Dr. Urszula Norton

Professor of Agroecology and Agroecosystem Biogeochemistry

Department of Plant Sciences

Contact Information

(307) 766-5196unorton@uwyo.edu

Agriculture Building, Room 4014

Smiling woman wearing black shirt with scarf

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.

 

Projects:

  • Quantifying the impact of a massive bark beetle outbreak on carbon, water and nutrient cycling and regeneration of southern Wyoming lodgepole pine forests
  • Development and transfer of Conservation Agriculture Production Systems (CAPS) for small-holder farms in eastern Uganda and western Kenya
  • Effects of cropping-system, irrigation method, and soil properties on soil nitrogen and organic matter dynamics in the Big Horn Basin
  • Economic and environmental sustainability of conventional, reduced-input, and organic approaches on western crop-range-livestock farms

 

Professional Preparation:

  • Warsaw Agricultural University Warsaw, Poland: Horticulture, Bachelor of Science 1988
  • Warsaw Agricultural University Warsaw, Poland: Horticulture (Ornamental Plants Production) M.S. 1990
  • Iowa State University, Ames, IA: Agronomy (Sustainable Agriculture, Crop and Soil Management) M.S. 1995
  • The University of Montana, Missoula, MT: Forestry (Resource Conservation and Forest Soils) Ph.D. 2000
  • Utah State University, Logan, UT: Soil Biochemistry and 15N methodology Post-doc June 2000-December 2002
  • ARS High Plains Grassland Research Station, Cheyenne, WY: Trace gas emissions Post-doc May 2003-May 2004

 

Appointments:

  • 2022-present; Professor of Agroecology and Biogeochemistry; Plant Sciences Department, University of Wyoming
  • 2016-present: Faculty Adjunct, Department of Plant, Soil and Climate, Utah State University
  • 2016-present: Faculty Fellow University of Wyoming Summer High School Institute
  • 2015-present: Associate Professor of Agroecology and Biogeochemistry; Plant Sciences Department, University of Wyoming
  • 2009-present: Faculty Adjunct, Program in Ecology, University of Wyoming
  • 2009-2015: Assistant Professor of Agroecology and Biogeochemistry; Plant Sciences Department, University of Wyoming
  • 2007-2009: Faculty Adjunct, Renewable Resources Department, University of Wyoming
  • 2004-2007: Research Associate, Land, Air and Water Resources Department, University of California Davis, Davis, CA
  • 2003-2004: Post-doctoral Research Scientist, High Plains Grassland Research Station, USDA ARS, Cheyenne, WY/Ft. Collins, CO
  • 2000-2003: NSF Post-doctoral Research Scientist, Department of Biology and the Ecology Center, Stable Isotope Analysis Lab, Utah State University
  • 1995-2000: Research and Teaching Assistant, and Forest Soils Lab Manager School of Forestry, the University of Montana
  • 1992-1995: Research Assistant, Department of Agronomy, Iowa State University, USAID/EPA and the Institute of Land Reclamation and Grassland Research, Falenty, Poland
  • 1991-1992: Program Assistant, USDA ARS and USAID in collaboration with Polish Department of Agriculture, Warsaw, Poland

 

Awards:

2024:  Fulbright Scholar for AY 2024-2025 in Poland
2019:  University of Wyoming (UW) College of Agriculture and Natural Resources Outstanding Educator Award
2016:  Center for Global Studies and School of Energy Resources Nielson Research Excellence Award 
2012:  Second Place Best Graduate Student Poster Presentation (co-author): Western Region Crop Science Society of America-Soil Science Society of America (CSSA-SSSA) annual meetings
2011:  UW College of Agriculture and Natural Resources Outstanding Adviser Award 
2007:  Best Paper Award (co-author): Agronomy Society of America (ASA)-CSSA-SSSA meetings, Division S-7
2006:  Best Paper Award (first author/presenter): ASA-CSA-SSSA meetings, Division S-7
2005:  Best Paper Award (co-author): ASA-CSSA-SSSA meetings, Division S-7
1997:  Bertha Morton scholarship, University of Montana
1997:  Soroptimist Club of Missoula scholarship, University of Montana 
1996:  Bertha Morton scholarship, University of Montana
1996:  George Bright scholarship, University of Montana
1987-1990:  Warsaw Agricultural University scholarship awards to study and conduct research in the Netherlands, Hungary, Italy and Norway

