Last update: 2013-01-25 21:13:18

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:

    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.

    Fahey, T.J. and J.D. Blum. 2011. Litter layers (Oie) as a calcium source of sugar maple seedlings in a northern hardwood forest. Canadian Journal of Forest Research 41:898-901.

    Fahey, T.J., J.B. Yavitt, R.E. Sherman, P.M. Groffman, M.C. Fisk, and J.C. Maerz. 2011. Transport of carbon and nitrogen between litter and soil organic matter in a northern hardwood forest. Ecosystems 14:326-340 (doi: 10.1007/s10021-011-9414-1)

    Fisk, M.C., T.J. Fahey, J.H. Sobieraj, A.C. Stuniec and T.O. Crist. 2010. Rhizosphere disturbance influences fungal colonization and community development on dead fine roots. Plant and Soil DOI 10.1007/s1 1104-010-0643-4.

    Fisk, M.C., T.J. Fahey, and P. M. Groffman. 2010. Carbon resources, soil organisms, and nitrogen availability: Landscape patterns in a northern hardwood forest. Forest Ecology and Management 260:1175-1183.

    Fuss, C.B., C.T. Driscoll, C.E. Johnson, R. Petras, and T.J. Fahey. 2010. Dynamics of oxidized and reduced iron in a northern hardwood forest. Biogeochemistry doi 10.1007/s10533-010-9490-x

    Groffman, P.M., J.P. Hardy, S. Fashu-Kanu, C.T. Driscoll, N.L. Cleavitt, T.J. Fahey and M.C. Fisk. 2010. Snow depth, soil freezing and nitrogen cycling in a northern hardwood forest landscape. Biogeochemistry: DOI 10.1007/s10533-10010-19436-10533.

    Groffman, P., Hardy, J., Fisk, M., Fahey, T. and Driscoll, C. 2009. Climate variation and soil carbon and nitrogen cycling processes in a northern hardwood forest. Ecosystems 12:927-943.

    Park, B.B., R.D. Yanai, T.J. Fahey, S.W. Bailey, T.G. Siccama, J.B. Shanley, N.L. Cleavitt. 2008. Fine root dynamics and forest production across calcium gradient in northern hardwood and conifer ecosystems. Ecosystems 11:324-341.

    Yanai, R.D., M.C. Fisk, T.J. Fahey, N.L. Cleavitt, B.B. Park. 2008. Identifying roots of northern hardwood species: patterns with diameter and depth. Can. J. For. Res. 38:2862-2869.

    Phillips, R.P. and T.J. Fahey. 2008. The Influence of Soil Fertility on Rhizosphere Effects in Northern Hardwood Forest Soils. Soil Sci. Soc. Am. J. 72(2): 453-461

    Cleavitt, N.L., M. Fairbairn and T.J. Fahey. 2008. Growth and survivorship of American beech (Fagus grandifolia Ehrh.) seedlings in a northern hardwood forest following a mast event. Journal of the Torrey Botanical Society. 135(3): 328-345.

    Cleavitt, N.L., T.J. Fahey, P.M. Groffman, J.P. Hardy, K.S. Henry, and C.T. Driscoll. 2008. Effects of soil freezing on fine roots in a northern hardwood forest. Can. J. For. Res. 38: 82-91.

    Fahey, T.J. and A.K. Knapp (Eds.). 2007. Principles and Standards for Measuring Primary Production. Oxford University Press, Inc., New York.

    Phillips, R.P. and T.J. Fahey. 2007. Fertilization effects on fineroot biomass, rhizosphere microbes and respiratory fluxes in hardwood forest soils. New Phytologist doi: 10.1111/j. 1469-8137.2007.02204.x

    Dittman, J.A., C.T. Driscoll, P. M. Groffman and T. J. Fahey. 2007. Dynamics of nitrogen and dissolved organic carbon at the Hubbard Brook Experimental Forest. Ecology 88:1153-1166.

    Siccama, T.G. T.J. Fahey, C.E. Johnson, T.W. Sherry, E.G. Denny, B. Girdler, G.E. Likens and P.A. Schwarz. 2007. Population and Biomass Dynamics of Trees in a Northern Hardwood Forest at Hubbard Brook. Can. J. For. Res. 37:737-749.

    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