A5037067054- Hydrology and Watershed Management Studies
- Soil erosion and sediment transport
- Urban Stormwater Management Solutions
- Flood Risk Assessment and Management
- Rangeland and Wildlife Management
- Plant Water Relations and Carbon Dynamics
- Hydrology and Drought Analysis
- Land Use and Ecosystem Services
- Climate variability and models
- Remote Sensing in Agriculture
- Microbial bioremediation and biosurfactants
- Hydrology and Sediment Transport Processes
- Soil and Unsaturated Flow
- Soil Moisture and Remote Sensing
- Meat and Animal Product Quality
- Groundwater flow and contamination studies
- Pesticide and Herbicide Environmental Studies
- Interdisciplinary Research and Collaboration
- Soil and Water Nutrient Dynamics
- Precipitation Measurement and Analysis
- Smart Materials for Construction
- Bioenergy crop production and management
- Water Systems and Optimization
- Constructed Wetlands for Wastewater Treatment
- Remote Sensing and LiDAR Applications
Kansas State University
2015-2025
University of Wisconsin–Madison
2024
Arkansas Agricultural Experiment Station
2007
Manhattan High School
2004
University of Alberta
2004
National Fire Protection Association
1920
Eli and Edythe Broad Foundation
1920
Columbia University
1920
University of Washington
1920
University of Pennsylvania
1920
Future climates are forecast to include greater precipitation variability and more frequent heat waves, but the degree which timing of climate impacts ecosystems is uncertain. In a temperate, humid grassland, we examined seasonal on 27 y grass productivity. Drought high-intensity reduced productivity only during 110-d period, whereas high temperatures 25 d in July. The effects drought waves declined over season had no detectable impact August. If these patterns general across ecosystems,...
Phytoremediation is a promising new technology that uses higher plants to enhance biodegradation. Nutrient availability an important factor governing the success of phytoremediation and can be regulated through addition fertilizer. A greenhouse study was conducted assess importance nitrogen phosphorus for petroleum sludge. Degradation total hydrocarbons (TPH) quantified six fertilization rates three vegetation treatments: bermuda grass [Cynodon dactylon (L.) Pers.], tall fescue (Festuca...
Abstract: Riparian buffer forests and vegetative filter strips are widely recommended for improving surface water quality, but grass‐shrub riparian system (RBSs) less well studied. The objective of this study was to assess the influence width vegetation type on key processes overall reductions total suspended solids (TSS), phosphorus (P), nitrogen (N) from simulated runoff passed through established (7‐year old) RBSs. Nine 1‐m RBS plots, with three replicates types (all natural selection...
Frost indices such as number of frost days (nFDs), frost-free (nFFDs), last spring freeze (LSF), first fall (FFF), and growing-season length (GSL) were calculated using daily minimum air temperature (Tmin) from 23 centennial weather stations across Kansas during four time periods (through 1919, 1920–1949, 1950–1979, 1980–2009). A day is defined a with Tmin < 0 °C. The long- short-term trends in analyzed at monthly, seasonal, annual timescales. Probability occurrence the was 5 %, 25 50 75 95...
This study aimed to determine the well-being outcomes and quality of work environment among emergency nurses compared with inpatient working in Magnet hospitals identify recommendations department environments that hold promise for enhancing nurses' well-being.
Antibiotics used in the swine industry to treat diseases and improve animal growth are poorly absorbed by have been classified as micropollutants due their occurrence surface water, wastewater, soil. This study investigated capacity of biochar produced from eastern red cedar remove target antibiotics that extensively industry. Biochar was pyrolysis at 450 °C. The sorption tests were performed mixing a solution (1:10 ratio) containing each antibiotic 100, 300, 600, 900 μg L-1 concentrations....
ABSTRACT Precipitation directly impacts agricultural production, water resources management, and recreational activities, all of which significantly affect a state's economy. As the human population increases, demand for escalates due to its crucial role in health food production. The question then becomes, can current management strategies ensure sustainable access clean water, maintain supplies, permit industrial uses given changing climate? Developing solid understanding rainfall patterns...
