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Mark Williams
National Soil Erosion Research
Agricultural Engineering

Phone: (765) 494-8694
Fax: (765) 494-5948
Room 158

275 SOUTH RUSSELL STREET
WEST LAFAYETTE , IN 479072077
Projects
Maintaining Water Quality Monitoring Infrastructure for the St. Joseph River Watershed Conservation Effects Assessment Project
Cooperative Agreement (A)
  Accession Number: 433161
Production System and Climate Change Effects on Soil/Air/Water Quality for the Eastern Corn Belt
In-House Appropriated (D)
  Accession Number: 430537
Conservation Practice Impacts on Water Quality at Field and Watershed Scales
In-House Appropriated (D)
  Accession Number: 432501
Conservation Effects Assessment Project (CEAP) 2017 - Benchmark Watershed Assessment Studies (on croplands)
Interagency Reimbursable Agreement (I)
  Accession Number: 432618
Effect of Hydrologic and Biogeochemical Processes on Sediment and Nutrient Transport
Non-Assistance Cooperative Agreement (S)
  Accession Number: 433224
Maintaining Water Quality Monitoring Infrastructure for the St. Joseph River Watershed Conservation Effects Assessment Project
Non-Assistance Cooperative Agreement (S)
  Accession Number: 425258

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Phosphorus export from artificially drained fields across the Eastern corn belt -
Dissolved organic carbon loading from the field to watershed scale in tile-drained landscapes -
Williams, M.R., King, K.W., Fausey, N.R. 2017. Dissolved organic carbon loading from the field to watershed scale in tile-drained landscapes. Agricultural Water Management. 192:159-169.
A possible trade-off between clean air and clean water -
Smith, D.R., Stephensen, M., King, K.W., Jarvie, H.P., Haney, R.L., Williams, M.R. 2017. A possible trade-off between clean air and clean water. Journal of Soil and Water Conservation. 72(4):75A-79A. doi:10.2489/jswc.72.4.75A.
Addressing agricultural phosphorus loss in artificially drained landscapes with 4R nutrient management practices -
Linking soil phosphorus to dissolved phosphorus losses in the midwest Reprint Icon -
Duncan, E.W., King, K.W., Williams, M.R., LaBarge, G., Pease, L.A., Smith, D.R., Fausey, N.R. 2017. Linking soil phosphorus to dissolved phosphorus losses in the Midwest. Agricultural and Environmental Letters. doi: 10.2134/ael2017.02.0004.
Phosphorus availability in Western Lake Erie Basin drainage waters: legacy evidence across spatial scales -
King, K.W., Williams, M.R., Johnson, L.T., Smith, D.R., LaBarge, G.A., Fausey, N.R. 2017. Phosphorus availability in Western Lake Erie Basin drainage waters: legacy evidence across spatial scales. Journal of Environmental Quality. 46:466-469.
Modified APEX model for simulating macropore phosphorus contributions to tile drains -
Ford III, W.I., King, K.W., Williams, M.R., Confesor, R. 2016. Modified APEX model for simulating macropore phosphorus contributions to tile drains. Journal of Environmental Quality. doi:10.2134/jeq2016.06.0218.
Hydrologic and biogeochemical controls on phosphorus export from western Lake Erie tributaries Reprint Icon -
Williams, M.R., King, K.W., Baker, D., Johnson, L., Smith, D.R., Fausey, N.R. 2016. Hydrologic and biogeochemical controls on phosphorus export from western Lake Erie tributaries. Journal of Great Lakes Research. 42:1403-1411.
Imaging hydrological processes in headwater riparian seeps with time-lapse electrical resistivity -
Williams, M.R., Buda, A.R., Singha, K., Folmar, G.J., Elliott, H.A., Schmidt, J.P. 2016. Imaging hydrological processes in headwater riparian seeps with time-lapse electrical resistivity. Groundwater. 55(1):136-148. doi:10.1111/gwat.12461.
Edge-of-field evaluation of the Ohio phosphorus risk index -
Williams, M.R., King, K.W., Labarge, G., Confessor, R., Fausey, N.R. 2016. Edge-of-field evaluation of the Ohio phosphorus risk index. Journal of Environmental Quality. doi:10.2134/jeq2016.05.0198.
Framework to parameterize and validate APEX to support deployment of the nutrient tracking tool -
Moriasi, D.N., King, K.W., Bosch, D.D., Bjorneberg, D.L., Teet, S.B., Guzman, J.A., Williams, M.R. 2016. Framework to parameterize and validate APEX to support deployment of the nutrient tracking tool. Agricultural Water Management. 177:146-164.
Decreasing phosphorus loss in tile-drained landscapes using flue gas desulfurization gypsum -
King, K.W., Williams, M.R., Dick, W.A., LaBarge, G.A. 2016. Decreasing phosphorus loss in tile-drained landscapes using flue gas desulfurization gypsum. Journal of Environmental Quality. 45(5):1722-1730. doi:10.2134/jeq2016.04.0132.
Assessment and synthesis of 50 years of published drainage phosphorus losses Reprint Icon -
Christianson, L.E., Harmel, R.D., Smith, D.R., Williams, M.R., King, K.W. 2016. Assessment and synthesis of 50 years of published drainage phosphorus losses. Journal of Environmental Quality. 45:1467-1477. doi:10.2134/jeq2015.12.0593.
Effect of tillage on macropore flow and phosphorus transport to tile drains -
Williams, M.R., King, K.W., Ford III, W.I., Buda, A.R., Kennedy, C.D. 2016. Effect of tillage on macropore flow and phosphorus transport to tile drains. Water Resources Research. 52:2868-2882.