 

Nominations:

2014:  Wyoming Agricultural Experiment Station Early Research Career Award

2014:  UW Woman of Distinction Award

2011:  UW College of Agriculture and Natural Resources Outstanding Teaching Award

 

Current MS Students:

  1. Katie Bell, MS in Plant Sciences: Dryland kernza as a perennial grain alternative to winter wheat in Wyoming.

 

Graduated Students:

  1. Babita Lamichhane, MS, Plant Sciences (2026): “Controlled environment growing conditions effects on antioxidant and nutritional content of barley and wheat fodder production”.
  2. Daniel Adamson, PhD in Soil Science, Ecosystem Sciences and Management (2024): “Nitrogen limitation in high-elevation hay meadows: understanding processes that inform improved agroecosystem health, function and management”. (co-advised with Linda van Diepen). Current Position: Assistant Professor of Soil Science, Oklahoma State University.
  3. Hannah Rogers, PhD in Soil Science, Ecosystem Sciences and Management (2024): “Kernza in Wyoming: evaluating perennial grains to revitalize Wyoming dryland agriculture” (co-advised with Linda van Diepen). Current Position: Senior Research Scientist, Department of Agricultural and Applied Economics, University of Wyoming.
  4. Chandan Shilpakar, PhD, Plant Sciences (2024): ”Regenerative farming practices for improved species diversity, forage productivity and carbon sequestration”. Current Position: Assistant Professor of Forage Sciences, University of Missouri.
  5. Rhett Greenwald, MS, Plant Sciences (2024): “Growing hops (Humulus lupulus, L.) for wet hops brewing at high elevation and short growing season environments”. QuickStart Program. Current Position: PhD Student in Department of Plant Sciences, University of Wyoming.
  6. Megha Singh, MS in Soil Science, Ecosystem Sciences and Management (2024): “Soil health indicators of high-elevation flood-irrigated meadows across Wyoming and Colorado, USA” (co-advised with Linda van Diepen). Current Position: PhD Student in Soil Ecology, University of South Carolina.
  7. Tina Helseth, PhD, Plant Sciences (2023): “Multi-State Evaluation of the Long-Term Compost and Cover Crop Legacies in Dryland Organic Winter Wheat (Triticum aestivum, L.) Production”. Current Position: Senior Research Scientist at Northwest Research and Outreach Center, University of Minnesota.
  8. Iliak, Harmsen Saa, MS, Plant Sciences (2023): ”Winter Wheat (Triticum aestivum, L.) Production under Dryland Conditions in Southeastern Wyoming”. Current Position: PhD student in Agronomy, Utah State University.
  9. Chloe Mattilio, PhD, Program in Ecology and Plant Sciences: “Application of Remote Sensing and Spatial Decision Making for Mapping and Management Prioritization of Invasive Plants in the Intermountain West”. Current Position: in Plant Sciences Department, Sheridan Research and Extension Center, University of Wyoming, Sheridan, WY.
  10. Elizabeth Moore, PhD, Plant Sciences (2022): “Cover Crops in High Altitude/Low Moisture Agriculture”. Current Position: Horticulture Lecturer in Plant Sciences Department, University of Wyoming, Laramie, WY.
  11. Tara Geiger, MS, Plant Sciences (2021): “Heavy Metals in Local Calcareous Soils and the Effects of Organic Amendments and Inorganic Fertilizer on Lead Solubility and Plant Bioavailability”. Current Position: Food Security and Resilience Program Manager and Big Hearts Hospice Care, Washington DC.
  12. Liana Boggs-Lynch, PhD, Program in Ecology and Plant Sciences (lead co-adviser with Linda van Diepen) (2021): “Regenerating Trees and Their Associations with Soil Microorganisms Ten Years after Bark Beetle Infestation”. Current Position: Senior Lecturer, University of Wyoming.
  13. Tina Helseth, MS, Plant Sciences (2020): “Improving Dryland Organic Winter Wheat (Triticum aestivum, L.) by the Inclusion of Composted Manure and Cover Crops in the Fallow”.
  14. Amberle Filley, MS, Plant Sciences (co-adviser with Carrie Eberle) (2019): “Introduction of Pulse Crops into the Wheat-Fallow System in Southeastern Wyoming”. Current Position: United States Forest Service Research Technician.
  15. Mavis Badu Brempong, PhD, Plant Sciences (2018): "Carry-over effects of composted manure and cover crops on greenhouse gas fluxes, soil nitrogen, carbon and crop performance in organic winter wheat (Triticum aestivum, L.) in Eastern Wyoming". Current Position: Senior Research Scientist; Resource and Crop Management Division, CSIR-Crop Research Institute, Fumesa-Kumasi, Ghana.
  16. Prakriti Bista Ghimire, PhD, Plant Sciences (2014): “Effects of Management Practices on Greenhouse Gas Fluxes, Soil Organic Matter Dynamics and Crop Performance in Dryland Winter Wheat Production in Wyoming”. Current Position: Assistant Professor, New Mexico State University.
  17. Budjidmaa Borkhuu, PhD, Botany (co-adviser with Elise Pendall) (2014): “Aboveground and Belowground Carbon Cycle Responses to Bark Beetle Infestation in a Lodgepole Pine Forest”. Current Position: Senior Lecturer at the Mongolia International University.
  18. Judith Ochieng Odhiambo, PhD, Plant Sciences (2014): “Conservation Agriculture Practices in Rain-fed Smallholder Farming Systems of Western Kenya and Western Nebraska: Soil Nutrient Cycling, Greenhouse Gas Fluxes and Crop Productivity”. Current Position: Senior Lecturer and Head of the Department of Crop and Soil Sciences, Kisi University, Kisi, Kenya.
  19. Brekke Peterson Munks, PhD, Plant Sciences (2014): ”Nitrogen and Carbon Transformations in Alfalfa/Grass Hay Production in the Central High Plains: Coupling of Soil-Plant-Atmosphere Exchanges”. Current Position: Northern Great Plains Ecosystem Modeling Scientist for Grassroots Carbon, Sheridan, WY.

