Associate Professor

Nutrient cycling is the common thread that ties together our different research interests. 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. We couple studies in the lab and field to explore the properties and responses of soils, sediments, plants, water, and residuals (organic & industrial) in engineered, urban, and agricultural ecosystems. To scale our nutrient dynamics work to the landscape, we use material flow analysis, modeling, and GIS.

Our work covers three important themes in nutrient stewardship: nutrient use efficiency in food systems, resource recovery and reuse, and nature-based solutions/green infrastructure.

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


  • Conrad, Z., M.T. Niles, D.A. Neher, E.D Roy, N.E. Tichenor, and L. Jahns. 2018. Relationship between food waste, diet quality, and environmental sustainability. PLoS ONE 13(4): e0195405.
  • Wiegman, A., J.W. Day, C.F. D'Elia, J.S. Rutherford, J.T. Morris, E.D. Roy, R.R. Lane, D.E. Dismukes, & B.F. Snyder. 2018. Modeling impacts of sea-level rise, oil price, and management strategy on the costs of sustaining Mississippi delta marshes with hydraulic dredging. Science of the Total Environment 618: 1547-1559.
  • Roy, E.D., E. Willig, L.A. Martinelli, P.D. Richards, F. Ferraz Vazquez, L. Pegorini, S. Spera, & S. Porder. 2017. Soil phosphorus sorption capacity after three decades of intensive fertilization in Mato Grosso, Brazil. Agriculture, Ecosystems and Environment 249: 206-214.
  • Roy, E.D., N. Nguyen, & J.R. White. 2017. Changes in estuarine sediment phosphorus fractions during a large-scale Mississippi River diversion. Science of the Total Environment 609: 1248-1257.
  • 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.

Associations and Affiliations

Licensed Professional Engineer in Vermont.

Eric Roy

Areas of Expertise and/or Research

Instructional programs: Environmental Sciences, Sustainability, Ecology and Policy
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


  • 802-656-7359
Office Location:

211 Aiken Center, 81 Carrigan Drive

  1. Eric's website