Chris E. Johnson
Civil & Environmental Engineering
- Ph.D. (Geology), University of Pennsylvania, 1989
- M.A. (Statistics), University of Pennsylvania, 1988
- B.S.E. (Civil and Urban Engineering), University of Pennsylvania, 1983
- Center for Environmental Systems Engineering (CESE)
- Soil chemistry
- Biogeochemical processes in terrestrial ecosystems
- Chemistry of natural organic matter
- Trace metals in the environment
Professor Johnson is involved in a number of research projects in the broad area of environmental chemistry. He has ongoing research interests in the fate of trace metals (Pb, Zn, Cu, Ni) in forest soils and landscapes; the effects of clear-cut logging on soils and drainage waters; and the changing acid-base chemistry of soils historically affected by acid rain. His principal research sites are located in the Catskills and Adirondack regions of New York, as well as the White Mountains of New Hampshire.
Johnson is also actively involved in research on the chemistry of natural organic matter, which plays an important role in soil fertility, trace metal transport, and the acid-base status of soils and natural waters. He is particularly interested in the characterization of organic matter using advanced analytical tools such as nuclear magnetic resonance spectroscopy, liquid chromatography, and capillary electrophoresis. He is an Adjunct Professor at Griffith University in Brisbane, Australia, where he conducts research on soil chemistry in plantation forests in Southeastern Queensland.
- Environmental chemistry and analysis
- Chemistry of Soils and Natural Surfaces
- Environmental Geostatistics
- Water for Gotham
- Aqueducts of Ancient Rome
- Phi Beta Kappa
- Tau Beta Pi
- Fulbright Scholar, Czech Republic, 1994
- Excellence in Graduate Education, Faculty Excellence Award, 2012
Gianfagna, C.C., C.E. Johnson, and D.G. Chandler. [In press]. Watershed area ratio accurately predicts daily streamflow in nested catchments in the Catskills, New York. Journal of Hydrology – Regional Studies.
Balaria, A., C.E. Johnson, P.M. Groffman, and M.C. Fisk. 2015. Effects of calcium treatment on the composition of forest floor organic matter in a northern hardwood stand. Biogeochemistry. 122:313-326.
Ross, D.S., S.W. Bailey, R.D. Briggs, J. Curry, I.J. Fernandez, G. Fredriksen, C.L. Goodale, P.W. Hazlett, P.R. Heine, C.E. Johnson, J.T. Larson, G.B. Lawrence, R.K. Kolka, R. Ouimet, D. Paré, D.D. Richter, C.D. Shirmer, R.A. Warby. 2015. Inter-laboratory variation in the chemical analysis of acidic forest soil reference samples from eastern North America. Ecosphere 6(5): Article 73.
Balaria, A., C.E. Johnson, and P.M. Groffman. 2014. Effects of calcium treatment on forest soil organic matter along an elevation gradient. Canadian Journal of Forest Research. 44:969-976.
Battles, J.J., T.J. Fahey, C.T. Driscoll, J.D. Blum, and C.E. Johnson. 2014. Restoring soil calcium reverses forest decline. Environmental Science and Technology Letters. 1:15-19.
Dib, A.E., C.E. Johnson, C.T. Driscoll, T.J. Fahey, and K. Hayhoe. 2014. Simulating effects of changing climate and CO2 emissions on soil carbon pools at the Hubbard Brook Experimental Forest. Global Change Biology. 20:1645-1656.
Johnson, C.E., C.T. Driscoll, J.D. Blum, T.J. Fahey, and J.J. Battles. 2014. Soil chemical dynamics after calcium silicate addition to a northern hardwood forest. Soil Science Society of America Journal. 78:1458-1468.
Johnson, C.E., T.G. Siccama, E.G. Denny, M.M. Koppers, and D.J. Vogt. 2014. In situ decomposition of northern hardwood boles: Decay rates and nutrient dynamics in wood and bark. Canadian Journal of Forest Research 44:1515-1524.
Yu, X., C.T. Driscoll, R.A.F. Warby, M. Montesdeoca, and C.E. Johnson. 2014. Soil mercury and its response to atmospheric mercury deposition across the northeastern United States. Ecological Applications. 24:812-822.
Balaria, A., and C.E. Johnson. 2013. Compositional characterization of soil organic matter and hot-water extractable organic matter in organic horizons using a molecular mixing model. Journal of Soils and Sediments. 13:1032-1042.
Johnson, C.E. 2013. Chemical properties of upland forest soils in the Catskills region. Annals of the New York Academy of Sciences. 1298:30-42.
Johnson, C.E., T.J. Blumfield, S. Boyd, and Z. Xu. 2013. A 13C NMR study of decomposing logging residues in an Australian hoop pine plantation. Journal of Soils and Sediments. 13:854-862.