 

Post-Doctoral Researchers:

  1. Lisa Ashton-Philander, PhD (2013-2014): “Local Community Gardens as a source of healthy food and mental wellbeing”. Current Position: Deputy Executive Director of the United States Botanical Garden in Washington DC.

 

Publications (*denotes UN as a corresponding author):

  1. Singh, M., U. Norton, J. Norton, D. Adamson, L.T.A. van Diepen. 2026. Fertilization effects in Flood-Irrigated Mountain Hay Meadows across Wyoming and Colorado, USA. Rangeland Ecology and Management, Submitted. In Review.
  2. Badu Brempong, M., U. Norton, R. Asei. 2026. Long-term model simulation of yield and greenhouse gas emissions: sustaining dryland winter wheat systems with one-time composted cattle manure application and annual cover cropping. International Journal of Plant Production. https://link.springer.com/article/10.1007/s42106-026-00439-6
  3. Adamson, D.M., U. Norton, J. Norton, L. van Diepen. 2026. Effects of Long-Term Flood Irrigation on Greenhouse Gas Emissions and Soil Nitrogen in Mountain High Meadows. Soil Science Society of America Journal. Vol 90. https://ui.adsabs.harvard.edu/link_gateway/2026SSASJ..9070189A/doi:10.1002/saj2.70189
  4. Rodgers, H.R., U. Norton, J.B. Norton, L.T.A van Diepen. 2026. Kernza in Wyoming: Perennial Grains for Vulnerable Lands Agronomy2026, 16(6), 624;  https://doi.org/10.3390/agronomy16060624
  5. Emmanuel C. Omondi, Atanu Mukherjee, Jay B. Norton, Dennis S. Ashilenje, Urszula Norton, John Beeby, Walter O. Chiwo. 2025. Comparisons of soil health properties among three long-term land-use systems in Trans Nzoia, Kenya
  6. Adamson, D.M.* U. Norton, J. Norton, S. Albeke, B. Sebade, L. van Diepen. 2025. Soil Carbon and nitrogen responses to long-term flood irrigation and fertilization in high elevation hay meadows. Range Ecology and Management. 98:283-292;
  7. Helseth, C.*, J. Norton, U. Norton. 2025. Effects of composted cattle manure and cover crops on winter wheat performance and soil fertility. Soil Science Society of America Journal. https://doi.org/10.1002/saj2.70040
  8. Shilpakar, C.*, D. Yang, U. Norton, D. Holbrook, A. Islam. 2025. Impact of grazing and environment on soil carbon in reclaimed uranium mine: a region-specific study in Wyoming. Land Degradation and Environment. DOI:10.1002/ldr.5647
  9. Moore, E.A.*, U. Norton. 2024. Improving Semi-Arid Agroecosystem Services with Cover Crop Mixes. PLoS ONE. https://doi.org/10.1371/journal.pone.0306567
  10. Rogers, H.*, J. Norton (postmortem), U. Norton and L. van Diepen. 2024. Sustaining Vulnerable Agroecosystems: Compost Provides Lasting Benefits to Soil Health and Carbon Storage in Semiarid Winter Wheat (Triticum aestivum, L.). Journal of Applied Ecology, 204 (2024)105716.
  11. Mattilio, C.M.*, D.R. Tekiela, U. Norton. 2023. Remote mapping of leafy spurge (Euphorbia esula, L.) in Northwestern Colorado. Frontiers in Remote Sensing.4:1086083
  12. Brempong, M.*, U. Norton, and J.B. Norton. 2022. Winter Wheat Performance Following One-time High Rates of Compost and Annual Cover Crop Planting in Wheat-Fallow Rotations. International Journal of Plant and Soil Science. 34(21) 155-170.
  13. Morris, K.A, P. Saetre, U. Norton, J.M. Stark. 2022. Soil Moisture and Plant Community Effects on Nitrogen Cycling in a Semi-Arid Ecosystem. Biogeochemistry, 159 (1)
