Christopher Eagar

US Forest Service
271 Mast Road
Durham, NH 03824
Telephone: 603-868-7636
FAX: 603-868-7604

PhD, University of Tennessee, Knoxville, Ecology, 1985
MS, University of Tennessee, Knoxville, Forestry, 1978
BS, University of Tennessee, Knoxville, Business Administration, 1969

Professional Positions:
  • Project Leader (1992 - Present), US Forest Service, Northern Research Station, Durham, NH
  • Adjunct Professor (1995 - Present) Department of Natural Resources, University of New Hampshire, Durham, NH
  • Interim Program Manager, Northern Global Change Research Program (1991), US Forest Service, Northeastern Forest Experiment Station, Radnor, PA
  • Program Manager, Spruce-fir Research Cooperative (1988-1990), US Forest Service, Northeastern Forest Experiment Station, Radnor, PA
  • Ecologist (1983 - 1988), National Park Service, Great Smoky Mountains National Park, Gatlinburg, TN
  • Biological Technician (1981 - 1983), National Park Service, Great Smoky Mountains National Park, Gatlinburg, TN
  • Graduate Research Assistant (1979 - 1982) Graduate Program in Ecology, University of Tennessee, Knoxville, TN

  • Research Interests and Activities:
    The effects of acidic deposition on forests, with a focus on determining how calcium depletion and aluminum mobilization impacts sugar maple; dynamics of southern Appalachian old-growth spruce-fir forest; and synthesis of effects of acidic deposition on forest ecosystems for decision makers. A significant part of my time is devoted to coordination of activities at Hubbard Brook Experimental Forest.

    Selected Publications:

    Huggett, B.A., P.G. Schaberg, G.J. Hawley, and C. Eagar. In Press. Long-term calcium addition increases growth release, wound closure, and health of sugar maple (Acer saccharum) trees at the Hubbard Brook Experimental Forest. Can. J. of For. Res.

    Dasch, A.A, J.D. Blum, C. Eagar, T.J. Fahey, C.T. Driscoll, and T. Siccama. 2006. The relative uptake of Ca and Sr into tree foliage using a whole-watershed calcium addition. Biogeochemistry 80:21-41.

    Groffman, P.M., M.C. Fisk, C.T. Driscoll, G E. Liken, T.J. Fahey, C. Eagar, and L.H. Pardo. 2006. Calcium additions and microbial nitrogen cycle processes in a northern hardwood forest. Ecosystem. 9:1289-1305.

    Juice, S.M., T.J. Fahey, T.G. Siccama, C.T. Driscoll, E.G. Denny, C. Eagar, N.L. Cleavitt, R. Minocha, A.D. Richardson. 2006. Response of Sugar maple to Calcium Addition to Northern Hardwood Forest. Ecology 87:1267-1280.

    Fenn, M.E., T.G. Huntington, S.B. McLaughlin, C. Eagar, A. Gomez, R.B. Cook. 2006. Status of soil acidification in North America. J. of For. Sci. (Czech Republic). 52:3-13.

    Groffman, P.M., C.T. Driscoll, G.E. Likens, T.J. Fahey, R.T. Holmes, C. Eagar, J.D. Aber. 2004. Nor gloom of night: A new conceptual model for the Hubbard Brook Ecosystem Study. BioScience. 54:139-148.

    Fiorentino, I., T.J. Fahey, P.M. Groffman, C.T. Driscoll, C. Eagar and T.G. Siccama. 2003. Initial responses of phosphorus biogeochemistry to calcium addition in a northern hardwood forest ecosystem. Can. J. For. Res. 33:1864-1873

    Campbell, J. L., C. Eagar and W. H. McDowell. 2002. Patterns of streamwater acidity in the Lye Brook Wilderness Area, Vermont, USA. Environmental Management 30:234-248.

    Blum, J. D. A. Klaue, C. A. Nezat, C. T. Driscoll, C. E. Johnson, T. G. Siccama, C. Eagar, T. J. Fahey, G. E. Likens. 2002. Mycorhizal weathering of apatite as an important calcium source in base-poor forest ecosystems. Nature 417:729-731

    Berger, T. W., C. Eagar, G. E. Likens, and G. Stingeder. 2001. Effects of calcium and aluminum chloride additions on foliar and throughfall chemistry in sugar maples. For. Ecol. Mgmt. 149: 75-90.

    Driscoll, C.T., G.B. Lawrence, A.J. Bulger, T. Butler, C.S. Cronan, C. Eagar, K. F. Lambert, G.E. Likens, J.L. Stoddard, K.C. Weathers. 2001. Acidic deposition in the northeastern US: sources and inputs, ecosystem effects, and management strategies. BioScience. 51:180-198.

    Campbell, J. L., C. Eagar, W. H. McDowell, J. W. Hornbeck. 2000. Analysis of nitrogen dynamics in the Lye Brook Wilderness Area, Vermont, USA. Water Air and Soil Pollution. 122:63-75.

    Hornbeck, J.W., C.W. Martin, and C. Eagar. 1997. Summary of water yield experiments at Hubbard Brook Experimental Forest, New Hampshire. Can. J. For. Res. 27:2043-2052.

    Eagar, C. and M. B. Adams. Editors. 1992. The Ecology and Decline of Red Spruce in the Eastern United States. Springer-Verlag, New York. 417 p.

    Co-Authors and Collaborators:
    James Hornbeck, John Campbell, Charles Driscoll, Niki Nicholas, William McDowell, Torsten Burger, Samual (Sandy) McLaughlin, Gregory Lawrence, Gene Likens, John Stoddard, Kathleen Weathers, John Peine, Scott W. Bailey, Lindsey Rustad, Linda Pardo, Paul Schaberg, Gary Hawley, Joel Blum, Amanda Dasch,Timothy Fahey,Tom Siccama, Peter Groffman,

    Graduate Advisor:
    Ronald Hay

    Role at the Hubbard Brook:
    Project Leader for the USFS with responsibility for managing all aspects of Hubbard Brook Experimental Forest. Member of Committee of Scientists, Scientific Coordinating Committee, Information Oversite Committee, Education and Outreach Committee. Chair Research Advisory Committee Advisor and Ex Offico Member: Hubbard Brook Research Foundation

    Title at Hubbard Brook:
    Principal Investigator