Todd C. Guerdat

Agricultural Engineering Assistant Professor

Ph.D. North Carolina State University

Research Expertise

Integrated Agricultural Production Systems, Water and Wastewater Treatment, Recirculating Aquaculture Systems, Hydroponic Production Systems, Agricultural Nutrient Management, Animal Waste Treatment, Controlled Environment Agricultural Systems, Precision Agriculture, Sustainable Agriculture, Integrated Farming Systems Food Safety

Research Emphasis

My research revolves around the industrial and societal issues surrounding sustainable aquaculture and agricultural practices worldwide. As health conscious consumers continue to increase the per capita consumption of seafood and demand cleaner, greener and safer food sources, we are faced with a need to commit to the development and acceptance of sustainable practices for the agricultural industry. 

However, we also need to meet the growing needs for production characteristics such as sustainability, economic feasibility, and optimized efficiency in the utilization of nutrients, energy, and materials. The anwer to this is a paradigm shift from the typical engineering model of separate unit processes and a move toward the integration of systems. Integrated systems not only offer an opportunity to improve utilization efficiency, but also diversify the farmer's production model thus providing a potential for greater resiliency and sustained productivity. 

My research objectives are based on the development of sustainable agricultural and aquacultural practices by utilizing integrated systems such as (but not limited to) recirculating aquaculture and hydroponic systems as a means to explore and solve a wide variety of environmental and societal issues. My current and future research objectives include: 

  1. Development of recirculating farms, rather than individual recirculating systems. Research needs to focus on influencing and controlling the fate of nutrients from farm systems. 
  2. Establishing efficient engineering design models which incorporate optimized energy balances holistically - species selection, component selection, system and building design, and management and operation. 
  3. Addresing environmental impact through the potential for enabling reuse of agricultural effluent through innovative waste/wastewater treatment processes and engineering designs. Such an approach removes the "black box" approach too often used in research studies. 
  4. Create a sustainable, "location-independent" means for seafood production by creating a modular design, conceptually, that may be located in multiple locations. 
  5. Evaluate new technologies as they emerge on the market for ongoing improvement of seafood production and/or wastewater treatment processes. 
  6. Integrating technologies for the pupose of improved efficiency and productivity. 

My research program is entered on scalable nutrient capture and reuse systems, protected agricultural systems, and alternative agricultural energy systems which will provide opportunities for students and farmers alike to apply their knowledge in a practical manner. My research objectives provide a broad range of opportunities for research and will enable cross-college collaborations. 

The Agricultural Engineering research program is supported by the New Hampshire Agricultural Experiment Station. With ongoing research at the Anadromous Fish and Invertebrate Research (AFAIR) lab, the Macfarlane Research Greenhouses, and the new Recirculating Farms Research Greenhouses at Kingman Farm, the program is ever expanding. Please feel free to contact me directly to participate in our multi-discplinary research projects. 

Courses Taught

  • SAFS 729 / BIOL 829: Agricultural Waste Managment
  • ZOOL 610: Aquaculture

C/V not available at this time.


University of New Hampshire
Department of Biological Sciences
Spaulding Life Sciences Building, G42
38 Academic Way
Durham, NH 03824 

Research Areas: 
Integrated Agricultural Systems
Water and Wastewater Treatment
Recirculating Aquaculture Systems
Hydroponic Production Systems
Agricultural Nutrient Management
Animal Waste Treatment
Controlled Environment Agriculture
Precision Agriculture
Sustainable Agriculture