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I joined the University of Arizona Water Resources Research Center (WRRC) in November 2011 after a 10-year career with the USDA-Agricultural Research Service. As Associate Director of the WRRC, I contributed to human resource management, including supervision of staff and leading committees for staff searches; additional duties included planning and execution of fundraising; long-term strategic planning and reporting of metrics; and chairing committees for organizing the WRRC Annual Conferences and other events involving water management professionals, elected officials, and WRRC stakeholders.
My research program is directed towards establishing impacts of anthropogenic stressors on microbiological presence and function in soil and water and identifying linkages between microbes in the natural environment and human health. Recent studies include examining the potential for trace contaminants in degraded irrigation water and biosolids to induce development of antibiotic resistance in bacteria; and performing molecular and cultural analyses of bacterial regrowth, survival, and transport in irrigation water and soils to establish links to fresh produce safety.
Since 2017 I have been teaching a formal technical writing course, "Scientific Writing for the Environmental, Agricultural, and Life Sciences." This course, traditionally taught in the fall, expanded to include a spring session in 2019, for a total of 6 teaching credits per year. This course is taught at both undergraduate (ENVS 408) and graduate (ENVS 508) levels.
In 2018, I left my administrative role at the WRRC to assume a position as Assistant Dean for Faculty Advancement in the College of Agriculture and Life Sciences. In this position, my responsibilities include working with faculty, unit heads, and faculty governance teams in solving problems and identifying opportunities that will enhance faculty success. My duties include coordination of college-level review of promotion and tenure/continuing status, administering the annual faculty review processes, coordinating post-tenure reviews, addressing faculty grievances, and facilitating multiple programs focused on ensuring faculty advancement.Show Less
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Courses
- SWEALSScientific Writing for Environmental, Agricultural and Life Sciences
Grants
- Bringing Microbiology and Water Quality to Arizona Classrooms: Workforce Development through Teacher Training
Principal Investigator (PI)
2019
$150.0K
- Science-Based Interventions for Water Contamination
Co-Investigator (COI)
2018
$88.4K
- Small/Medium Size Farm FSMA Preparedness
Co-Investigator (COI)
2018
$76.0K
- mTEC Evaluation for E. coli Detection
Principal Investigator (PI)
2017
$91.6K
- Advancing Informal Environmental STEM Literacy & Learning: Co-Created Citizen Science Rainwater Harvesting in Underserved Communities
Co-Investigator (COI)
2016
$2.3M
- Creation of Self-Sterilizing Irrigation Pipelines
Principal Investigator (PI)
2015
$75.5K
- Occurrence, Proliferation, and Persistence of Antibiotics and Antibiotic Resistance During Wastewater Treatment
Co-Investigator (COI)
2015
$63.0K
- Developing a Sustainable Seafood Industry Infrastructure in Myanmar
Co-Investigator (COI)
2014
$1.7M
- Creation of Self-Sterilizing Harvesting Tools
Principal Investigator (PI)
2014
$73.4K
- Collaborative Research: Relative Abundance and Diversity of Antibiotic Resistance Genes and Pathogens in Reclaimed Versus Potable Water Distribution S
Principal Investigator (PI)
2014
$35.0K
News
- Super Bowl's Super Flush: Just a Super Myth?
2017
- Project Addresses Food Safety for Southern Arizona Families
2016
- UA Aids Myanmar's Seafood Industry
2015
- Global Experts in Antibiotic Resistance to Attend Workshop at UA
2014
- Testing Water for Antibiotic-Resistant Bacteria
2014
- UA Team Evaluating Relationship Between Roadways, Restoration
2009
Publications (75)
Recent
- Evaluation of total Bacteroides sp. as an alternative indicator in agricultural water quality
2021
- Human and ecological health risk modeling frameworks for environmental sources of AMR: toward quantitative risk predictions
2021
- Crayfish (Cherax quadricarinatus) susceptibility to acute hepatopancreatic necrosis disease (AHPND)
2021
- Are heavy metals agents of antibiotic resistance in aquaponics systems?
