University of California, Riverside

Environmental Sciences



James O. Sickman


James O. Sickman

James Sickman Photo

Associate Professor of Hydrology

Academic Degrees:

  • Ph.D., Watershed Biogeochemistry, U.C. Santa Barbara, 2001
  • M.A., Aquatic and Ecosystem Science, U.C. Santa Barbara, 1991
  • B.A., Aquatic Biology, U.C. Santa Barbara, 1983

Specialization:

  • Watershed hydrology and biogeochemistry, application of stable and radioisotopes to environmental science.

Research Group:

  • Graduate Students
    Andrea Heard - Ph.D., Environmental Sciences program
    Critical loads for atmospheric nutrient deposition in the Sierra Nevada
    Peter Homyak  - Ph.D., Soil and Water Sciences program
    Phosphorus biogeochemistry of terrestrial and aquatic ecosystems of the Sierra Nevada
    Amanda James  - Ph.D, Environmental Sciences Program
    Utilizing native plant species as biological sensors for atmospheric deposition
    Paul Koster  - Ph.D, Environmental Sciences program
    Applications of stable isotopes in air pollution and food web studies
  • Other
    • Wei Huang  - Ph.D 2010, University of Massachusetts, Boston - Assistant Specialist
    • Ahmed Haggag - Undergraduate researcher
    • Jennifer Quach - Undergraduate researcher

Representative Publications:

  • Albertin, A., Sickman, J.O., Pinowska, A., Stevenson, R.J. 2011. Identification of nitrogen sources and transformations within karst springs using isotope tracers of nitrogen. Biogeochemistry: DOI 10.1007/s10533-011-9592-0.
  • Vicars, W., Sickman, J.O. 2011. Mineral dust transport to the Sierra Nevada, California: Loading rates and potential source areas. Journal of Geophysical Research, Biogeosciences: doi:10.1029/2010JG001394.
  • López-Medellín, X., Ezcurra, E., Gonzalez-Abraham, C., Hak, J., Santiago, L., Sickman, J.O. 2011. Oceanographic anomalies and sea level rise drive mangroves inland in the Pacific coast of Mexico. Journal of Vegetation Science. Vol. 22: p.143-151.
  • Vicars, W., Sickman, J.O., Ziemann, P.J. 2010. Atmospheric phosphorus deposition at a montane site: Size distribution, effects of wildfire, and ecological implications. Atmospheric Environment. Vol. 44: p.2813-2821.
  • Sickman, J.O, DiGiorgio, C., Davisson, M.L., Lucero, D.M, and B. Bergamaschii. 2010. Identifying sources of dissolved organic carbon in agriculturally dominated rivers using radiocarbon age dating: Sacramento-San Joaquin River Basin, California. Biogeochemistry. DOI 10.1007/s10533-009-9391-z.
  • Schuur, E., Vogel, J.G., Crummer, K., Lee, H., Sickman, J.O., and T.E. Osterkamp. 2009. Permafrost thaw stimulates old carbon release and alters net carbon exchange from upland tundra. Nature. Vol. 459: p.556-559.

Courses Taught:

  • ENSC 163 Physical Hydrology
  • ENSC 218 Isotopes in Ecology and Environmental Science
  • ENSC 227 Global Change and the Earth System

Graduate Program Affiliations and Research Focus Areas:

Links:

More Information

General Campus Information

University of California, Riverside
900 University Ave.
Riverside, CA 92521
Tel: (951) 827-1012

Department Information

Enviromental Sciences
Geology 2258

Tel: (951) 827-4647
Fax: (951) 827-3993
E-mail: heidi.dyck@ucr.edu

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