Peer-Reviewed Publications
- Christianson, L., A. Castelló, R. Christianson, A. Bhandari, and M. Helmers. 2010. Technical note: Hydraulic property determination of denitrifying bioreactor fill media. Applied Engineering in Agriculture 26(5): 849‐854.
- Christianson, L., A. Bhandari, and M. Helmers. 2011. Pilot-scale evaluation of denitrification drainage bioreactors: Reactor geometry and performance. Journal of Environmental Engineering 137(4): 213-220.
- Christianson, L., J. Hanly, and M. Hedley. 2011. Optimized denitrification bioreactor treatment through simulated drainage containment. Agricultural Water Management 99(1):85-92.
- Christianson, L., and J. Tyndall. 2011. Seeking a dialog: A targeted technology for sustainable agricultural systems in the American Corn Belt. Sustainability: Science, Practice, & Policy 7(2). Available at: http://sspp.proquest.com/archives/vol7iss2/communityessay.christianson.html.
- Christianson, L., A. Bhandari, M. Helmers, K. Kult, T. Sutphin, and R. Wolf. 2012. Performance evaluation of four field-scale agricultural drainage denitrification bioreactors in Iowa. Transactions of the ASABE 55(6): 2163-2174.
- Christianson, L., A. Bhandari, and M. Helmers. 2012. A practice-oriented review of woodchip bioreactors for subsurface agricultural drainage. Applied Engineering in Agriculture 28(6): 861-874.
- Christianson, L., N. Hoover, A. Bhandari, and M. J. Helmers. 2012. Technical Note: The potential of municipal yard waste to be denitrification bioreactor fill. Applied Engineering in Agriculture 28(6): 853-859.
- Christianson, L., R. Christianson, M. Helmers, C. Pederson, and A. Bhandari. 2013. Modeling and calibration of drainage denitrification bioreactor design criteria. Irrigation and Drainage Engineering 139(9): 699-709.
- Christianson, L. M. Helmers, A. Bhandari, and T. Moorman. 2013. Internal hydraulics of an agricultural drainage denitrification bioreactor. Ecological Engineering 52: 298-307.
- Christianson, L., M. Smith, D. Storm, M. White, S. Stoodley. 2013. Evaluating Remote Sensing Methods for Targeting Erosion in Riparian Corridors. Proceedings of the Oklahoma Academy of Science, 93: 55-65.
- Christianson, L., J. Tyndall, and M. Helmers. 2013. Financial comparison of seven nitrate reduction strategies for Midwestern agricultural drainage. Water Resources and Economics 2-3:30-56.
- Christianson, L., T. Knoot, D. Larsen, J. Tyndall, and M. Helmers. 2014. Adoption potential of nitrate mitigation practices: an ecosystem services approach. International Journal of Agricultural Sustainability 12(4): 407-424.
- Christianson, L., and S. Summerfelt. 2014. Fluidization velocity assessment of commercially available sulfur particles for use in autotrophic denitrification biofilters. Aquacultural Engineering 60:1-5.
- Christianson, L., and R. Harmel. 2015. The MANAGE Drain Load database: Review and compilation of more than fifty years of North American drainage nutrient studies. Water Management 159:277-289.
- Feyereisen, G., and L. Christianson. 2015. Hydraulic flow characteristics of agricultural residues for denitrifying bioreactor media. Applied Engineering in Agriculture 31(1): 89-96.
- Tsukuda, S., L. Christianson, K. Saito, A. Kolb, and S. Summerfelt. 2015. Heterotrophic denitrification of aquaculture effluent using fluidized sand biofilters. Aquacultural Engineering 64:49-59.
- Christianson, L., and R. Harmel. 2015. 4R water quality impacts: An assessment and synthesis of forty years of drainage nitrogen losses. Journal of Environmental Quality 44(6):1852-1860.
- Christianson, L., C. Lepine, S. Tsukuda, K. Saito, and S. Summerfelt. 2015. Nitrate removal effectiveness of fluidized sulfur-based autotrophic denitrification biofilters for recirculating aquaculture systems. Aquacultural Engineering 68:10-18.
- Christianson, L. and L. Schipper. 2016. Moving denitrifying bioreactors beyond proof of concept: Introduction to the special section. Journal of Environmental Quality 45(3): 757-761.
- Addy, K., A. Gold, L. Christianson, M. David, L. Schipper, and N. Sacha. 2016. Denitrifying Bioreactors for Nitrate Removal: A Meta-analysis. Journal of Environmental Quality 45(3): 873-881.
- Feyereisen, G., T. Moorman, L. Christianson, R. Venterea, J. Coulter, U. Tschirner. 2016. Performance of agricultural residue media in laboratory denitrifying bioreactors at low temperatures. Journal of Environmental Quality 45(3): 779-787.
