My research program addresses the biogeochemistry of elements that impact both agricultural productivity and environmental quality. Much of our work focuses on the reactive nitrogen (N) compounds - including nitrous oxide, nitric oxide, nitrate, nitrite and ammonia - each of which can have ecological impacts at local, regional and/or global scales when their concentrations become elevated above naturally occurring levels. We work mainly in agricultural, but also in forest and other ecosystems. Our goal is to better quantify, understand and predict the biochemical production and transformation of reactive N species within the soil and their physical transport to the broader environment using lab, field, and modeling techniques. We are also interested in the biogeochemistry of carbon and phosphorus. Our parallel objective is to evaluate management systems and treatment technologies that could minimize environmental impacts while maintaining agricultural production capacity.
Venterea, R.T., T.J. Clough, J.A. Coulter and F. Breuillin-Sessoms. 2015. Ammonium sorption and ammonia inhibition of nitrite-oxidizing bacteria explain contrasting soil N2O production. Sci. Rep. 5, 12153; doi: 10.1038/srep12153.
Maharjan, B. and R.T. Venterea. 2013. Nitrite intensity explains N management effects on N2O emissions in maize. Soil Biol. Biochem. 66:229-238
Venterea, R.T. 2010. Simplified method for quantifying theoretical underestimation of chamber-based trace gas fluxes. J. Environ. Qual. 39:126–135.
Venterea, R.T., M. S. Dolan, and T.E. Ochsner. 2010. Urea decreases N2O emissions compared with anhydrous ammonia in a Minnesota corn cropping system. Soil Sci. Soc. Am. J. 74:407-418.
Venterea, R.T., K.A. Spokas and J.M. Baker. 2009. Accuracy and precision analysis of chamber-based nitrous oxide gas flux estimates. Soil Sci. Soc. Am. J. 73:1087-1093.
Venterea, R.T. 2007. Nitrite-driven nitrous oxide production under aerobic soil conditions: Kinetics and biochemical controls. Global Change Biol. 13, 1798–1809.
Venterea, R.T., M. Burger, and K.A. Spokas. 2005. Nitrogen oxide and methane emissions under varying tillage and fertilizer management. J. Environ. Qual. 34:1467-1477.
Venterea, R.T., P.M. Groffman, L.V. Verchot, A.H. Magill, J.D. Aber and P.A. Steudler. 2003. Nitrogen oxide gas emissions from temperate forest soils receiving long-term nitrogen inputs. Global Change Biol. 6: 303- 316.
Venterea, R.T. and D.E. Rolston. 2000. Nitric and nitrous oxide emissions following fertilizer application to agricultural soil: Biotic and abiotic mechanisms and kinetics. J. Geophys. Res.-Atm. 105:15117-15129.
Venterea, R.T. and D.E. Rolston. 2000. Mechanisms and kinetics of nitric and nitrous oxide production during nitrification in agricultural soil. Global Change Biol. 6:303-316.