ABSTRACT The use of higher plants to accelerate the remediation petroleum contaminants in soil is limited by, among other factors, rooting depth and delivery nutrients microsites at which occurs. objective this study was test methods enhancing root growth subsurface a contaminated sludge. phytoremediation highly sludge (total hydrocarbons >35 g kg −1 ) tested greenhouse as function frequency irrigation fertilization. Water dissolved plant were added surface or 30 cm, either daily weekly....
Appropriate environmental management of pesticides includes their proper application, use filter strips and riparian buffers to contain in runoff from fields, prompt cleanup spills, treatment processes for wastewater associated with manufacturing equipment usage. Plants have beneficial effects the pesticide-contaminated soil water, including direct metabolism many pesticides, stimulation microbial activity root zone, extraction contaminated reduction infiltrating water. In this work, we...
Climate variability and change can impact rainfall by varying time, location, magnitude, frequency of precipitation events. Fluctuations in heavy events flooding drought water management systems. This research addresses temporal spatial distributions extreme daily monthly Kansas using data from 23 stations for the period 1890–2013. The Mann–Kendall non‐parametric method was used trend analysis. Results indicate an increasing annual maximum rainfall, increase number above 90th, 95th, 99th...
ABSTRACT Extended periods with excessive or no rainfall high low temperatures have important implications on the water cycle, can stress ecosystems and be detrimental to economy of a region. These are generally studied using spell length indicators duration indices ( SDIs ). Fourteen calculated study changes in wet/dry/warm/cold spells daily precipitation maximum minimum air temperature from 23 centennial weather stations spread across Kansas during four time (through 1920, 1921–1950,...
Abstract The oil industry contributes to contamination of groundwater and aquifers beneath refineries terminals. successful remediation a contaminated site requires understanding both the hydrogeology nature extent contamination. physical–chemical biological mechanisms that govern contaminant release, transport fate in soils, sediments, associated fluid phases must be understood quantified. In addition, flow entrapment nonaqueous phase liquids (NAPLs) including lighter‐than‐water (LNAPLs) is...
Interactions between bacteria and soil particles influence retention transport in the matrix and, consequently, bacterial contamination of water resources. The objective this study was to quantify sorption desorption Escherichia coli silt loam sand by evaluating suspensions with a range sorbent concentrations. Three isotherms were assessed. Soil or (1, 10, 20 g) added 50 mL E. solution (103, 105, 106, 107 colony forming units per milliliter, cfu/mL). concentration differences centrifuged...
The Rainfall Frequency Atlas (TP40) was last updated for Kansas in 1961, using weather data from 1911 to 1958. information contained the atlas is basis important engineering and hydrologic design decisions state. With growing concern about effects of global climate change predictions more extreme events, it necessary explore rainfall distribution patterns most current complete available. In this study, frequency analyzed daily precipitation (1920–2009) 24 stations 15 adjacent states. Weibull...
The Soil Conservation Service Curve Number (SCS-CN, or CN) is a widely used method to estimate runoff from rainfall events. It has been adapted many parts of the world with different land uses, cover types, and climatic conditions successfully applied situations ranging simple calculations use change assessment comprehensive hydrologic/water quality simulations. However, CN lacks ability incorporate seasonal variations in vegetated surface conditions, unnoticed landuse/landcover (LULC) that...
Abstract Overcoming Limitations of Ecology and Engineering in Addressing Society’s Challenges By providing an integrated, systems-approach to problem-solving that incorporates ecological principles engineering design, addresses, many the limitations needed work out how people nature can beneficially coexist on planet Earth. Despite its origins 1950s, remains a niche discipline, while at same time, there has never been greater need combine rigour science with ecology for pro-active management...
Estimates of the USDA-NRCS runoff curve number (CN) are generally based on a soil map and observed land cover. Because CN method is increasingly applied to disturbed urbanized land, objective this work was collect effective saturated hydraulic conductivities, Ksat, sorptivities, So, from range use types, results estimate CN, compare these CNs with estimates made survey information corresponding A total 331 double ring infiltration tests were conducted over 15 sites. Based site history, test...