Education

Research Description

Stream/aquifer interaction; stream bank erosion and failure; seepage erosion; subsurface nutrient transport; vegetative filter strips; and contaminant transport modeling.

Honors and Awards

• James and Karen Gilley Academic Leadership Award (ASABE), 2021
• ASABE Presidential Citation for Leadership as Editor-in-Chief of ASABE Journals, 2020
• ASABE Fellow, 2020
• Editor in Chief of the ASABE Journals, 2019
• ASABE Board of Trustees, 2019
• Food Systems Leadership Institute (FSLI) Cohort 14 Fellow, 2018
• 2018 ADS/Hancor Soil and Water Engineering Award (ASABE), 2018
• Medal for Excellence in University Teaching by Oklahoma Foundation for Excellence, 2016
• Superior Paper Award (ASABE) – Heeren et al. (2015), 2016
• National USDA Food and Agricultural Sciences Excellence in Teaching Award, 2015
• Oklahoma State Regent’s Distinguished Research Award, 2015
• ASABE Educational Aids Blue Ribbon Award for Foundations of Oklahoma Water Video Series, 2015
• ASABE NRES Division Leadership Citation Award, 2015
• Holder of the Thomas E. Berry Endowed Professorship in Integrated Water Resou rces and Management, 2015
• LEAD-21 Class X, 2014
• Two Superior Paper Awards (ASABE) – Al -Madhhachi et al. (2013) and Daly et al. (2013), 2014
• Mortar Board Golden Torch Award (OSU), 2014
• Regents Distinguished Teaching Award (OSU), 2013
• Superior Paper Award (ASABE) – Guzman and Fox (2012), 2013
• Top 20 Science & Engineering Professor in Oklahoma, 2013
• Inaugural Holder of the Buchanan Endowed Chair in Biosystems and Agricultural Engineering (OSU), 2012
• A.W. Farrall Young Educator Award (National Award from ASABE), 2012
• Sterling L. (Bud) Burks Environmental Research Award (OSU Environmental Science Program), 2011
• New Holland Young Researcher Award (National Award from ASABE), 2010
• Halliburton Young Faculty Award (OSU CEAT), 2010
• James Whatley Research Award (OSU DASNR), 2009
• Alpha Epsilon Distinguished Service Award (OSU BAE), 2009
• Alpha Epsilon Distinguished Service Award (OSU BAE), 2008
• University of Mississippi Junior Faculty Award (Ole Miss College of Engineering ), 2005
• USDA National Needs Graduate Fellow (Colorado State University), 2000
• U.S. EPA Science to Achieve Results (STAR) Graduate Fellow (Texas A&M University), 1998

Publications

GUIDANCE ON APPLIED PRESSURE HEADS FOR QUANTIFYING COHESIVE SOIL ERODIBILITY WITH A JET EROSION TEST (JET)

Fox, G. A., Guertault, L., Castro-Bolinaga, C., & Swanson, A. (2022), JOURNAL OF THE ASABE, 65(6), 1443–1450. https://doi.org/10.13031/ja.14884

PERSPECTIVE: LESSONS LEARNED, CHALLENGES, AND OPPORTUNITIES IN QUANTIFYING COHESIVE SOIL ERODIBILITY WITH THE JET EROSION TEST (JET)

Fox, G. A., Guertault, L., Castro-Bolinaga, C., Allen, P., Bigham, K. A., Bonelli, S., … Thompson, T. W. (2022), JOURNAL OF THE ASABE, 65(2), 197–207. https://doi.org/10.13031/ja.14714

ADVANCING SURFACE WATER PESTICIDE EXPOSURE ASSESSMENTS FOR ECOSYSTEM PROTECTION

Fox, G. A., Munoz-Carpena, R., Brooks, B., & Hall, T. (2021), TRANSACTIONS OF THE ASABE, 64(2), 377–387. https://doi.org/10.13031/trans.14225

Comment on "Modeling slope rainfall-infiltration-runoff process with shallow water table during complex rainfall patterns" by Wu et al. (2021)

Munoz-Carpena, R., Lauvernet, C., Carluer, N., & Fox, G. A. (2021), JOURNAL OF HYDROLOGY X, 13. https://doi.org/10.1016/j.hydroa.2021.100113

DETECTING MACROPORE FINGERING USING TEMPORAL ELECTRICAL RESISTIVITY IMAGING

Halihan, T., Hager, J. P., Guertault, L., & Fox, G. A. (2021), APPLIED ENGINEERING IN AGRICULTURE, 37(5), 861–870. https://doi.org/10.13031/aea.14294