2021
- Comparing microbial risks from multiple sustainable waste streams applied for agricultural use: biosolids, manure, and diverted urine
2020
- Review of the FDA Food Safety Modernization Act (FSMA) Agriculture Water Rule: implications for irrigated produce, water reuse, quantitative microbial risk assessment, and food safety
2019
- Partnering for action: community monitoring of harvested rainwater in underserved, rural, and urban Arizona communities
2019
- Communicating research results to stakeholders: what we can learn from Cooperative Extension
2018
- Communicating research results to stakeholders: what scientists can learn from Cooperative Extension
2018
- AZ1763: E. coli, Water Quality, Food Safety, and Human Health
2018
- Review of water quality criteria for water reuse and risk-based implications for irrigated produce under the FDA Food Safety Modernization Act, Produce Safety Rule
2018
- AZ1767: E. coli Prevention and Control in Fresh Produce from Farm-to-Fork
2018
- E. coli Prevention and Control in Fresh Produce from Farm-to-Fork
2018
- Accumulation of heavy metals and their effects on antibiotic resistance of bacteria in an aquaponics system
2018
- Metagenomic characterization of antibiotic resistance genes in full-scale reclaimed water distribution systems and corresponding potable systems
2018
- Microbial ecology and water chemistry impact regrowth of opportunistic pathogens in full-scale reclaimed water distribution systems
2018
- Increasing Environmental Health Literacy through Contextual Learning in Communities at Risk
2018
- Compost Tea 101: What Every Organic Gardener Should Know
2017
- Searching for antibiotic resistance genes in a pristine arctic wetland
2017
- Solids retention time, influent antibiotic concentrations, and temperature as selective pressures for antibiotic resistance in activated sludge systems
2017
- Impacts of solids retention time on trace organic compound attenuation and bacterial resistance to trimethoprim and sulfamethoxazole
2017
- Culture-based methods for detection of antibiotic resistance in agroecosystems: advantages, challenges, and gaps in knowledge
2016
- Potable Reuse of Water: A View from Arizona
2016
- Arizona agriculture using recycled water
2016
- A tool box strategy using Bacteroides genetic markers to identify microbial sources in natural waters
2016
- Antibiotics in Agroecosystems: Introduction
2016
- Antibiotics and antibiotic resistance in agroecosystems: state of the science
2016
- Perspectives on research in water
2015
- Interfacial effects revolutionize qPCR by low threshold cycle detection and inhibition relief
2015
- Extracellular Trapping of Soil Contaminants By Root Border Cells: New Insights into Plant Defense
2015
- Agricultural use of recycled water for crop production
2015
- Sustainability of water reclamation: Long-term recharge with reclaimed wastewater does not enhance antibiotic resistance in sediment bacteria
2014
- Engineered Nanomaterials Inhibit or Improve Biological Carbon Conversion in Soils
2014
- Presence of antibiotics and antibiotic resistance at Penn State's Living Filter: a wastewater renovation site
2014
- Assessing fecal contamination in groundwater from the Tulum Region, Quintana Roo, Mexico
2013
- Antibiotic effects on microbial community characteristics in soils under conservation management practices
2013
- Integrity and ethics: meeting the career challenges that lie ahead
2013
- Dinner for six at the annual meetings
2013
- Isolation of bacteroides from fish and human fecal samples for identification of unique molecular markers
2013
- Infrared warming affects intrarow soil CO2 efflux during vegetative growth of spring wheat
2013
- Temporal patterns and controls on runoff magnitude and solution chemistry of urban catchments in the semiarid southwestern United States
2013
- Influence of residence time of reclaimed water within distribution systems on water quality
2013
- Research promoting safe and sustainable water reuse at the University of Arizona
2012
- Quantifying the effects of stream channels on storm water quality in a semi-arid urban environment
2012
- Common terminology of water recycling
2012
- Land cover controls on summer discharge and runoff solution chemistry of semi-arid urban catchments
2012
- The effects of veterinary antibiotics on soil microbial community characteristics in vegetative filter strips and cropland soils
2012
- Outcomes of WateReuse Foundation project 08-04: approaches to maintain consistently high quality recycled water in storage and distribution systems
2012
- Environmental releases of engineered nanomaterial resulting from biosolids disposal to land and air
2012
- The decision process in changing jobs
2012
- US agricultural nitrous oxide emissions: Context, status, and trends
2012
- Trends in bacterial antibiotic resistance in soils following long-term biosolids application
2012
- Greenhouse gas flux from managed grasslands in the U.S
2012
- U.S. agricultural N2O emissions: context, status, and trends
2012
- Soil microbial activity elucidates unique soil carbon transport patterns within resource islands on semi-arid hillslopes
2012
- Soil persistence and fate of carbamazepine, lincomycin, caffeine, and ibuprofen from wastewater reuse
2012
- Assessing environmental impacts of treated wastewater through monitoring of fecal indicator bacteria and salinity in irrigated soils
2012
- Communicating your talents to prospective employers: effective presentation techniques
2012
- Arizona blue ribbon panel on water sustainability.
2012
- Water recycling FAQs
2012
- Minimal production of algal toxins in recycled wastewater retention ponds
2012
- Does increasing solids retention time in the wastewater treatment process affect the persistence of antibiotic resistance genes?
2012
- The use of Bacteroides specific molecular markers to identify sources of fecal contamination in natural waters
2011
- Irrigation Waters as a Source of Pathogenic Microorganisms in Produce. A Review
2011
- Development of antibiotic resistance in bacteria of soils irrigated with reclaimed wastewater
2010
- Lack of specificity for PCR assays targeting human Bacteroides 16S rRNA gene: Cross-amplification with fish feces
2009
- Increased moisture and methanogenesis contribute to reduced methane oxidation in elevated CO sub 2 /sub soils
2008
- Seasonal variation in accurate identification of Escherichia coli within a constructed wetland receiving tertiary-treated municipal effluent
2008
- N sub 2 /sub O production by heterotrophic N transformations in a semiarid soil
2006
- Moisture controls on trace gas fluxes in semiarid riparian soils
2006
- Microbial community activities during establishment, performance, and decline of bench-scale passive treatment systems for mine drainage
2005
- Nitrous oxide flux from soil amino acid mineralization
2005
- Atmospheric carbon mitigation potential of agricultural management in the southwestern USA
2005
- Growth of Eastern Cottonwoods (Populus deltoides) in elevated [CO sub 2 /sub ] stimulates stand-level respiration and rhizodeposition of carbohydrates, accelerates soil nutrient depletion, yet stimulates above- and belowground biomass production
2005
- Belowground factors mediating changes in methane consumption in a forest soil under elevated CO sub 2 /sub
2002
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