  14. Boggs, L.*, U. Norton, L.T.A. van Diepen. 2021. Legacy of bark beetles (Dendroctonus spp.) on soil carbon and nitrogen cycling seven years after forest infestation. Forest Ecology and Management, Volume 489, 119064. https://doi.org/10.1016/j.foreco.2021.119064
  15. Geiger, T.* and U. Norton. 2021. Effects of Garden Amendments on Soil Available Lead and Plant Uptake in a Contaminated Calcareous Soil. Applied Science 11, 5777. https://doi.org/10.3390/app11135777
  16. Brempong, M.*, U. Norton, J. Norton. 2019. Seasonal Carbon Mineralization and Greenhouse Gas Fluxes from Semi-Arid Soils Amended with Compost. International Journal of Recycling of Organic Waste in Agriculture: 367–376. https://doi.org/10.1007/s40093-019-00309-4
  17. Zheljazkov, V., T. Astatkie, U. Norton, E. Jeliazkova. 2019. Gypsum and Coal-bed Methane Water Modify Growth Media Properties, Nutrient Uptake, and Essential Oil Profile of Lemongrass and Palmarosa. Agronomy. Volume 9(6), 282. https://www.mdpi.com/2073-4395/9/6/282/htm
  18. Rony, A.H., L. Kong, W. Lu, M. Dejam, H. Adidharma, K. Gasem, Y. Zheng, U. Norton, M. Fan. 2019. Kinetics, thermodynamics, and physical characterization of corn stover (Zea mays) for solar biomass pyrolysis. Bioresource Technology, 284: 466-473. https://pubmed.ncbi.nlm.nih.gov/30986754/
  19. Saxe, J.P, J.H. Boman IV, M. Bondi, U. Norton, T.K. Righetti, A.H. Rony, B. Sajjadi. 2019. Just or bust? Energy Justice and the impacts of solar pyrolysis biochar production facilities. Energy Research and Social Science 58: 101259. https://www.sciencedirect.com/science/article/abs/pii/S2214629618309605
  20. Sapkota, R., P.D. Stahl, U. Norton. 2018. Anthropogenic Disturbances Shift Diameter Distributions of Woody Plant Species in Shorea Robusta Gaertn. (Sal) Mixed Forests of Nepal. Journal of Asia-Pacific Biodiversity. 90. https://www.sciencedirect.com/science/article/pii/S2287884X18301298?via%3Dihub
  21. Ghimire, R, J.B. Norton, U. Norton. 2018. Soil matter dynamics under irrigated perennial forage-annual crop rotations. Grass and Forage Science; 1-11. https://onlinelibrary.wiley.com/doi/abs/10.1111/gfs.12378
  22. Bista, P.*, U. Norton, R. Ghimire, J. Norton. 2017. Greenhouse gas fluxes, soil mineral N and Global Warming Potential in Semi-Arid Winter Wheat (Triticum aestivum, L.) Fallow during Drought. Journal of Arid Environments 147: 103-113. https://doi.org/10.1016/j.jaridenv.2017.09.002
  23. Ghimire, R., U. Norton, P. Bista*, J. Norton. 2017. Soil organic matter, greenhouse gases and net global warming potential of irrigated conventional, reduced-tillage and organic cropping systems. Nutrient Cycling in Agroecosystems 107: 49-62. https://link.springer.com/article/10.1007/s10705-016-9811-0
  24. Hurisso, T.T., U. Norton, J.B. Norton, J. Odhiambo*, S.J. Del Grosso, G.W. Hergert, D.J. Lyon. 2016. Dryland Soil Greenhouse Gases and Yield-scaled Emissions in No-Till and Organic Winter Wheat-Fallow Systems. Soil Science Society of America Journal. 80: 178-192 
  25. Norton, U., B. Ewers, B. Borkhuu*, N. Brown*, E. Pendall. 2015. Soil nitrogen five years after bark beetle infestation in lodgepole pine forests. Soil Science Society of America Journal. doi:10.2136/sssaj2014.05.0223