HIGH-RESOLUTION PORE-SCALE WATER CONTENT MEASUREMENT IN A TRANSLUCENT SOIL PROFILE FROM LIGHT TRANSMISSION

Orozco-Lopez, E., Munoz-Carpena, R., Gao, B., & Fox, G. (2021), TRANSACTIONS OF THE ASABE, 64(3), 949–962. https://doi.org/10.13031/trans.14292

A CASE STUDY ON THE RELEVANCE OF THE JOURNAL IMPACT FACTOR

Fox, G. A., Fox, A. K., & Guertault, L. (2020), TRANSACTIONS OF THE ASABE, 63(2), 243–249. https://doi.org/10.13031/trans.13756

Internal erosion of soil pipes: Sediment rating curves for soil pipes

Wilson, G. V., Ursic, M., Fox, G. A., & Nieber, J. L. (2020), Earth Surface Processes and Landforms, 10. https://doi.org/10.1002/esp.5009

Performance of preferential flow models in predicting infiltration through a remolded soil with artificial macropores

Guertault, L., & Fox, G. A. (2020), VADOSE ZONE JOURNAL, 19(1). https://doi.org/10.1002/vzj2.20055

Preferential Flow in Riparian Groundwater: Gateways for Watershed Solute Transport and Implications for Water Quality Management

Hester, E. T., & Fox, G. A. (2020), Water Resources Research, 56(12). https://doi.org/10.1029/2020WR028186

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Grants

Harnessing (bio-)electrochemical Technologies as Sustainable Sources for on Demand Precision Agriculture

Game-Changing Research Incentive Program for Plant Sciences (GRIP4PSI)(2/17/20 - 6/30/23)

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Harnessing (bio-)electrochemical Technologies as Sustainable Sources for on Demand Precision Agriculture

Sponsor: Game-Changing Research Incentive Program for Plant Sciences (GRIP4PSI)

Start Date: 2/17/20

End Date: 6/30/23

Abstract

Enabling the next generation of sustainable farms requires a paradigm shift in resource management of the two most critical agricultural inputs for food production: water and nitrogen (N) - based fertilizer. Inefficient management of these resources increases food production costs, decreases productivity, and impacts the environment. An integrated approach is needed to improve the sustainability and efficiency throughout the production chain. Emerging (bio)electrochemical (BEC) technologies offer alternatives to conventional, fossil-fuel intensive N fertilizer production. Recently our team has demonstrated two game-changing BEC technologies: 1) microbial conversion of nitrogen gas into ammonium, and 2) plasma generation of N species (e.g., nitrate, nitrite) and other reactive species in water for fertilization and anti-pathogen benefits. We will integrate these technologies to produce BEC, N-based fertilizer, and with advanced sensor and delivery systems, we will precisely supply fertilizers for sustainable precision agriculture. Our proposed approach focuses on the development of a novel “BEC fertigation on demand system” by using sensor-driven data and molecular analyses to investigate BEC fertigation impact on the plants’ growth, adaptation, and microbiome; its impact on food safety and quality, and its economic feasibility for on-farm deployment.

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Determining Instream Flows Needed to Support the Federally-threatened Arkansas River Shiner Notropis Girardi and Associated Assemblage

US Geological Survey (USGS)(8/01/18 - 12/31/20)

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Determining Instream Flows Needed to Support the Federally-threatened Arkansas River Shiner Notropis Girardi and Associated Assemblage

Sponsor: US Geological Survey (USGS)

