An understanding of vadose zone hydrology is important for irrigation design and management as well as protecting water quality. Spatial variability in soil properties such as available water capacity and hydraulic conductivity affect the processes of infiltration, runoff, and deep percolation. Nonpoint source pollution from agricultural lands is a significant cause of environmental degradation in groundwater, streams, lakes, and oceans. An improved knowledge of the mechanisms of nutrient fate and transport will help inform best management practices.
Refereed Journal Articles
- Freiberger, R. P., D. M. Heeren, D. E. Eisenhauer, and G. A. Baigorria. 2017. Plot-scale simulation of nutrient leaching using single- and dual-porosity models. Vadose Zone Journal (in review).
- Heeren, D. M., G. A. Fox, C. J. Penn, T. Halihan, D. E. Storm, and B. E. Haggard. 2017. Impact of macropores and gravel outcrops on phosphorus leaching at the plot scale in silt loam soils. Transactions of the ASABE 60(3): 823-835, doi: 10.13031/trans.12015.
- Miller, R. B., D. M. Heeren, G. A. Fox, T. Halihan, and D. E. Storm. 2016. Heterogeneity influences on stream water-groundwater interactions in a gravel-dominated floodplain. Hydrological Sciences Journal 61(4): 741-750, doi: 10.1080/02626667.2014.992790.
- Heeren, D. M., G. A. Fox, and D. E. Storm. 2015. Heterogeneity of infiltration rates in alluvial floodplains as measured with a berm infiltration technique. Transactions of the ASABE 58(3): 733-745, doi: 10.13031/trans.58.11056.
- Penn, C. J., D. M. Heeren, G. A. Fox, and A. Kumar. 2014. Application of isothermal calorimetry to the study of phosphorus sorption onto soils in a flow-through system. Soil Science Society of America Journal 78(1): 147-156, doi: 10.2136/sssaj2013.06.0239.
- Miller, R. B., D. M. Heeren, G. A. Fox, T. Halihan, D. E. Storm, and A. R. Mittelstet. 2014. The hydraulic conductivity structure of gravel-dominated vadose zones within alluvial floodplains. Journal of Hydrology 513: 229-240, doi: 10.1016/j.jhydrol.2014.03.046.
- Heeren, D. M., G. A. Fox, and D. E. Storm. 2014. Technical note: Berm method for quantification of infiltration at the plot scale in high conductivity soils. Journal of Hydrologic Engineering 19(2): 457-461, doi: 10.1061/(ASCE)HE.1943-5584.0000802.
Other Relevant Products
Thesis: Freiberger, R. P. 2014. Single- and dual-porosity calibration and long-term modeling of highly conductive floodplain soils in the Ozark ecoregion. Lincoln, NE: University of Nebraska–Lincoln, Department of Biological Systems Engineering. (Advisor: Derek Heeren)
Invited Seminar: Heeren, D. M., R. P. Freiberger, G. A. Fox, D. E. Storm, C. J. Penn, T. Halihan, B. E. Haggard, R. B. Miller, A. R. Mittelstet, and D. A. Correll. 2013. Subsurface phosphorus transport and scale dependent phosphorus leaching in alluvial floodplains. U.S. Environmental Protection Agency (EPA) National Center for Environmental Research, Arlington, Va.