  26. Hurisso, T.T., J.B. Norton, E.J. Mukhwana, U. Norton. 2015. Soil organic carbon and nitrogen fractions and sugarbeet sucrose yield in furrow-irrigated agroecosystems. Soil Science Society of America Journal. doi:10.2136/sssaj2015.02.0073
  27. Borkhuu, B.*, S. Peckham, B. Ewers, U. Norton, E. Pendall. 2015. Does soil respiration decline following beetle-induced forest mortality in a lodgepole pine forest? Agricultural and Forest Meteorology 214-215: 201-207. https://www.sciencedirect.com/science/article/pii/S0168192315006930?casa_token=X1BaC1333AIAAAAA:gWX1MUSImOYclsP8ZtKnouXlmpmIFQM7Gr3O7kviC_X284W98aCIXPg29wJ5Sl_J35fVGas
  28. Odhiambo, J.*, U. Norton, D. Ashilenje, E. Omondi, J.B. Norton. 2015. Weed dynamics during transition from conventionally tilled maize/bean intercropping to conservation agriculture practices in western Kenya. PLOS ONE doi:10.1371/journal.pone.0133976
  29. Kaur, G.A. Garcia y Garcia, U. Norton, T. Persson, T. Kelleners. 2015. Effects of cropping practices on water-use and water productivity of dryland winter wheat in the high plains ecoregion of Wyoming. Journal of Crop Improvement 29(5): 491-517. 
  30. Bista P.*, U. Norton, R. Ghimire, J. Norton. 2015. Greenhouse gas fluxes and soil carbon and nitrogen following single summer tillage event. International Journal of Plant and Soil Science, 6(4): 183-193. doi: 10.9734/IJPSS/2015/16234
  31. Norton, U., P. Bista*, R. Ghimire, J.B. Norton. 2014. One-time summer tillage does not negate long-term benefits of no-till. Crops and Soils: May-June: 24-25. doi: 10.2134/cs2014-47-3-6
  32. Odhiambo, J.*, U. Norton, E.C. Omondi, D.S. Ashilenje, D.N. Sikuku, J.B. Norton. 2014. Soil carbon and nitrogen mineralization and crop parameters in typical maize-bean intercropping in western Kenya. International Journal of Plant and Soil Science 5: 127-142. doi: 10.9734/IJPSS/2015/14476
  33. Hurisso, T., J. Norton, U. Norton. 2014. Labile soil organic carbon within a gradient of dryland agricultural land-use intensity in the central High Plains, USA. Geoderma, 226-227: 1-7. http://www.uwyo.edu/esm/faculty-and-staff/jay-norton/papers/hurisso-etal-2014-geoderma.pdf
  34. Taylor, M., A. Hild, N. Shaw, U. Norton, T. Collier. 2014. Plant recruitment and soil microbial characteristics of rehabilitation seedings following wildfire in northern Utah. Restoration Ecology. doi:10.1111/rec.12112 https://www.fs.fed.us/rm/pubs_other/rmrs_2014_taylor_m001.pdf
  35. Ghimire, R., J. Norton, P. Stahl, U. Norton. 2014. Soil Microbial Substrate Properties and Microbial Community Responses under Irrigated Organic and Reduced-Tillage Crop and Forage Production Systems. PLOS ONE 9(8): e103901 https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0103901
  36. Hurisso, T., J. Norton, U. Norton. 2013. Soil profile carbon and nitrogen in prairie, perennial grass-legume mixture and wheat-fallow production in the central High Plains, USA. Agriculture, Ecosystem and Environment 181: 179-187. http://www.uwyo.edu/esm/faculty-and-staff/jay-norton/papers/hurisso-etal-2013.pdf
  37. Ghimire, R., J.B. Norton, U. Norton, J.P. Ritten, P.D. Stahl, J.M. Krall. 2013. Long-term farming systems research in the Northern High Plains. Renewable Agriculture and Food Systems 28: 183-193. https://www.cambridge.org/core/journals/renewable-agriculture-and-food-systems/article/abs/longterm-farming-systems-research-in-the-central-high-plains/E2A0FE9B9726B8581740A00B014DCD24
