My broad research interests are in how microbiological, geochemical, and hydrologic processes impact the fate and transport of chemicals in complex natural systems. Chemical concentration and form affect ecosystem function and human health principally through the air we breathe, the food we eat, and the water we drink. Recent projects include water resources impacted by crude oil spills, landfill leachate, jet fuels and solvents as well as "unimpacted" drinking waters such as the desert oasis in the Pahranagat Valley, the source for much of Nevada's drinking water. My lab investigates the rates of chemical fate and transport using a combination of field investigations, laboratory experiments and numerical modeling.
* indicates a graduate student author
*Arora, B., B. P. Mohanty, J. T. McGuire, and I. M. Cozzarelli (in press), Temporal dynamics of biogeochemical processes at the Norman Landfill site, Water Resources Research, accepted August 12, 2013
Mendoza-Sanchez I.,Phanikumar MS, Niu, J., Masoner JR, Cozzarelli I., McGuire JT. (in press) Quantifying Wetland-Aquaifer Interactions in a Humid Subtropical Climate Region: An Integrated Approach, Journal of Hydrology accepted June 2013
*Arora, B., B. P. Mohanty, and J. T. McGuire (2012), Uncertainty in dual permeability model parameters for structured soils, Water Resources Research, 48, W01524, doi: 10.1029/2011WR010500
*Hansen, D.J., McGuire, J.T., and Mohanty, B.M. (2011) Enhanced biogeochemical cycling and subsequent reduction of hydraulic conductivity associated with soil-layer interfaces in the vadose zone. Journal of Environmental Quality, 40 (6), 1941-1954, doi:10.2134/jeq2011.0112 Posted online 5 Oct. 2011
*Arora, B., B. P. Mohanty, and J. T. McGuire (2011), Inverse Estimation of Parameters for Multi-Domain Flow Models with Different Macropore Densities, Water Resources Research, 47, W04512, doi:10.1029/2010WR009451. (Note: This publication was a featured article in EOS, Transactions of the American Geophysical Union)
*Kneeshaw, T.A., McGuire, J.T., Cozzarelli, I.M., & Smith, E.W. (2011) Quantifying In Situ Rates of Sulfate Reduction in Response to Geochemical Perturbations. Ground Water, p. 1-11. doi: 10.1111/j.1745-6584.2010.00782.x
Phanikumar, M.S. and McGuire, J.T., (2010) A multi-species reactive transport model to estimate biogeochemical rates based on single-well, push-pull test data, Computers & Geosciences, 36, 997-1004
*Baez-Cazull, S.E., McGuire, J.T., Cozzarelli I.M., and Voytek, M.A. (2008) Determination of dominant biogeochemical processes in a contaminated aquifer-wetland system using multivariate statistical analyses. Journal of Environmental Quality37(1), 30-46.
*Kneeshaw, T.A. McGuire, J.T., Cazull, S.E.B., Smith, E.W., Cozzarelli, I.M. (2007) Evaluation of sulfate reduction at experimentally induced mixing interfaces using small-scale push-pull tests in an aquifer-wetland system. Applied Geochemistry, special issue on Biogeochemical Gradients, 22, 2618-2629.
* Baez-Cazull, S.E., McGuire, J.T., Cozzarelli, I.M., Raymond. A. and Welsh, L., (2007) Centimeter-scale characterization of biogeochemical gradients at a wetland-aquifer interface using capillary electrophoresis. Applied Geochemistry, special issue on Biogeochemical Gradients, 22, 2664-2683.
Velbel, M.A., McGuire, J.T., and Madden, A.J., 2007, Scanning electron microscopy of garnet from southern Michigan soils: Etching rates and inheritance of pre-glacial and pre-pedogenic grain-surface textures. Chapter 15, Developments in Sedimentology, Volume 58; Heavy Minerals in Use, edited by Maria A. Mange and David T. Wright
McGuire, J.T., Long, D.T., Hyndman, D.W., 2004, Analysis of recharge induced geochemical change in a contaminated aquifer. Ground Water, 43(4), 518-530.
