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Brent Dalzell

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Graduation Year: 2000

Degree: M.S.

Location: Twin Cities

Advisor: Prasanna Gowda

Thesis Title:
 Modeling and evaluation of nonpoint source pollution in the lower Minnesota River Basin.

Job Title: Post-Doctorial Research Associate

Job Description:
I'm presently a post-doctoral researcher at the University of Minnesota - Large Lakes Observatory. My current research interests focus on characterizing transformations of natural organic matter in aquatic systems. I also work on determining the influence of land cover, land management, seasonality, and hydrology on the nature and extent of organic carbon export from terrestrial ecosystems.

My PhD work was in the Department of Earth and Atmospheric Sciences at Purdue University. Through funding from the USDA National Needs Fellow Ship Program, I worked with Drs. Jon Harbor and Tim Filley on watershed biogeochemistry. My PhD research focused on applying molecular biomarkers and stable carbon isotopes in order to track the sources, export, and processing of terrestrial organic matter from an agricultural watershed.

Contact Information:
Web site: http://www.d.umn.edu/~bdalzell/

Publications:
Dalzell, B. J., T. R. Filley, and J. M. Harbor. The role of hydrology in annual organic carbon loads and terrestrial organic matter export from a midwestern agricultural watershed. (in press – Geochimica et Cosmochimica Acta).

Gowda, P. H., B. J. Dalzell, D. J. Mulla. (accepted) Model based nitrate TMDLs for two agricultural watersheds of southeastern Minnesota. Journal of the American Water Resources Association.

Minor, E. C., J. Pothen, B. J. Dalzell, H. Abdulla and K. Mopper. 2006. Effects of salinity changes on the photodegradation and UV-visible absorbance of terrestrial dissolved organic matter. Limnology and Oceanography. 51(5), 2181-2186.

Dalzell, B. J., T. R. Filley, and J. M. Harbor. 2005. Flood pulse influences on terrestrial organic matter export from an agricultural watershed. Journal of Geophysical Research. 110(G02011) doi:10.1029/2005JG000043.

Dalzell, B. J., P. H. Gowda, and D. J. Mulla. 2004. Modeling sediment and phosphorus losses in an agricultural watershed to meet TMDLs. Journal of the American Water Resources Association. 40(July 11, 2007J. Mulla, and B. J. Dalzell. 2004. Metamodeling phosphorus best management practices for policy use: a frontier approach. Agricultural Economics. 30: 63-74.

Mulla, D. H., P. H. Gowda, A. S. Birr, and B. J. Dalzell. 2003. Estimating nitrate-N losses at different spatial scales in agricultural watersheds. chapter in: Scaling Methods in Soil Physics. CRC Press. 295-307.

Gowda, P. H., D. J. Mulla, and B. J. Dalzell. 2003. Examining and targeting conservation tillage practices to steep/flat landscapes in the Minnesota River Basin. Journal of Soil and Water Conservation 58(1): 53-57.

Gowda, P. H., B. J. Dalzell, D. J. Mulla, and F. Kollman. 2001. Mapping tillage practices with Landsat Thematic Mapper based logistic regression models. Journal of Soil and Water Conservation 56(2): 91-96.