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Theses/Dissertations from 2016

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Restoration of the forest herbaceous layer: genetic differentiation, phenotypic plasticity, and opportunities for conservation and nursery professionals, Emily Anne Altrichter

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Stream channel erosion as a source of sediment and phosphorus in a central Iowa stream, Brian John Noonan

Theses/Dissertations from 2015

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Impacts of poultry manure application on bacteria and phosphorus in soils and drainage tile-waters, Claire Elise Klimala Hruby

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Sensible heat balance method to determine rates of soil freezing and thawing, Yuki Kojima

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Assessing the ecohydrological impact of incorporating perennial vegetation into an agricultural watershed in Central Iowa, USA, Vilma Salome Mateos Remigio

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Developing a decadal-scale stalagmite record of hydroclimate and atmospheric variability for western Iberia (Portugal) during the Late Holocene, Diana Lynn Thatcher

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A multiplex self-referencing detection of pathogens using surface enhanced raman scattering nanoprobes with a nano-DEP microfluidic concentrator, Chao Wang

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Exploring the relationship between attachment and antibiotic resistance of Escherichia coli from swine manure, Martha Reye Zwonitzer

Theses/Dissertations from 2014

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A carbon assessment of Iowa State University's land, Catherine Rosson DeLong

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Multifunctional agriculture: Root and nitrogen dynamics in two alternative systems, Alison King

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Corn production with Instinct nitrification inhibitor applied with urea-ammonium nitrate solution and liquid swine manure, Aaron Michael Sassman

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Classical gully spatial identification and slope stability modeling using high-resolution elevation and data mining technique, Laurimar Gonçalves Vendrusculo

Theses/Dissertations from 2013

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Nitrogen fertilization effects on soil organic carbon storage and aggregation mechanisms within continuous corn cropping systems, Kimberly Helen Brown

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Soil physical properties, soil carbon dioxide fluxes, and soil drainage dynamics of select bioenergy cropping systems, Aaron Lee Daigh

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Correction for rapid-growth vegetation and testing of an upscaling method with a COSMOS probe, Samantha Lou Irvin

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Biophysical interactions in prairie pothole wetlands of Iowa: consequences for macroinvertebrate assemblages and ecosystem condition, Kristine Maurer

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Pedogenesis of ant-colonized soils at Doolittle Prairie State Preserve, Iowa, Mary Lee Tiedeman

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Landscape, hydrological and social factors affecting water quantity and quality in urban headwater streams of central Iowa, Jiayu Wu

Theses/Dissertations from 2012

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Coupled heat, water, and solute transfer dynamics in wettable and non-wettable soils, Dedrick DeWaun Davis

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Impact of liquid swine manure on nutrient loss and bacteria transport to subsurface drainage water under corn-soybean rotations, Chi Kim Hoang

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Denitrification woodchip bioreactor two-phase column study: Evaluation of nitrate removal at various hydraulic retention times and effect of temperature on denitrification rates, Natasha Lynn Hoover

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Persistence and ecological implications of maize-expressed transgenic endo-1,4-β-D-glucanase (E1) in agricultural soils, Adam Joseph Kenny

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Impacts of long-term application of poultry manure on subsurface drain water quality, Huy Quang Nguyen

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The impacts of colloidal material on the fate and transport of 17 B-estradiol in three Iowa soils, Jacob Reed Prater

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Effects of native perennial vegetation buffer strips on dissolved organic carbon in surface runoff from an agricultural landscape, Tomorra Elizabeth Smith

Theses/Dissertations from 2011

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Estimation of change in soil water nitrate-nitrogen concentration using impedance spectra, Giorgi Chighladze

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An improvement on the management of biomass removal from vegetated channels and the methods used in runoff research, Henry Michael Wilson

Theses/Dissertations from 2010

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Occurrence of tylosin-resistant enterococci in swine manure and tile drainage systems under no-till management, Trang Thi Thu Hoang

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Fate of agrochemicals in wood chip denitrifying reactors and their impacts on wood chip microbial ecology, Zehra Esra Ilhan

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A study of the groundwater travel time distribution at a rural watershed in Iowa: A systems theory approach to groundwater flow analysis, Priyanka Jindal

