Urszula (Choromanska) Norton
Associate Professor of Agroecology
My research lies within the areas of both basic and applied science, concentrating on questions formed to evaluate the impact of anthropogenic or chronic disturbances on ecological underpinnings of ecosystem resiliency and sustainability. As a biogeochemist I am drawn toward understanding the linkages between belowground N and C cycling and ecosystem functions. I am interested in agroecological principles governing sustainable food production in time of diminishing natural resources and environmental change and the short and long-term consequences of climate variability on ecosystems services. In my research approach I investigate a variety of soil, air and plant indices that are most sensitive to environmental change such as greenhouse gas (GHG) emissions (carbon dioxide, methane and nitrous oxide) and labile and stable organic matter pools. Methodologies I often employ include GHG measurements, assays for determining potentially mineralizable C and N, and gross rates of mineralization using 15N enrichment techniques.
2009-present: Associate Professor of Agroecology; Plant Sciences Department, University of Wyoming (hired on August 19th 2009); Adjunct Faculty in Program in Ecology (PiE);
2007-present: Adjunct Assistant Professor, Renewable Resources Department, University of Wyoming, Laramie, WY;
2004-2007: Land, Air and Water Resources Department, University of California Davis, Davis, CA. Research Associate Step IX;
Norton, U., A.R. Mosier, J.A. Morgan, P.D. Stahl, J.D. Derner, and L.I. Ingram. 2008. Moisture pulses, trace gas emissions and soil C and N in cheatgrass and native grass-dominated sagebrush-steppe in Wyoming, USA. Soil Biology & Biochemistry. 40:1421-1431.
Hooker, T.D., J.M. Stark, U. Norton, A.J. Leffler, M. Peek, and R. Ryel. 2008. Distribution of ecosystem C and N within contrasting vegetation types in a semiarid rangeland in the Great Basin, USA. Biogeochemistry 90:291-308.
Norton, J.B., T.A. Monaco and U. Norton. 2007. Mediterranean annual grasses in western North America: Kids in a candy store. Plant and Soil. 298:1-5.
Blumenthal, D, U. Norton, J. D. Derner, and J. D. Reeder. 2006. Long-term effects of tebuthiuron on Bromus tectorum. Western North American Naturalist 66:420-425.
Austin, A.T., L. Yahdijan, J.M. Stark, J. Belnap, A. Porporato, U. Norton, D.A. Ravetta, and S.M. Scheffer. 2004. Water pulses and biogeochemical cycles in arid and semiarid ecosystems. Oecologia 141 (2): 221-235.
Choromanska, U. and T.H. DeLuca. 2002. Microbial activity and nitrogen mineralization in forest mineral soils following heating: evaluation of post-fire effects. Soil Biology and Biochemistry. 34:263-271
Choromanska, U. and T.H. DeLuca. 2001. Prescribed fire alters the impact of wildfire on soil biochemical properties in a ponderosa pine forest. Soil Sci. Soc. Am. J. 65:232-238
Faculty Advisor to Agriculture Community Resources for Everyday Sustainability Student Farm and Student Recognized Organization (ACRES farm);
Miller, Patrick (MS) 2010- UW PSD
Thesis Advisor and Postgraduate-Scholar Sponsor