  38. Norton, U., P. Saetre, T. Hooker, J. Stark. 2012. Vegetation and moisture controls on soil C mineralization in semi-arid environments. Soil Science Society of America Journal 78: 1038-1047. doi:10.2136/sssaj2011.0270
  39. Edburg, S.L., J.A. Hicke, P.D. Brooks, E. Pendall, B.E. Ewers, U. Norton, Gochis, E. Gutman. 2012. Cascading impacts of bark-beetle caused tree mortality to coupled biogeophysical and biogeochemical processes. Frontiers in Ecology and the Environment, 10: 416-424. https://esajournals.onlinelibrary.wiley.com/doi/abs/10.1890/110173
  40. Norton, J.B., E.J. Mukhwana, U. Norton. 2012. Loss and recovery of soil organic carbon and nitrogen in a semiarid agroecosystem. Soil Science Society of America 76: 505-514. http://www.uwyo.edu/esm/faculty-and-staff/jay-norton/papers/norton-et-al-2012-wheat.pdf
  41. Norton, J.B., L. Jungst, U. Norton, H. Olsen, K. Tate, W. Horwath. 2011. Soil Carbon and Nitrogen Storage in Upper Montane Riparian Meadows. Ecosystems 14: 1217-1231. http://www.uwyo.edu/esm/faculty-and-staff/jay-norton/papers/norton-et-al-2011-ecosystems.pdf
  42. Pendall, E., B. Ewers, U. Norton, P. Brooks, W.J. Massman, H. Barnard, D. Reed, T. Aston, J. Frank. 2010. Impacts of beetle-induced forest mortality on carbon, water and nutrient cycling in the Rocky Mountains. Ecological Society of America FluxLetter 3(1): 17-21.
  43. Ritten, J.P., C.T. Bastian, B.S. Rashford, J. Norton, U. Norton, S.I. Paisley, P. Burgener. 2010. Can Carbon Find a Home on the Range? Western Economics Forum8(2): 14-20.
  44. Norton, U., A.R. Mosier, J.A. Morgan, P.D. Stahl, J.D. Derner, 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.
  45. Hooker, T.D., J.M. Stark, U. Norton, A.J. Leffler, M. Peek, 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.
  46. Norton, J.B., T.A. Monaco, U. Norton. 2007. Mediterranean annual grasses in western North America: Kids in a candy store (invited commentary). Plant and Soil 298:1-5.
  47. Blumenthal, D, U. Norton, J. D. Derner, J.D. Reeder. 2006. Long-term effects of tebuthiuron on Bromus tectorum. Western North American Naturalist 66:420-425.
  48. Austin, A.T., L. Yahdijan, J.M. Stark, J. Belnap, A. Porporato, U. Norton, D.A. Ravetta, S.M. Scheffer. 2004. Water pulses and biogeochemical cycles in arid and semiarid ecosystems. Oecologia 141 (2): 221-235.
  49. 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.
  50. Choromanska, U. and T.H. DeLuca. 2001. Prescribed fire alters the impact of wildfire on soil biochemical properties in a ponderosa pine forest. Soil Science Society of America Journal 65: 232-238.

 

Synergistic Activities:

  • Faculty Adviser to ACRES Student Farm Recognized Student Organization
  • Active collaborations with scientists conducting research in Ghana, Iceland, Kenya, Poland, Switzerland, Uganda, and Ukraine
  • Professional Memberships in: Agronomy-Crop Science-Science Society of America (1994) American Geophysical Union (2003), Ecological Society of America (1997), Gamma, Sigma, Delta Chapter of Agriculture, Iowa State University (1995) and University of Wyoming (2015), Sigma Xi, University of Montana (1998)
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