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Soil erosion prediction for shaping conservation policy and practice, James Kenneth Newman

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Long-term effects of land application of poultry manure on crop production, and soil and water quality under a corn-soybean rotation system in Iowa, Huy Quang Nguyen

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Fifty years of agricultural soil change in Iowa, Jessica Veenstra

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Spatio-temporal patterns of field-scale soil moisture and their implications for in situ soil moisture network design, Lingyuan Yang

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Temperature sensitivity of soil organic matter decomposition and the influence of soil carbon pools and attributes, Jin Zhang

Theses/Dissertations from 2009

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Permeation of organic compounds through ductile iron pipe gaskets, Chu-lin Cheng

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Stream ecosystems in human-dominated landscapes: investigating land use impacts and integrating public participation, restoration, and research, Cassie J. Herringshaw

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Use of high-power ultrasound during soy protein production and study of its effect on functional properties of soy protein isolate, Bishnu Karki

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A modeling approach for operational flash flood forecasting for small-scale watersheds in central Iowa, William Scott Lincoln

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Monitoring and modeling of subsurface drainage and nitrate leaching under various land covers, Zhiming Qi

Theses/Dissertations from 2008

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A hydrogeologic investigation of Ada Hayden Lake in Ames, Iowa, Evan Gary Christianson

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A simulation assessment of the Boone River watershed: baseline calibration/validation results and issues, and future research needs, Philip Walter Gassman

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Nitrous oxide and methane fluxes in riparian buffers and adjacent crop fields, Dong-Gill Kim

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Monitoring Bear Creek nitrate-N flux and quantifying the impacts of concentrated flow on grass filters and riparian forest buffers, Keegan James Kult

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An assessment of riparian land-use and channel condition impacts on streambank eroding lengths and recession rates in two third order rural watersheds in Central Iowa, Jason Alan Palmer

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The effect of bio-char on soil properties and corn grain yields in Iowa, Rachel Colleen Unger

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Evaluation of ultrasonic pretreatment on anaerobic digestion of biomass for methane production, Wei Wu-haan

Theses/Dissertations from 2007

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Interaction of m-Dinitrobenzene (DNB) with Calcium and Potassium saturated reference smectites in aqueous suspensions, Ritushree Chatterjee

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Assessing estuarine health in Rookery Bay National Estuarine Research Reserve using a geochemical approach, Matthew Joseph Dvorak

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Soil management, crop rotations, and biomass removal effects on soil organic matter content, Krisztina Eleki

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Plumbing agricultural landscapes for water quality improvement: coexistence of intensive agriculture and good water quality, Zsolt Gemesi

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Effect of a hydrophobic layer on the upward movement of water under freezing conditions, Heath Gieselman

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Measurement of coupled soil heat and water processes, Joshua L. Heitman

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Effectiveness of naturally-occurring riparian forest buffers and grass filter strips at buffering concentrated flow from row crop fields to streams in northeast Missouri, Kris William Knight

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Modeling phosphorus transport using the WEPP model, Mario Perez-Bidegain

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Developing virtual watersheds for evaluating the dynamics of land use change, Sumit Sharma

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A joint probability approach for the confluence flood frequency analysis, Cheng Wang

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Vegetative filter strip buffer effects on runoff, sediment, and nutrient losses from a grazing and windrow composting site, David Franklin Webber

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Watershed planning in Central Iowa: an integrated assessment of the Squaw Creek Watershed for prioritization of conservation practice establishment, Ashley Anne Wendt

Theses/Dissertations from 2006

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Vegetative filter strip assessment in the state of Iowa, Manveen Bansal

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Reconstructing Quaternary landscapes and hydrology from soil survey maps, Bradley A. Miller

Theses/Dissertations from 2004

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Modeling surface soil and phosphorus transport using DSSAT models , Mohamud Hussein Egeh

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Using surface solute transport properties measured by time domain reflectometry to predict subsurface leaching , Anju Gaur

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Riparian land-use impacts on stream and gully bank soil and phosphorus losses with an emphasis on grazing practices , George Nick Zaimes

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Using rainfall simulation, TDR, and tracer anions to determine effects of soil properties on nitrate leaching , Jian Zhou

