mesoProgram Team

(above) mesoTeam members and alumni at the 2026 AEES Conference in Vermont.

Tiffany L. Messer, PhD (Principle Investigator)

Dr. Tiffany Messer is an associate professor and the Bill Gatton Foundation Endowed Chair of Environmental Science in the Department of Biosystems and Agricultural Engineering in the Martin-Gatton College of Agriculture, Food, and Environment. She grew up on a farm east of Winchester, Kentucky, where her love for water resources was sparked. She  joined the Biosystems and Agricultural Engineering Department at the University of Kentucky in October 2020. She holds degrees in Biosystems and Agricultural Engineering (University of Kentucky, B.S., 2008) and Biological and Agricultural Engineering (North Carolina State University, M.S. 2010, PhD, 2015). Additionally, Tiffany completed a postdoctoral appointment in the Nicholas School of the Environment at Duke University (2015-2016) to focus on ecological designs and analytical chemistry. 

Her research interests reside at the intersection of engineering, ecology, and agriculture with an emphasis on environmental biogeochemistry and water resources in human impacted ecosystems. She works specifically on identifying, tracing, and treating nutrients and emerging contaminants using ecological engineered designs (i.e., wetlands, streams, stormwater control measures). Along with being awarded over $18 million as a project investigator (PI) or co-PI in grant funding, she has been awarded the Gatton Foundation Endowed Chairship (2024-2029), NSF CAREER Award (2021), USDA AFRI NIFA Postdoctoral fellowship (2016), and the EPA STAR (2012-2015) fellowship. These grants have  allowed her to form an incredible team including graduate and undergraduate engineering and natural resource researchers that embrace creating a welcoming community, while studying designs to improve water quality in Kentucky, the southeast, midwest and beyond. Additionally, she is an active member of the American Society of Agricultural and Biological Engineers (ASABE) and the American Ecological Engineering Society (AEES).

She loves teaching and has taught GIS for Water Resources (junior-graduate level), Engineering Computer program (freshman level), Constructed Wetlands  (junior-graduate level), Soil and Water Engineering (junior-senior level), and Engineering Technical Writing (graduate level) courses. Most importantly she enjoys hearing about student experiences, connecting students with employers, and guiding students to reach their career dreams.

In her free time, Tiffany enjoys spending time with her family, which include her husband (Patrick), sons (Elliott (11) and Raymond (8)), and dogs Oliver (13) and Phoebe (2). She also enjoys hiking, art projects, traveling, and visiting the family farm.

William Rud
(PhD Student/ Lab Manager)

William Rud is a PhD student in Biosystems and Agricultural Engineering at the University of Kentucky. He is from Smiths Station, Alabama where he lived until moving to Auburn for his undergraduate degree. William obtained his Bachelor of Biosystems Engineering from Auburn University before moving to Kentucky to start his research and degrees on water quality, ecosystems, and emerging contaminants. His research focuses on the impact, fate, and interactions of contaminants of emerging concern on nutrient cycling in streams, wetlands, and agroecosystems. In the future, William plans to continue his career in ecological engineering and water quality research after completing his degree. In his free time William likes to backpack, cook, canoe, and play sand volleyball.

 

Isaac Stevens
(MS Student)

Isaac Stevens is an MS student in Biosystems and Agricultural Engineering at the University of Kentucky. He was born and raised in Lexington, Kentucky, and attended the University of Kentucky for his undergraduate studies, where he received his Bachelor of Biosystems and Agricultural Engineering. His research focuses on microplastics, water quality, and the evaluation of modern water infrastructure. His MS project involves researching microplastics and Legionella within common Kentucky wastewater infrastructure. After completing his degree, Isaac plans to continue his career in environmental engineering by pursuing stormwater management and ensuring water quality for the Commonwealth. For fun, Isaac likes to listen to music,  play video games, watch the NBA, and bike around town.

Julio Benedicto Perez
(PhD Student)

Julio Benedicto is a PhD Student in Integrated Plant and Soil Sciences at the University of Kentucky. He is from Valencia, Spain. After completing his undergraduate degree from Campbellsville University, he moved to Lexington and started working with Dr. Tiffany Messer. Julio is interested in the role plants and microbes play in the fate and transport of emergent contaminants and nutrients, focusing on the ecology of urban waterways, treatment wetlands and landscape-level pollution. Besides work, Julio enjoys playing music, friendships and good conversations.