Start Date: 8/01/18

End Date: 12/31/20

Abstract

Pelagic broadcast spawning fish (hereafter pelagophil) is a threatened reproductive guild of fishes emblematic of the Great Plains. This group of fishes represent approximately 20 species of small-bodied minnows that release semi-buoyant eggs and potentially require substantial lengths of free-flowing river to successfully complete development (Perkin and Gido 2011). Thirteen of these species are considered of conservation concern (Warren et al. 2000; Jelks et al. 2008). The rapid decline of this reproductive ecotype has been attributed to a range of factors including altered flow regimes (Hughes 2005), and fragmentation (Hoagstrom et al. 2011; Perkin and Gido 2011). Dewatering, combined with other forms of fragmentation (e.g., large reservoirs), act synergistically to exacerbate the decline of pelagophils (Perkin et al., 2015). Stream connectivity is hypothesized to be important for migrations by some pelagophils (Chase et al. 2015) and downstream drift of eggs and larvae (Worthington et al. 2014). High-flow events have been linked to spawning (Bestgen et al., 1989; Dudley, 2004), whereas decreased discharges during the spawning period of the Arkansas River Shiner is related to a truncated distributions (Zhang et al., 2016). Therefore, it is likely that several aspects of the flow regime are important to Great Plains fishes and determining which metrics relate to overall population persistence would be beneficial. To improve our understanding of the flow needs for fishes of the Great Plains, we need to understand how various aspects of the flow regime affect these threatened fishes. We need to identify the flows in the current channel cross section that will maintain the habitat complexity needed to maintain eggs in suspension while slowing their drift rate to prevent the eggs from being washed into downstream reservoirs (Worthington et al. 2014). These channel-maintaining flows will be important for ensuring the low-flow channel maintains habitat features that slow downstream drift of eggs and larvae. Therefore, the objectives of the study are 1) to determine flow conditions that promote the variability and complexity of in-stream habitats, and specific flow velocities (about 0.5 m/s) and longitudinal stream connectivity, and 2) evaluate the stream lateral connectivity during high flows, and locate potential refuge habitats.

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REU Site: Evaluating the Effectiveness of a Stream Restoration Project Based on Natural Channel Design Using Process-Based Investigations

National Science Foundation (NSF)(3/01/17 - 8/01/18)

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REU Site: Evaluating the Effectiveness of a Stream Restoration Project Based on Natural Channel Design Using Process-Based Investigations

Sponsor: National Science Foundation (NSF)

Start Date: 3/01/17

End Date: 8/01/18

Abstract

A Research Experience for Undergraduates (REU) Site will provide two undergraduate students a research experience over a ten-week period during the summer of 2017 as part of the third year of this grant project (Award Number: 1358908). Dr. Fox was originally the PI on this project prior to moving to NC State University in January 2017. The research will include studies in hydrology and water quality on stream restoration and rehabilitation projects. Two students will be specifically supported at NC State University through a subcontract to NC State University. The students will be led by Dr. Garey Fox along with other faculty members that will help advise the students during their research projects. Dr. Fox will ensure the appropriate mentoring and professional development of these students during the 10-week period (May-August). Dr. Fox and the two students will travel to Oklahoma State University to interface with five other NSF REU students. The students will also participate in undergraduate research symposiums and present their research at conferences. The subcontract will cover travel costs and also participant support costs (stipend, housing, and meals).

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Influence of Preferential Flow on Coupled Colloid, Nitrogen, and Phosphorus Transport Through Riparian Buffers

US Dept. of Agriculture - National Institute of Food and Agriculture (USDA NIFA)(11/15/16 - 11/14/20)

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Influence of Preferential Flow on Coupled Colloid, Nitrogen, and Phosphorus Transport Through Riparian Buffers

Sponsor: US Dept. of Agriculture - National Institute of Food and Agriculture (USDA NIFA)

Start Date: 11/15/16

End Date: 11/14/20

Abstract

The design of conservation practices such as vegetative filter strips and riparian buffers typically focuses on surface runoff with subsurface nutrient transport usually assumed to be negligible. However, subsurface transport can become significant with preferential leaching and can negate the intended benefits of widely adopted control practices like riparian buffers. To limit degradation of ecosystem services and improve resource use efficiency, foundational research is needed on surface/subsurface transport mechanisms and techniques to simulate these pathways. Through both theoretical development and application-based research, this proposal hypothesizes that (i) if gravel outcrops and macropores are prevalent in riparian areas, then nutrients will rapidly leach through the surface to subsurface pathways, be rapidly transported to streams, and limit the effectiveness of conservation practices; and (ii) if mechanistic processes of preferential leaching and subsurface transport are incorporated into decision-support tools, then prediction of the performance of conservation practices such as riparian buffers will be improved. Simultaneous injection experiments using tracers, colloids, nitrate, and phosphorus will be performed in laboratory tests and at six riparian sites to identify surface and subsurface transport mechanisms through state-of-the-art monitoring techniques. Experimental data will test and refine decision-support tools for riparian buffers through the use of an innovative model (VFSmod) and new theories (source-responsive model) on the effect of macropores and preferential pathways. This research will have wide reaching implications; the effectiveness of conservative practices will be better understood and more appropriately implemented, ensuring that funds utilized to prevent nutrient transport are successful in providing long-term agricultural sustainability

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