Institution: USDA Forest Service
Department: Northern Research Station, Northern Forest Science and Applications
UVM Aiken Center, 81 Carrigan Dr., Room 204C
Burlington, VT 05405
Hubbard Brook Role: Investigator
Phone: (802) 656-1712
Email: linda.pardo@usda.gov
ORCID: 0000-0001-5590-2683

Research Interests

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

Hubbard Brook Publications by this Author

Green, M. B., Pardo, L. H., Campbell, J. L., Rosi, E., Bernhardt, E. S., Driscoll, C. T., Fahey, T. J., LoRusso, N., Matthes, J., & Templer, P. H. (2023). Combination of factors rather than single disturbance drives perturbation of the nitrogen cycle in a temperate forest. Biogeochemistry. https://doi.org/10.1007/s10533-023-01105-z
Pardo, L. H., Green, M. B., Bailey, S. W., McGuire, K. J., & McDowell, W. H. (2022). Identifying Controls on Nitrate Sources and Flowpaths in a Forested Catchment Using a Hydropedological Framework. Journal of Geophysical Research: Biogeosciences, 127(2), e2020JG006140. https://doi.org/10.1029/2020JG006140
Green, M. B., Pardo, L. H., Bailey, S. W., Campbell, J. L., McDowell, W. H., Bernhardt, E. S., & Rosi, E. J. (2021). Predicting high-frequency variation in stream solute concentrations with water quality sensors and machine learning. Hydrological Processes, 35(1), e14000. https://doi.org/https://doi.org/10.1002/hyp.14000
Clair, T., Blett, T., Aherne, J., Aidar, M., Artz, R., Bealey, W., Budd, W., Cape, N., Curtis, C., Duan, L., Fenn, M., Groffman, P., Haeuber, R., Hall, J., Hettelingh, J.-P., López-Hernández, D., Mathieson, S., Pardo, L., Posch, M., … Hinsberg, A. (2014). The critical loads and levels approach for nitrogen. In Nitrogen Deposition, Critical Loads and Biodiversity (pp. 481–491). Springer Netherlands.
Halman, J. M., Schaberg, P. G., Hawley, G. J., Pardo, L. H., & Fahey, T. J. (2013). Calcium and aluminum impacts on sugar maple physiology in a northern hardwood forest. Tree Physiology, 33(11), 1242–1251. https://doi.org/10.1093/treephys/tpt099
Pardo, L. H., Semaoune, P., Schaberg, P. G., Eagar, C., & Sebilo, M. (2013). Patterns in δ15N in roots, stems, and leaves of sugar maple and American beech seedlings, saplings, and mature trees. Biogeochemistry, 112, 275–291. http://www.treesearch.fs.fed.us/pubs/43081
Groffman, P. M., Rustad, L. E., Templer, P. H., Campbell, J. L., Christenson, L. M., Lany, N. K., Socci, A. M., Vadeboncoeur, M. A., Schaberg, P. G., Wilson, G. F., Driscoll, C. T., Fahey, T. J., Fisk, M. C., Goodale, C. L., Green, M. B., Hamburg, S. P., Johnson, C. E., Mitchell, M. J., Morse, J. L., … Rodenhouse, N. L. (2012). Long-Term Integrated Studies Show Complex and Surprising Effects of Climate Change in the Northern Hardwood Forest. BioScience, 62(12), 1056–1066. https://doi.org/10.1525/bio.2012.62.12.7
Pardo, L. H., Fenn, M. E., Goodale, C. L., Geiser, L. H., Driscoll, C. T., Allen, E. B., Baron, J. S., Bobbink, R., Bowman, W. D., Clark, C. M., Emmett, B., Gilliam, F. S., Greaver, T. L., Hall, S. J., Lilleskov, E. A., Liu, L. L., Lynch, J. A., Nadelhoffer, K. J., Perakis, S. S., … Dennis, R. L. (2011). Effects of nitrogen deposition and empirical nitrogen critical loads for ecoregions of the United States. Ecological Applications, 21(8), 3049–3082. ://WOS:000299166300016
Fenn, M. E., Lambert, K. F., Blett, T. F., Burns, D. A., Pardo, L. H., Lovett, G. M., Haeuber, R. A., Evers, D. C., Driscoll, C. T., & Jeffries, D. S. (2011). Setting limits: Using air pollution thresholds to protect and restore U.S. ecosystems. Issues in Ecology #14. Ecological Society of America, Washington, D.C.