- Sharrer, K., L. Christianson, C. Lepine, and S. Summerfelt. 2016. Modeling and mitigation of denitrification ‘woodchip’ bioreactor phosphorus releases during treatment of aquaculture wastewater. Ecological Engineering 93:135-143.
- Lepine, C., L. Christianson, K. Sharrer, and S. Summerfelt. 2016. Optimizing hydraulic retention times in denitrifying woodchip bioreactors treating recirculating aquaculture system wastewater. Journal of Environmental Quality 45(3): 813-821.
- Christianson, L., C. Lepine, K. Sharrer, and S. Summerfelt. 2016. Denitrifying bioreactor clogging potential during wastewater treatment. Water Research 105:147-156.
- Harmel, R., L. Christianson, M. McBroom, D. Smith, and K. Higgs. 2016. Expansion of the MANAGE database with forest and drainage studies. Am. Water Res. Assoc’n. 10.1111/1752-1688.12438.
- Christianson, L., R. Harmel, D. Smith, M. Williams, and K. King. 2016. Assessment and synthesis of 50 years of published drainage phosphorus losses. Journal of Environmental Quality 45(5):1467-1477.
- Zhao, X., L. Christianson, D. Harmel, and C. Pittelkow. 2016. Assessment of drainage nitrogen losses on a yield-scaled basis. Field Crops Research 199:156-166.
- Rosen, T. and L. Christianson. 2017. Performance of denitrifying bioreactors at reducing agricultural nitrogen pollution in a humid subtropical coastal plain environment. Water 9(2):112.
- Christianson, L., D. DeVallance, J. Faulkner, and T. Basden. 2017. Scientifically advanced woody media for improved water quality from livestock woodchip heavy-use areas. Frontiers of Environmental Science and Engineering 11:2 doi:10.1007/s11783-017-0909-7.
- Feyereisen, G., L. Christianson, T. Moorman, R. Venterea, and J. Coulter. 2017. Plastic biofilm carrier after corn cobs reduces nitrate loading in laboratory denitrifying bioreactors. Journal of Environmental Quality 46:915-920 doi: 10.2134/jeq2017.02.0060.
- Christianson, L., C. Lepine, P. Sibrell, C. Penn, and S. Summerfelt. 2017. Denitrifying woodchip bioreactor and phosphorus filter pairing to minimize pollution swapping. Water Research 121:129-139 doi.org/10.1016/j.watres.2017.05.026.
- Eagle, A., R. Cook, L. Christianson, D. Harmel, F. Miguez, S. Qian, D. Diaz. 2017. Meta-analysis constrained by data: Recommendations to improve relevance of nutrient management research. Agronomy Journal 109(6):2441-2449. doi: 10.2134/agronj2017.04.0215.
- Christianson, L., A. Collick, R. Bryant, T. Rosen, E. Bock, A. Allen, P. Kleinman, E. May, and Z. Easton. 2017. Enhanced denitrification bioreactors hold promise for Mid-Atlantic ditch drainage. Agricultural & Envir. Letters 2:170032. doi: 10.2134/ael2017.09.0032.
- Christianson, R., L. Christianson, C. Wong, M. Helmers, G. McIsaac, D. Mulla, and M. McDonald. 2018. Beyond the nutrient strategies: Common ground to accelerate water quality improvement in the Upper Midwest. Journal of Environmental Management 206:1072-1080.
- Li, S., R. Cooke, X. Huang, L. Christianson, and R. Bhattarai. 2018. Evaluation of fly ash pellets for phosphorus removal in a laboratory scale denitrifying bioreactor. Journal of Environmental Management 207:269-275.
- Lepine, C., L. Christianson, J. Davidson, and S. Summerfelt. 2018. Woodchip bioreactors as treatment for recirculating aquaculture systems’ wastewater: A cost assessment of nitrogen removal. Aquacultural Engineering 83:85-92
- Christianson, L., G. Feyereisen, C. Lepine, and S. Summerfelt. 2018. Plastic carrier polishing chamber reduces pollution swapping from denitrifying woodchip bioreactors. Aquacultural Engineering 81:33-37.
- Maxwell, B., F. Birgand, L. Schipper, L. Christianson, S. Tian, M. Helmers, D. Williams, G. Chescheir, and M. Youssef. 2019. Impact of drying-rewetting cycles on nitrate removal rates in woodchip bioreactors. Journal of Environmental Quality 48(1):93-101.
- Chandrasoma, J.M., R.D. Christianson, and L.E. Christianson. 2019. Saturated buffers: What is their potential impact across the US Midwest? Agricultural & Environmental Letters 4: 180059. doi: 10.2134/ael2018.11.0059.
- Preza Fontes, G., R. Bhattarai, L. Christianson, and C. Pittelkow. 2019. Combining environmental monitoring and remote sensing technologies to evaluate cropping system nitrogen dynamics at the field-scale. Frontiers in Sustainable Food Systems 3(8) doi: 10.3389/fsufs.2019.00008.
