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Mark G. JohnsonResearch Soil Scientist
Voice: 541-754-4696 |
Education:
- B.S., Kansas State University, Manhattan, KS; Agronomy, 1979
- M.S., Kansas State University, Manhattan, KS; Soil Chemistry and Plant Nutrition, 1981
- Ph.D., Cornell University, Ithaca, NY; Soil Chemistry, 1986
Previous Positions:
- 1993-1997: Principal Investigator, ManTech Environmental Services/Dynamac Corp.
- 1988-1993: Project Scientist, NSI Technology Services/ManTech
- 1985-1988: Senior Scientist, NSI Technology Services
Research Interests and Skills:
- Effects of natural and anthropogenic stresses on roots, soil and soil processes
- Biogeochemistry of forested systems
Appointments / Honors:
- Team Honor Award for Advancing Environmental Science, USEPA Western Ecology Division, April, 1999
- Director's Technical Contribution Award, USEPA, Corvallis Environmental Research Laboratory, December 1989
- Technical Achievement Award, USEPA, Corvallis Environmental Research Laboratory, October 1987
- Director's Technical Contribution Award, USEPA, Corvallis Environmental Research Laboratory, July 1987
- Courtesy Faculty Appointment, Assistant Professor of Soil Science, Department of Crop and Soil Science, Oregon State University, Corvallis, OR, 1987-present
- Johnson, M.G., D.T. Tingey, D.L. Phillips, and M.J. Storm. 2001. Advancing fine root research with minirhizotrons. Environ. Exp. Botany 45:263-289.
- Lin, G., P.T. Rygiewicz, J.R. Ehleringer, M.G. Johnson, and D.T. Tingey. 2001. Time-dependent responses of soil CO2 efflux components to elevated atmospheric [CO2 ] and temperature in experimental forest mesocosms. Plant and Soil 229:259-270.
- Phillips, D.L., M.G. Johnson, D.T. Tingey, C. Biggart, R.S. Novak, and J. Newsome. 2000. Minirhizotron installation in sandy, rocky soils with minimal soil disturbance. Soil Sci Soc of Am. J. 64:761-764.
- Tingey, D.T., D.L. Phillips, and M.G. Johnson. 2000. Elevated CO2 and conifer roots: Effects on growth, life span and turnover. New Phytologist 147:87-103.
- Johnson, M.G., D.L. Phillips, D.T. Tingey, and M.J. Storm. 2000. Effects of elevated CO2, N-fertilization and season on survival of ponderosa pine fine roots. Can. J. For. Res. 30(2):220-228.
- Lin, G., J.R. Ehleringer, P.T. Rygiewicz, M.G. Johnson, and D.T. Tingey 1999. Elevated CO2 and temperature impacts on different components of soil CO2 efflux in douglas-fir terracosms. Global Change Biology 5:157-168.
- Johnson, M.G., and P. Meyer. 1998. Mechanical advancing handle that simplifies minirhizotron camera registration and image collection. J. Environ. Qual. 27(3):710-714.
- Johnson, M.G., D.T. Tingey, M.J. Storm, L.M. Ganio, and D.L. Phillips. 1997. Effects of elevated CO2 and N fertilization on the lifespan of Pinus ponderosa fine roots. Pages 370-373 in H.E. Flores, J.P. Lynch, and D. Eissenstat, editors. Radical Biology: Advances and Perspectives on the Function of Plant Roots. Vol. 18 Current Topics in Plant Physiology series. American Society of Plant Physiologists.
- Rygiewicz, P.T., M.G. Johnson, L.M. Ganio, D.T. Tingey, and M.J. Storm. 1997. Lifetime and temporal occurrence of ectomycorrhizae on ponderosa pine (Pinus ponderosa Laws.) seedlings grown under varied atmospheric CO2 and nitrogen levels. Plant and Soil 189:275-287.
- Tingey, D.T., D.L. Phillips, M.G. Johnson, M.J. Storm, and J.T. Ball. 1997. Effects of elevated CO2 and N-fertilization on fine root dynamics and fungal growth in seedling Pinus ponderosa. Environ. Exp. Botany 37:73-83.
- Vose, J.M., K.J. Elliot, D.W. Johnson, D.T. Tingey, and M.G. Johnson. 1997. Soil respiration response to two years of elevated CO2 and N in ponderosa pine (Pinus ponderosa Doug. ex Laws.). Plant and Soil 190:19-28.
- Tingey, D.T., M.G. Johnson, D.L. Phillips, D.W. Johnson, and J.T. Ball. 1996. Effects of elevated CO2 and nitrogen on the synchrony of shoot and root growth in ponderosa pine. Tree Physiology 16:905-914.
- Tingey, D.T., M.G. Johnson, D.L. Phillips, and M.J. Storm. 1996. Effects of elevated CO2 and nitrogen on ponderosa pine fine roots and associated fungal components. Journal of Biogeography 22-281-287.
- Tingey, D.T., B.D. McVeety, R. Washmann, M.G. Johnson, D.L. Phillips, P.T. Rygiewicz, and D.M. Olszyk. 1996. A versatile sun-lit controlled-environment facility for studying plant and soil processes. J. Environ. Qual. 25-614-625.