Research Interests
Understanding carbon dynamics in forest ecosystems continues to be an important objective in the face of a changing climate. I currently work in the Spatial Ecology Lab at the University of Alaska Fairbanks and focus on ascertaining controls on soil carbon accumulation in boreal ecosystems. This project – The Deep Soil Carbon Project - is funded by the USGS and headed by Dave McGuire and Jennifer Harden.
Education
PhD. Earth and Environmental Science, University of Pennsylvania 2008
M.S. Agronomy, Brigham Young University 2004
B.S. Agronomy, Brigham Young University 2002
Research and Teaching Experience
Field Work – Carbon Storage
2007 Biomass measurements, Susua, Puerto Rico
2006 Soil carbon chronosequence sampling, Hopkins Forest, MA
2005 Biomass and soil carbon sampling, Adirondacks State Park, NY
2005 Soil carbon sampling, Luquillo Experimental Forest, Puerto Rico
Field Work - Studies of Ancient Mayan Agriculture and Household Activities
2002-2004 Macabilero and Aguateca Guatemala
2001 Motul de San Jose, Guatemala and Chunchucmil, Mexico
Teaching
2007-2008 Class Lectures: Earth and Life Through Time, Natural Disasters and
Human Disturbances
2004-2006 Teaching Assistant: Earth and Life Through Time, Natural Disasters and Human Disturbances
2002-2006 Labs taught: Earth and Life Through Time, Intro to Soils, Soil Taxonomy, Soil Microbiology, Soil Physics
BYU Soils Laboratory
2001-2004 Sample preparation and analyses of macronutrients and heavy metals
Publications
To be submitted
- Johnson, K.D., Scatena, F.N., Pan, Y., Johnson, A.H. Applying ecosystem models as tools for estimating soil carbon and total forest carbon changes in a northern hardwood forest. To be submitted to Forest Ecology and Management.
- Johnson, K.D., Scatena, F.N. Spatial patterns and dynamics of soil organic carbon storage in a humid tropical steepland. To be submitted to Catena
Published
- Johnson, K.D., Scatena, F.N., Johnson, A.H., Pan, Y. Controls on Soil Organic Matter Content in a Northern Hardwood Forest. Geoderma. In press. pdf
- Johnson, K.D., Terry, R.E., Jackson, M.W., Golden, C. 2007. Ancient Soil Resources of the Usumacinta River Region, Guatemala. Journal of Archaeological Science. 34:1117-1129. pdf
- Jensen, C.T., Moriarty, M.D., Johnson, K.D., Terry, R.E., Emery, K.F., Nelson, S.N. 2007. Soil Resources of the Motul De San Jose Maya: Correlating Soil Taxonomy and Modern Itza Maya Soil Classification Within a Classic Maya Archaeological Zone. Geoarchaeology. 22 (3):337-357. pdf
- Johnson, K.D., Wright, D.R., Terry, R.E. 2007. Application of Carbon Isotope Analysis to Ancient Maize Agriculture in the Petexbatun Region, Guatemala. Geoarchaeology. 22 (3):313-336.pdf
- Fernandez, F., Johnson, K.D., Terry, R.E., Nelson, S., Webster, D. 2005. Soil Resources of the Ancient Maya at Piedras Negras, Guatemala. Soil Science Society of America Journal. 69:2020-2032.
- Golden, C., Munoz, A.R., Johnson, K., Roman, E., Sherer, A., Zamora, M., Scatena, F.N. 2004. Of Floods and Frontiers: Recent Research in the Sierra del Lacandon of Guatemala. Mexicon.
- Johnson K.D., Wright, D.R., Terry, R.E. 2004. Aplicacion del Analisis de los Isotopos de Carbono en el Cultivo de los Antiguos Mayas en la region de Guatemala, verano 2002. In Informe Del Proyecto Arqueologico Aguateca: La Temporada De 2002. Eds. Takeshi Inomata, Daniela Triadan and Erick Ponciano. Guatemala.
Presentations and Posters
- 2007 “Twentieth Century Changes of Forest Carbon Pools of a Northern
Hardwood Forest with Emphasis on Soil Organic Carbon Pools”. Poster presented at the American Geophysical Union Meetings. San
Francisco, CA.
- 2007 “Modeling Soil Organic Matter Distribution in a Northern Hardwood Forest and Tropical Watershed”. Invited poster presented at the North American Carbon Program Meetings. Colorado Springs, CO.
- 2006 “Modeling the Spatial Variability of Soil Organic Matter in a Deeply Dissected Forested Landscape – Bisley Watershed, Puerto Rico”. Poster presented at World Congress of Soil Science. Philadelphia, PA.
- 2005 “Modeling 33 Years of Soil Organic Matter Change in a Northern Hardwood Forest with Regression and Process-based Models”. Poster presented at Soil Science Society of America Annual Meetings. Salt Lake City, UT.
- 2003 "Application of Carbon Isotope Analysis to Ancient Maize Agriculture in the Peten Region of Guatemala”. Oral paper presented at Society of American Archaeologists Annual Meeting. Miwaukee, WI.
- 2002 “Stable Carbon Isotope Analysis of Ancient Agricultural Soils of the Usumacinta Basin, Guatemala. Poster presented at Soil Science Society of America Annual Meetings. Indianapolis, IN.
- 2001 “Soil Chemical Signatures and Classic Maya Land Use at Motul de San Jose, Guatemala. Poster presented at Soil Science Society of America Annual Meetings. Charlotte, NC.
Membership in Professional Societies
ASA-CSSA-SSSA
American Geophysical Union (AGU)
Geological Society of America (GSA)
Back to top |