Katherine Ristola
(PhD Candidate)

Katherine Ristola is a PhD Candidate in the Biosystems and Agricultural Engineering department at the University of Kentucky. She is from Livonia, MI where she lived until moving to Lexington to complete her undergraduate and MS degrees from the University of Kentucky. For her MS, Katherine worked with Dr. Tiffany Messer to research the capabilities of wetland treatment systems to remove nutrients and improve water quality from treated wastewater treatment plant effluent and the potential impacts of bourbon stillage applied to wetland treatment systems. Katherine plans to continue her MS research with Dr. Messer and expand her research into understanding the dynamics between PFAS and wetland treatment systems. In her free time Katherine likes to spend time with her boyfriend James and their dog Zeus at parks and breweries, read, bake, cook, and spend time with family. 

Dylan McPeake
(PhD Student)

Dylan McPeake is a PhD student in Biosystems and Agricultural Engineering at the University of Kentucky. Dylan is originally from Hope Mills, North Carolina. Dylan obtained his bachelor's degree in biological and agricultural engineering (ecological engineering) from North Carolina State University and his master's degree in civil and environmental engineering from Utah State University, where he looked at the dynamics of cyanotoxins in water and air around Utah Lake. Dylan currently works with Dr. Tiffany Messer, where he looks at the dynamics of PFAS and nitrate inside various types of treatment wetlands. In his free time, he exists.

 

Current Undergraduate
Research Team!

Daniel Kee Tam
Charles Weber
Eryk Carrillo
Amanda Beall

mesoProgram Alumni

Graduate Students
Sam Hansen, M.S. Biological Systems Engineering (Nebraska Department of Environmental Quality; Lincoln, NE)
Mary Keilhauer, M.S. Natural Resource Sciences (MIG; Denver, CO)
Julia Lindgren, M.S. Environmental Engineering (HDR; Boise, ID)
Levi McKercher, M.S. Natural Resource Sciences (PhD Student, University of South Carolina)
Jessica Satiroff, M.S. Environmental Engineering (Infrastructure Design Group, Inc.; Sioux Falls, SD).
Brittany Trejo, M.S. Environmental Engineering  (U.S. Department of Defense; Albuquerque, NM).
Nayelly Rodriguez, M.S. Biosystems and Agricultural Engineering (PROtect; Denver, CO)
Josephus Borsuah, Ph.D. Natural Resource Sciences (Research Scientist, Oklahoma State University; Stillwater, OK)
Jacob Richardson, M.S. Biosystems and Agricultural Engineering (PhD Student, Duke University)
Kyra Sigler, M.S. Biosystems and Agricultural Engineering (Community Focused Water Researcher, Virginia Tech; Blacksburg, VA)
Emily Nottingham Byers, Ph.D., Biosystems and Agricultural Engineering (KWRI; Lexington, KY)
Alexis McFadden, M.S., Biosystems and Agricultural Engineering (Resource Environmental Solutions; Louisville, KY)
Kiley Power, M.S. Biosystems and Agricultural Engineering (Third Rock Consultants; Lexington, KY)
Caleb Stickney, M.S. Biosystems and Agricultural Engineering (Beaver Creek Hydrology; Lexington, KY)
Matthew Russell, Ph.D., Post-doc, Research Technician, Laboratory Manager (White Sands Water Engineers; Denver, CO)

Undergraduate Researchers
Lillian Schlaug
Natalie Balbuena
Alexa Davis
Kaitlyn Duncan
Autumn Dunn 
Garrett Isom  
PJ Hildebrand
Maddie Johnson 
Trevor Kaslon 
Helen Little
Bailey Monroe 
Erin Remley
Ken Oathout
Abbey Osborne
Adam Ransdell
Rachel Rohrer
​Vanessa Spring
Jacob Stover 
Rob Schroeder  
Benjamin Worden 
Brody Zabel
Kyle Lemaster
Ada Lasley
Elizabeth Frericks
Gretchen Wahoff
J.P. Edie
Avery Krahwinkel