Linda H. Pardo

US Forest Service
Northern Research Station
UVM Aiken Center,
81 Carrigan Dr., Room 204C
Burlington, VT 05405
Telephone: 802-656-1712

Ph.D., Massachusetts Institute of Technology, 1999;
M.S. Syracuse University, Environmental Engineering, 1991;
B.S. Yale University, Mechanical Engineering, 1984.

Professional Positions:
  • Environmental Engineer, USDA Forest Service, Burlington, VT, 1991-present

  • Research Interests and Activities:
    Linda H. Pardo has worked at the Hubbard Brook Experimental Forest since 1989. Her research interests include nutrient cycling, especially nitrogen cycling, and biogeochemistry of light stable isotopes. Current projects include: (1) Relating soil physical properties including particle size distribution to soil functional characteristics (including soil moisture and N cycling) in the context of the hydropedology of W3, (2) Evaluating the factors that control tree species differences in tissue d 15N, (3) Incorporating interactions with climate change into empirical critical loads of N deposition

    Selected Publications:

    2. Halman, J.M., P.G. Schaberg, G.J. Hawley, L.H. Pardo, T.J. Fahey. 2013. Calcium and aluminum impacts on sugar maple physiology in a northern hardwood forest. Tree Physiol 33 (11): 1242-1251. doi: 10.1093/treephys/tpt099
    Clark, C.M., P. Morefield, F.S. Gilliam, L.H. Pardo. 2013 Estimated losses of plant biodiversity across the US from historical N deposition from 1985-2010. Ecology 94(7): 1441-1448.

    Pardo, L.H., P. Semaoune, P.G. Schaberg, C. Eagar, M. Sebilo. 2013. Patterns in �15N in roots, stems, and leaves of sugar maple and American beech seedlings, saplings, and mature trees. Biogeochemistry 112:275-291. doi: 10.1007/s10533-012-9724-1

    N. Duarte, L.H. Pardo, M.J. Robin-Abbott. Susceptibility of Forests in the Northeastern U.S. to Nitrogen and Sulfur Deposition: a critical loads assessment. 2013. Water, Air and Soil Pollution 224:1355. doi 10.1007/s11270-012-1355-6

    Porter, W.M, W.D. Bowman, C.M. Clark, J.E. Compton, L.H. Pardo, J. Soong. 2012. Interactive effects of anthropogenic nitrogen enrichment and climate change on terrestrial and aquatic biodiversity. Biogeochemistry. doi: 10.1007/s10533-012-9803-3

    Pardo, L. H., M.E. Fenn, C.L. Goodale, L.H. Geiser, C.T. Driscoll, E.B. Allen, J.S. Baron, R. Bobbink, W.D. Bowman, C.M. Clark, B. Emmett, F.S. Gilliam, T. Greaver, S.J. Hall, E.A. Lilleskov, L. Liu, J.A. Lynch, K. Nadelhoffer, S.S. Perakis, M.J. Robin-Abbott, J.L. Stoddard, K. Weathers, R.L. Dennis. 2011. Effects of nitrogen deposition and empirical nitrogen critical loads for ecoregions of the United States. Ecological Applications 21:3049-3082.

    Pardo, L.H., M.J. Robin-Abbott, C.T. Driscoll, eds. 2011. Assessment of nitrogen deposition effects and empirical critical loads of nitrogen for ecoregions of the United States. General Technical Report NRS-80 USDA Forest Service, Northern Research Station, Newtown Square, Pennsylvania, USA 291 p.

    Pardo, L.H., Nadelhoffer K.J. 2009. Using nitrogen isotope ratios to assess terrestrial ecosystems at regional and global scale. In: J.B. West et al. (eds) Isoscapes: Understanding movement, pattern, and process on Earth through isotope mapping. Springer Science +Business Media B.V. October 2009, doi 10.1007/978-90-481-3354-3_11, pp. 221-249.

