemistry 104:103-119

    Cleavitt, N.L., T.J. Fahey and J.J. Battles. 2011. Regeneration ecology of sugar maple (Acer saccharum Marsh.): seedling survival in relation to nutrition, site factors and damage by insects and pathogens. Canadian Journal of Forest Research, 41:235-244.

    Van Doorn, N.S., J.J. Battles, T.J. Fahey, T.G. Siccama and P.A. Schwarz. 2011. Links between biomass and tree demography in a northern hardwood forest: A decade of stability and change in Hubbard Brook Valley, New Hampshire. Can. J. For. Res. 41(7):1369-1379.

    Co-Authors and Collaborators:
    Arthur, M.; Battles, J; Mou Pu; Driscoll, K.; Sayre, R.; Sherman, R.; Simmons, J.; Slothower, R.; Stalter, A.; Tierney, G

    Graduate Students:
    Arthur, M.; Battles, J.; Mou Pu; Postek, K.; Sayre, R.; Schwarz, P.; Schwartzman, T.; Sherman, R.; Simmons, J.; Slothower, R.; Stalter, A.; Tierney, G.

    Graduate Advisor:
    Knight, D.H.

    Role at the Hubbard Brook:
    I am co-Principal Investigator for the program, Long-term Ecological Research at Hubbard Brook Experimental Forest and a member of the Scientific Advisory Committee. My research group is studying soil carbon and fine root dynamics as well as vegetation dynamics at the whole-valley scale.

    Title at Hubbard Brook:
    Principal Investigator