Managing acute phosphorus loss with fertilizer source and placement: Proof of concept -
Smith, D.R., Harmel, R.D., Williams, M.R., Haney, R.L., King, K.W. 2016. Managing acute phosphorus loss with fertilizer source and placement: Proof of concept. Agricultural and Environmental Letters. 1:1. doi:10.2134/ael2015.12.0015.
Edge-of-field research to quantify the impacts of agricultural practices on water quality in Ohio -
Williams, M.R., King, K.W., Ford III, W.I., Fausey, N.R. 2016. Edge-of-field research to quantify the impacts of agricultural practices on water quality in Ohio. Journal of Soil and Water Conservation. 71:9A-12A.
Uncertainty in nutrient loads from tile drained landscapes: Effect of sampling frequency, calculation algorithm, and compositing strategies Reprint Icon -
Williams, M.R., King, K.W., Macrae, M.L., Ford III, W.I., Van Esbroeck, C., Brunke, R.I., English, M.C., Schiff, S.L. 2015. Uncertainty in nutrient loads from tile drained landscapes: Effect of sampling frequency, calculation algorithm, and compositing strategies. Journal of Hydrology. 530:306-316.
Effect of crop type and season on nutrient leaching to tile drainage under a corn-soybean rotation Reprint Icon -
King, K.W., Williams, M.R., Fausey, N.R. 2016. Effect of crop type and season on nutrient leaching to tile drainage under a corn-soybean rotation. Journal of Soil and Water Conservation. 71:56-58.
Linking nitrogen management, seep chemistry, and stream water quality in two agricultural headwater watersheds -
Williams, M.R., Buda, A.R., Elliott, H.A., Collick, A.S., Dell, C.J., Kleinman, P.J. 2015. Linking nitrogen management, seep chemistry, and stream water quality in two agricultural headwater watersheds. Journal of Environmental Quality. 44(3):910-920.
Sensitivity analysis of the agricultural policy/environmental extender (APEX) for phosphorus loads in tile-drained landscapes Reprint Icon -
Ford III, W.I., King, K.W., Williams, M.R., Williams, J., Fausey, N.R. 2015. Sensitivity analysis of the agricultural policy/environmental extender (APEX) for phosphorus loads in tile-drained landscapes. Journal of Environmental Quality. 44:1099-1110. DOI:10.2134/jeq2014.12.0527.
What is causing the harmful algal blooms in Lake Erie? Reprint Icon -
Smith, D.R., King, K.W., Williams, M.R. 2015. What is causing the harmful algal blooms in Lake Erie? Journal of Soil and Water Conservation. 70(2):27A-29A.
Sensitivity analysis of the Ohio phosphorus risk index Reprint Icon -
Williams, M.R., King, K.W., Dayton, E., LaBarge, G. 2015. Sensitivity analysis of the Ohio phosphorus risk index. Transactions of the ASABE. 58(1):93-102.
Influence of riparian seepage zones on nitrate variability in two agricultural headwater streams -
Williams, M.R., Buda, A.R., Elliott, H.A., Singha, K., Hamlett, J. 2015. Influence of riparian seepage zones on nitrate variability in two agricultural headwater streams. Journal of the American Water Resources Association. 51(4): 883-897. doi: 10.1111/1752-1688.12335.
Drainage water management effects on tile dicharge and water quality -
Williams, M.R., King, K.W., Fausey, N.R. 2015. Drainage water management effects on tile dicharge and water quality. Agricultural Water Management. 148:43-51.
Drainage water management effects on tile discharge and water quality Reprint Icon -
Williams, M.R., King, K.W., Fausey, N.R. 2014. Drainage water management effects on tile discharge and water quality. Agricultural Water Management. 148:43-51.
Contributions of systematic tile drainage to watershed scale phosphorus transport Reprint Icon -
King, K.W., Williams, M.R., Fausey, N.R. 2014. Contributions of systematic tile drainage to watershed scale phosphorus transport. Journal of Environmental Quality. 44:486-494. DOI:10.2134/jeq2014.04.0149.
Phosphorus transport in agricultural subsurface drainage: A review -
King, K.W., Williams, M.R., Macrae, M.L., Fausey, N.R., Smith, D.R., Frankenberger, J., Kleinman, P.J., Brown, L.C. 2014. Phosphorus transport in agricultural subsurface drainage: A review. Journal of Environmental Quality. 44(2):467-85. doi:10.2134/jeq2014.04.0163.
Effect of subsurface drainage on streamflow in an agricultural headwater watershed Reprint Icon -
King, K.W., Fausey, N.R., Williams, M.R. 2014. Effect of subsurface drainage on streamflow in an agricultural headwater watershed. Journal of Hydrology. 519:438-445.
Groundwater flow path dynamics and nitrogen transport potential in the riparian zone of an agricultural headwater catchment -
Williams, M.R., Buda, A.R., Elliott, H., Hamlett, J., Boyer, E.W., Schmidt, J.P. 2014. Groundwater flow path dynamics and nitrogen transport potential in the riparian zone of an agricultural headwater catchment. Journal of Hydrology. 511:870-879.
Applying hydropedology to nutrient management in the northeastern US: lessons learned from the Mahantango Creek Experimental Watershed -
Buda, A.R., Williams, M.R., Folmar, G.J., Lin, H., Vitko, L.F., Kleinman, P.J., Bryant, R.B., Drohan, P.J. 2013. Applying hydropedology to nutrient management in the northeastern US: lessons learned from the Mahantango Creek Experimental Watershed [Abstract]. ASA-CSSA-SSSA Annual Meeting Abstracts. Paper No. 257-266.