Theses/Dissertations from 2001

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Field estimation of soil hydraulic and chemical transport properties , Salem Ali Matar Al-Jabri

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Quantitation of bound pesticide residues in field and wetland soils , Larry Warren Wulf

Theses/Dissertations from 2000

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The study and modeling of atrazine fate in buffer strips soil , Alissara Reungsang

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Effects of liquid swine manure placement and rate on phosphorus loss with runoff water , Hadi Tabbara

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Effects of swine manure management on bacterial quality of subsurface drainage , Elizabeth Anne Warnemuende

Theses/Dissertations from 1999

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A decision support system for planning and management of sustainable livestock production in the Midwest, Irene Mary Crawford

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Spatio-temporal modeling in an agricultural watershed , Shabana Hameed

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Soil testing and plant analysis to optimize nitrogen management in manured cornfields , David Jay Hansen

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Characterization of preferential solute transport in soil , Jaehoon Lee

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Effects of variable rates, times and methods of application of swine manure on nitrate-nitrogen in subsoil water, crop yields, N uptake and recovery and soil residual nitrate-nitrogen: a three year study , Sara Dominga Smith

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Heat storage and atmospheric heat and moisture fluxes from mid-latitude isolated inhomogeneities , Michael Ralph Taber

Theses/Dissertations from 1998

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Simulation modeling and visualization of hydrologic response of an agricultural watershed , Fulbert Leon Namwamba

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An integrated assessment of watershed land use impacts on aquatic ecosystem integrity, Sarah Marie Stratton

Theses/Dissertations from 1997

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Infiltration in a Coland clay loam under a six-year old multi-species riparian buffer strip, cultivated row crops and continuously grazed pasture, Luna Bharati

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Nitrate removal capacity of constructed wetlands , Richard Gregory Phipps

Theses/Dissertations from 1996

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Development of an integrated watershed-scale surface hydrologic modeling environment using ARC/INFO GIS, Chi-Chuan Chen

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Effects of emergent vegetation on wetland microbial processes , Charles Lee Rose

Theses/Dissertations from 1995

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Assessment of the fate and transport of nitrate in groundwater within the Walnut Creek watershed, Beth Lynn Johnson

Theses/Dissertations from 1993

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Evaluation of techniques for establishing sedge meadow vegetation, Tony Lee Bremholm

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Sorption kinetics of atrazine and hydroxyatrazine in freshwater wetlands, Michael Patrick Matter

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A preliminary hydrogeological assessment of a constructed multispecies riparian buffer strip near Roland, Iowa, William John Ryan

Theses/Dissertations from 1992

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Transformation and fate of nitrate in northern prairie wetlands , Thomas Matthew Isenhart

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Fertilizer fate under golf course conditions in the midwestern region, Steven Kent Starrett

Theses/Dissertations from 1990

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Atrazine and nitrate leaching through soil columns as affected by conservation tillage, Patricia Lee Boddy

Theses/Dissertations from 1989

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A two-dimensional boundary element groundwater model , Mark Allen Liebe

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Sorption and transport of atrazine, alachlor and fluorescent dyes in alluvial aquifer sands , David Alan Sabatini

Theses/Dissertations from 1988

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Development of a two-dimensional finite element soil-moisture flow model , Mushtaque Ahmed

Theses/Dissertations from 1987

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Groundwater flow theory for perforations in well casings and soil drain tubes , Fadel Musa Hashem

Theses/Dissertations from 1986

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A stochastic analysis of pollutant movement in groundwater , Kevin K. Wolka

Theses/Dissertations from 1985

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A finite element stream-aquifer model , Robert Sidney Carr

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Stochastic modeling of water movement in the saturated-unsaturated zone , Sang-Ok Chung

Theses/Dissertations from 1982

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Management of a gravel-pit lake system to optimize future water quality , Larry Michael Antosch

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The effects of Saylorville Reservoir and the Raccoon River on selected water quality parameters of the Des Moines River, David Paul Bierl

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Remote sensing of land resources: application of LANDSAT satellite imagery , Jahanshir Golchin

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Public management of on-site wastewater treatment systems in Iowa , Karen Marie Mancl