Groffman, P. M., Fisk, M. C., Driscoll, C. T., Likens, G. E., Fahey, T. J., Eagar, C., & Pardo, L. H. (2006). Calcium additions and microbial nitrogen cycle processes in a northern hardwood forest. Ecosystems, 9, 1289–1305.
Groffman, P. M., Driscoll, C. T., Eager, C., Fisk, M. C., Fahey, T. J., Holmes, R. T., Likens, G. E., & Pardo, L. (2004). A new governance structure for the Hubbard Brook Ecosystem Study. Bull. Ecol. Soc. Amer., 85(1), 6-May.
Pardo, L. H., Hemond, H. F., Montoya, J. P., Fahey, T. J., & Siccama, T. G. (2002). Response of the natural abundance of 15N in forest soils and foliage to high nitrate loss following clear-cutting. Can. J. For. Res., 32, 1126–1136.
Pardo, L. H., Kendall, C., & Hemond, H. F. (2001). Using 15N and 18O in nitrate to determine the source of streamwater nitrate in two NH watersheds. Eos, 82, S141.
Pardo, L. H., Hemond, H. F., Montoya, J. P., & Siccama, T. G. (2001). Long-term patterns in forest-floor nitrogen-15 natural abundance at Hubbard Brook, NH. Soil Science Soc. Amer. J., 65(4), 1279–1283.
Pardo, L. H. (1999). Natural abundance of 15N as a tool for assessing patterns of nitrogen loss from forest ecosystems (HBR.99-79) [PhD Thesis]. Massachusetts Institute of Technology.
Pett-Ridge, J., & Pardo, L. H. (1997). Species differences in natural abundance of 15 N in leaf litter at three New Hampshire forests. Suppl. Bull. Ecol. Soc. Amer., 78(4), 296.
Pardo, L. H. (1997). Natural abundance of 15 N in soil and litter across a nitrate-output gradient in New Hampshire. Suppl. Bull. Ecol. Soc. Amer., 78(4), 158.
Mitchell, M. J., Driscoll, C. T., Kahl, J. S., Likens, G. E., Murdoch, P. S., & Pardo, L. H. (1996). Climatic control of nitrate loss from forested watersheds in the Northeast United States. Environ. Sci. Technol., 30(8), 2609–2612.
Pardo, L. H., & Driscoll, C. T. (1996). Critical loads for nitrogen deposition: case studies of two northern hardwood forests. Water, Air, and Soil Pollution, 89, 105–128.
Pardo, L. H. (1996). Response of natural abundance of 15 N in forest soils to high nitrate losses following clearcutting. Suppl. Bull. Ecol. Soc. Amer., 77(3), 340.
Pardo, L. H., Driscoll, C. T., & Likens, G. E. (1995). Patterns of nitrate loss from a chronosequence of clear-cut watersheds. Water, Air, and Soil Pollution, 85, 1659–1664.
Pardo, L. H., & Hornbeck, J. W. (1995). Natural abundance of 15 N as a tool for assessing nitrogen loss patterns from forest soils. Suppl. Bull. Ecol. Soc. Amer., 76(2), 205.
Pardo, L. H., Murdoch, P. E., Mitchell, M. J., Driscoll, C. T., & Likens, G. E. (1994). Growing season loss of nitrate at three northeastern hardwood forests: a regional indicator of nitrogen saturation? Bull. Ecol. Soc. Amer., 75(2), 173.
Pardo, L. H., & Driscoll, C. T. (1993). A critical review of methods for calculating critical loads of nitrogen for forest ecosystems. Environ. Reviews, 1, 145–156.
Pardo, L. H., Li, C. Y., Bormann, B. T., Bormann, F. H., Bowden, W. B., Pierce, R. S., Snyder, M. C., & Wang, D. (1992). Associative nitrogen fixation in two experimental Pinus ecosystems. Bull. Ecol. Soc. Amer., 73(2), 295.
Pardo, L. H., & Driscoll, C. T. (1991). Critical loads for nitrogen deposition to forest ecosystems: a comparison of calculation methods. Bull. Ecol. Soc. Amer., 72(2), 213.
Pardo, L. H. (1991). Nitrogen cycling and nitrogen saturation in two northern hardwood forest ecosystems (HBR.91-57) [MS Thesis]. Syracuse University.
Pardo, L. H., Driscoll, C. T., Siccama, T. G., & Zhang, Y. (1990). Trends in wood tissue nitrogen concentration in a northern hardwood ecosystem. Bull. Ecol. Soc. Amer., 71(2), 277–278.