Assistant Professor

Nutrient cycling is the common thread that ties together different areas of research in our lab. We quantify the forms, biogeochemical transformations, and fluxes of essential nutrients for life on Earth, aiming to: (1) clarify important processes that underpin ecosystem function, (2) identify opportunities for beneficial intervention, and (3) design systems that achieve nutrient management objectives. This includes analyzing soils, sediments, plants, water, and wastes in "natural", engineered, urban, and agricultural ecosystems. We also use material flow analysis, modeling, and GIS to study nutrient dynamics at larger spatial scales.

Increasingly, we are focused on developing and evaluating strategies for nutrient recovery and recycling to support a circular economy. Transition paths to a circular nutrient economy are complex, and potential exists for myriad unintended consequences. Our lab is currently engaging with organics recycling businesses, farmers, pioneers in resource recovery from human waste, and fellow academics from diverse disciplines on this fascinating topic.

My teaching in the Rubenstein School is focused on ecological design in the contexts of water quality, waste management, and food systems.


Roy, E.D. 2017. Phosphorus recovery and recycling with ecological engineering: A review. Ecological Engineering 98: 213-227.

Roy, E.D., E.A. Smith, S. Bargu, and J.R. White. 2016. Will Mississippi River diversions designed for coastal restoration cause harmful algal blooms? Ecological Engineering 91: 350-364.

Roy, E.D., P.D. Richards, L.A. Martinelli, L. Della Coletta, S.R. Machado Lins, F. Ferraz Vazquez, E. Willig, S. Spera, L.K. VanWey, and S. Porder. 2016. The phosphorus cost of agricultural intensification in the tropics. Nature Plants 2: 16043.

Day, J.W., C.A.S. Hall, E.D. Roy, M. Moerschbaecher, C. D'Elia, D. Pimentel, and A. Yáñez-Arancibia. 2016. America's most sustainable cities and regions: surviving the 21st century mega-trends. Springer.

Roy, E.D., J.R. White, & M. Seibert. 2014. Societal phosphorus metabolism in future coastal environments: Insights from recent trends in Louisiana, USA. Global Environmental Change 28: 1-13.

Roy, E.D., A.T. Morzillo, F. Seijo, S.M.W. Reddy, J.M. Rhemtulla, J.C. Milder, T. Kuemmerle, and S.L. Martin. 2013. The elusive pursuit of interdisciplinarity at the human-environment interface. BioScience 63: 745-753.

Martin, J.F., E.D. Roy, S.A.W. Diemont, & B. Ferguson. 2010. Traditional ecological knowledge (TEK): Ideas, inspiration, & designs for ecological engineering. Ecological Engineering 36: 839-849.

Eric Roy

Areas of Expertise and/or Research

Instructional programs: Environmental Sciences, Natural Resources
Research: Nutrient biogeochemistry & management, ecological engineering & design, aquatic ecology, food systems, material flow analysis


  • Ph.D., Oceanography & Coastal Sciences, Louisiana State University, 2013
  • M.S., Food, Agricultural & Biological Engineering, Ohio State University, 2008
  • B.S., Mechanical Engineering, Old Dominion University, 2006


Office Location:

211 Aiken Center, 81 Carrigan Drive

  1. Eric's website