    Burns, D.A., T. Blett, R. Haeuber, L.H. Pardo. 2008. Critical loads as a policy tool for protecting ecosystems from the effects of air pollutants. Frontiers in Ecology 6(3)156-159. doi: 10.1890/070040

    Pardo, L.H., S.G. McNulty, J.L. Boggs, S. Duke. 2007. Regional patterns in foliar 15N across a gradient of nitrogen deposition in the northeastern U.S. Environmental Pollution 149:293-302. doi:10.1016/j.envpol.2007.05.030

    Pardo, L.H., H.F. Hemond, J.P. Montoya, J. Pett-Ridge. 2007. Natural abundance 15N in soil and litter across a nitrate-output gradient in New Hampshire. Forest Ecology and Management 251:217-230. doi:10.1016/j.foreco.2007.06.047

    Pardo, L. H., P.H. Templer, C.L. Goodale, S. Duke, P. Groffman, M.B. Adams, P. Boeckx, J. Boggs, J. Campbell, J. Compton, B. Emmett, P. Gundersen, J. Kj��naas, G. Lovett, M. Mack, A. Magill, M.J. Mitchell, M. Mbila, G. McGee, S. McNulty, K. Nadelhoffer, B. Colman, S. Ollinger, D. Ross, H. Rueth, L. Rustad, P. Schaberg, S. Schiff, P. Schleppi, J. Spoelstra, W. Wessel. 2006. Regional assessment of N saturation using foliar and root ��15N. Biogeochemistry 80:143-171. DOI 10.1007/s10533-006-9015-9

    Pardo, L.H., M. Robin-Abbott, N. Duarte, E.K. Miller. 2005. Tree Chemistry Database (Version 1.0). USDA Forest Service Northeastern Research Station General Technical Report NE-324

    Pardo, L.H., C. Kendall, J. Pett-Ridge, C.C.Y. Chang. 2004. Evaluating the source of streamwater nitrate using ��15N and ��18O in nitrate in two watersheds in New Hampshire, USA. Hydrol. Process. 18:2699-2712

    Pardo, L.H., H.F. Hemond, J.P. Montoya, T.J Fahey, T.G. Siccama. 2002. Response of the natural abundance of 15N in forest soils and foliage to high nitrate loss following clear-cutting. Canadian Journal of Forest Research, 32:1126-1136.

    Pardo, L.H., H.F. Hemond, J.P. Montoya, T.G. Siccama. 2001. Long-term patterns in forest floor nitrogen-15 natural abundance at Hubbard Brook, N.H. Soil Science Society of America Journal, 65:1279-1283.

    Pardo, L. H. 1999. Natural abundance of 15N as a tool for assessing patterns of nitrogen loss from forest ecosystems. Ph.D. Thesis, Massachusetts Institute of Technology. 136 pp.

    Pardo, L. H. and C. T. Driscoll. 1996. Critical loads for nitrogen deposition: case studies at two northern hardwood forests. Water, Air and Soil Pollution 89:105-128.

    Mitchell, M.J., C. T. Driscoll, J. S. Kahl, G. E. Likens, P. S. Murdoch and L.H. Pardo. 1996. Climatic control of nitrate loss from forested watersheds in the northeast United States. Environ. Sci. & Technol. 30:2609-2612.

    Pardo, L.H., C. T. Driscoll and G. E. Likens. 1995. Patterns of nitrate loss from a chronosequence of clear-cut watersheds. Water, Air and Soil Pollution 85:1659-1664.

    Pardo, L.H. and C. T. Driscoll. 1993. A critical review of mass balance methods for calculating critical loads of nitrogen for forested ecosystems. Environ. Rev. 1:145-156.

    Graduate Advisor:
    Charley Driscoll; Harry Hemond

    Role at the Hubbard Brook:
    Archive Committee (chair); Isotope Committee (chair)

    Title at Hubbard Brook:
    Principal Investigator