- Hertzberger, A., C.M. Pittelkow, R.D. Harmel, and L.E. Christianson. 2019. The MANAGE Drain Concentration database: A new tool compiling North American drainage nutrient concentrations. Agricultural Water Management 216:113-117.
- Ezzati, G., M.G. Healy, L.E. Christianson, G.W. Feyereisen, S. Thornton, K. Daly, and O. Fenton. 2019. Developing and validating a decision support tool for media selection to mitigate drainage waters. Ecological Engineering X: 2. https://doi.org/10.1016/j.ecoena.2019.100010.
- Maxwell, B., F. Birgand, L. Schipper, L. Christianson, S. Tian, M. Helmers, D. Williams, G. Chescheir, and M. Youssef. 2019. Increased duration of drying-rewetting cycles increases nitrate removal in woodchip bioreactors. Agricultural & Environmental Letters. doi:10.2134/ael2019.07.0028.
- Christianson, L.E., R.D. Christianson, A.E. Lipka, S. Bailey, J. Chandrasoma*, C. McCoy*, G. Preza Fontes*, J. Roh*, A.P. Sanchez Bustamante Bailon*, N. Wickramarathne*, and R.A. Cooke. 2019. Calibration of stainless steel-fronted v-notch weir stop logs for water level control structures. Applied Engineering in Agriculture 35(5): 745-749.
- Hertzberger, A.J., C.M. Pittelkow, R.D. Harmel, and L.E. Christianson. 2019. Analysis of the MANAGE Drain Concentration database to evaluate agricultural management effects on drainage water nutrient concentrations. Transactions of the ASABE 62(4):929-939.
- Lepine, C., L. Christianson, G. McIssac, and S. Summerfelt. In Press 2019. Denitrifying bioreactor inflow manifold design influences treatment of aquacultural wastewater. Aquacultural Engineering. https://doi.org/10.1016/j.aquaeng.2019.102036.
- Daly, K., G. Ezzati, O. Fenton, M.G. Healy, L. Christianson, G. Feyereisen, S. Thornton, Q. Chen, B. Fan, and J. Ding. 2020. Impact of P inputs on source-sink P dynamics of sediment along an agricultural ditch network. Journal of Environmental Management 257:109988. doi: 10.1016/j.jenvman.2019.109988.
- Li, S., R. Bhattarai, R. Cooke, S. Verma, X. Huang, M. Markus, and L. Christianson. 2020. Relative performance of different data mining techniques for nitrate concentration and load estimation in different type of watersheds. Environmental Pollution 263A: 114618. https://doi.org/10.1016/j.envpol.2020.114618.
- Christianson, L.E., G.W. Feyereisen, C.H. Hay, U.W. Tschirner, K. Kult, N. Wickramarathne, N.L. Hoover, and M.L. Soupir. 2020. Denitrifying bioreactor woodchip recharge: Media properties after 9 years. Transactions of the ASABE in press.
Non-Peer Reviewed Outreach Publications Available Online
- Christianson, L., and M. Helmers. 2011. Woodchip bioreactors for nitrate in agricultural drainage. Iowa State University Extension Publication PMR 1008 (double blind expert-reviewed). Available at: https://store.extension.iastate.edu/ItemDetail.aspx?ProductID=13691.
- Christianson, L. 2016. Nutrient loss reduction: Using science to find the right practices for your field. Illinois Extension and Illinois Water Resources Center (4-pg factsheet). Available at: http://go.illinois.edu/UseScience.
- Christianson, L., J. Frankenberger, C. Hay, M. Helmers, and G. Sands (Eds.). 2016. Ten ways to reduce nitrogen loads from drained cropland in the Midwest. Urbana, IL: Illinois Extension. (Open peer review). Available at: http://go.aces.illinois.edu/TenWays.
- Hertzberger, A. and L. Christianson. 2018. Concentrating on nutrient loss: A review of tile drainage nutrient concentrations. University of Illinois Extension, Urbana, Illinois (2-pg factsheet).
- Christianson, L., J. Frankenberger, C. Hay, M. Helmers, and G. Sands. 2018. Ten ways to reduce nitrogen loads from drained cropland in the Midwest: A summary factsheet. University of Illinois Extension, Urbana, Illinois (4-pg factsheet).
- Christianson, L., K. Addy, A. Gold, and L. Schipper. 2018 Woodchip Bioreactors: A science-based option to reduce nitrate loss. University of Illinois Extension, Urbana, Illinois (2-pg factsheet).
- Woodyard, J., L. Christianson, C. Penn, M. Kalcic, K. W. King, M. R. Williams, M. L. Macrae, Fausey, J. Frankenberger, D. R. Smith, P. J. A. Kleinman, and L. C. Brown. 2020. Solutions to minimize phosphorus loss through subsurface tile drains. University of Illinois Extension factsheet CSWQ-0120. Available at: https://go.illinois.edu/TilePLoss.