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Indiana University

Faculty Directory

Todd V. Royer

Associate Professor


Print-quality Photo
troyer@indiana.edu
(812) 855-0563
MSBII Room 426


Education
Ph.D., Idaho State University, 1999
M.S., Idaho State University, 1995
B.S., Iowa State University, 1992

Professional Experience

  • Chair, BSES Program Committee, School of Public and Environmental Affairs, Indiana University, 2011 — present
  • Associate Professor, School of Public and Environmental Affairs, Indiana University,2010 — present
  • Assistant Professor, School of Public and Environmental Affairs, Indiana University, 2005 — 2010
  • Assistant Professor, Kent State University, 2003 — 2005
  • Post-doctoral Research Associate, University of Illinois, 2000 — 2003

Professional Interests
Aquatic biogeochemistry, water resources, nutrient and carbon cycling in streams and rivers, water quality and nutrient standards

Current Projects
Research in Dr. Royer’s laboratory addresses questions related to aquatic biogeochemistry, particularly nitrogen, carbon, and phosphorus cycling in streams and rivers. Current projects are focused on water quality and the interdisciplinary study of microbial community structure, dissolved organic matter, and denitrification in agricultural streams. For a full description of publications, laboratory personnel, and other research activities, click here to visit Dr. Royer’s research web site.

Selected Publications
Full Vita (pdf)

  • Gardner, K.M. and T.V. Royer. 2010. Effect of road salt application on seasonal chloride concentrations and toxicity in south-central Indiana streams. Journal of Environmental Quality 39:1036–1042.
  • Warrner, T.J., T.V. Royer, J.L. Tank, N.A. Griffiths, E.J. Rosi-Marshall, and M.R. Whiles. 2009. Dissolved organic carbon in streams from artificially drained and intensively farmed watersheds in Indiana, USA. Biogeochemistry 95:295–307.
  • McDaniel, M.D., M.B. David, and T.V. Royer. 2009. Relationships between benthic sediments and water column phosphorus in Illinois streams. Journal of Environmental Quality 38:607–617.
  • Griffiths, N.A., J.L. Tank, T.V. Royer, E.J. Rosi-Marshall, M.R. Whiles, C.P. Chambers, T.C. Frauendorf, M.A. Evans-White. 2009. Rapid decomposition of maize detritus in agricultural headwater streams. Ecological Applications 19:133–142.
  • Royer, T.V., M.B. David, L.E. Gentry, C.A. Mitchell, K.M. Starks, T. Heatherly, and M.R. Whiles. 2008. Assessment of chlorophyll-a as a criterion for establishing nutrient standards in the streams and rivers of Illinois. Journal of Environmental Quality 34:437–447.
  • Rosi-Marshall, E.J., J.L. Tank, T.V. Royer, M.R. Whiles, M. Evans-White, C. Chambers, N.A. Griffiths, J. Pokelsek, and M.L. Stephen. 2007. Toxins in transgenic crop byproducts may affect headwater streams. Proceedings of the National Academy of Sciences 104:16204-16208.
  • Das, M., T.V. Royer, and L.G. Leff. 2007. Diversity of fungi, bacteria, and actinomycetes on leaves decomposing in a stream. Applied and Environmental Microbiology 73:756–767.
  • Gentry, L.E., M.B. David, T.V. Royer, C.A. Mitchell, and K.M. Starks. 2007. Phosphorus transport pathways to streams in tile-drained agricultural watersheds. Journal of Environmental Quality 36:408–415.
  • David, M.B., L.G. Wall, T.V. Royer, and J.L. Tank. 2006. Denitrification and the nitrogen budget of a reservoir in an agricultural landscape. Ecological Applications 16:2177–2190.
  • Royer, T.V., M.B. David, and L.E. Gentry. 2006. Timing of riverine export of nitrate and phosphorus from agricultural watersheds in Illinois: implications for reducing nutrient loading to the Mississippi River. Environmental Science & Technology 40:4126–4131.
  • Royer, T.V. and M.B. David. 2005. Export of dissolved organic carbon from agricultural streams in Illinois, USA. Aquatic Sciences 67:465–471.
  • Royer, T.V., J.L. Tank, and M.B. David. 2004. Transport and fate of nitrate in headwater agricultural streams in Illinois. Journal of Environmental Quality 33:1296–1304.