Phanikumar, M. S., and McGuire, J.T. 2004, A 3D partial-equilibrium model to simulate coupled hydrogeological, microbiological, and geochemical processes in subsurface systems. Geophysical Research Letters 31 (LII503):1-4.
Haack, S.K., Fogarty, L.R., West, T.G., Alm, E.W., McGuire, J.T., Long, D.T., Hyndman, D.W., Forney, L.J., 2004, Changes in microbial community structure over spatial and temporal chemical gradients in a contaminated aquifer, Environmental Microbiology, 6(5), 438-448.
McGuire, J. T., Long, D.T., Klug, M.J., Haack, S.K., and Hyndman, D.W., 2002, Evaluating the behavior of oxygen, nitrate, and sulfate during recharge and quantifying reduction rates in a contaminated aquifer, Environmental Science and Technology, 36, 2693-2700.
McGuire, J. T., Smith, E. W., Long, D. T., Hyndman, D. W., Haack, S. K., Klug, M. J., and Velbel, M. A., 2000, Temporal variations in parameters reflecting terminal-electron-accepting processes in an aquifer contaminated with waste fuel and chlorinated solvents, in K. Konhauser and G. Southam (eds.), Geomicrobiology - Technical Session 06, 110th Geological Society of America Annual Meeting. Chemical Geology, 169:471-485. (Invited paper)
McGuire, J.T., Smith, E.W., Long, D.T., Hyndman, D.W., Haack, S.K., Kolak, J.J., Klug, M.J., Velbel, M.A., and Forney, L.J., 1999, Temporal variations in biogeochemical processes that influence ground water redox zonation. In Morganwalp, D.W., and Buxton, H.T., eds., U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings of the Technical Meeting, Charleston, South Carolina, March 8-12, 1999,USGS Water-Resources Investigations Report 99-4018C, 641-652.
05/13 National Crude Oil Spill Fate and Natural Attenuation Research Site, a collaborative venture of the USGS, Enbridge Energy, Limited Partnership, the Minnesota Pollution Control agency, and Beltrami County: Laboratory Microcosm Studies of Biogeochemical Controls on Biodegradation Rates of Hydrocarbons in Subsurface Wetland Systems ($9996)
05/12 National Crude Oil Spill Fate and Natural Attenuation Research Site, a collaborative venture of the USGS, Enbridge Energy, Limited Partnership, the Minnesota Pollution Control agency, and Beltrami County: Field studies of physical and biogeochemical controls on fate and transport of hydrocarbons (BTEX and ethanol) in subsurface systems ($10,053)
05/11 Minnesota Pollution Control Agency: Field studies of physical and biogeochemical controls on fate and transport of hydrocarbons (BTEX and ethanol) in subsurface systems ($10,042)
05/10 Minnesota Pollution Control Agency: Field Studies of Chemical and Microbiological Controls on Biodegradation Rates of BTEX in Aquifer and Wetland systems ($9,995)
05/07 NSF-Hydrological Sciences-“Flow-Induced Redox Geochemistry within Fractured/Macroporous and Layered Vadose zone” Co-PI with Binayak Mohanty ($480,000)
10/04 NSF-Biocomplexity in the Environment: Coupled Biogeochemical Cycles“Quantifying the Role of Mixing Interfaces in a Contaminated Aquifer-Wetland System: Linking Hydrogeological, Microbiological, & Geochemical Processes” With Co-PIs I.M. Cozzarelli, M.A. Voytek, and M.S. Phanikumar ($1,064,000).
07/03 Center for Environmental and Rural Health-NIH. “Correlating Biogeochemical Processes at Mixing Interfaces within a Contaminated Aquifer-Wetland System ($25,000)
05/03 Texas Water Resources Institute. “Instrumentation to Measure Evolution of Gases from Subsurface Flow Constructed Wetlands” ($10,000)