Areas of Interest: Primary research interests are determining chemical, physical, and biological factors that regulate aerobic and anaerobic fate and transport of inorganic and organic contaminants in upland soils, wetlands, and aquatic environments, and characterizing the microbial communities responsible for contaminant transformation processes.

2005-present, Associate Professor, Plant and Soil Science Department, University of Kentucky, Lexington, KY.

1999-2005, Assistant Professor, Plant and Soil Science Department, University of Kentucky, Lexington, KY.

1986-1999, Senior Biological Scientist, Department of Soil and Water Science, University of Florida, Gainesville, FL.

Research Topics

"Career: Microbial community dynamics during bioremediation of PCBs in soils", National Science Foundation, 2002 to 2007.

"Arsenic speciation and sub-surface losses in poultry litter-amended soils”, Senate Bill 271, 2006 to 2009

"Changes in livestock antibiotic levels and antibiotic resistant bacteria numbers along topohydrosequences in western Kentucky agroecosystems", USDA, 2005 to 2008.