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Biography
Timothy J. Canfield is an Ecologist in GWERD’s Ecosystem and Subsurface Protection Branch. Mr. Canfield has a B.S. in Biology from Bates College in Lewiston, Maine and an M.S. in Fisheries and Wildlife (Limnology) from the University of Missouri-Columbia, in Columbia Missouri. Prior to coming the U.S. EPA, Mr. Canfield worked 12 years for the U.S. Fish and Wildlife Service at the National Fisheries and Contaminant Research Center in Columbia, MO where he conducted research evaluating the effects of sediment contamination on resident benthic invertebrate populations as part of an integrated assessment of several areas including priority sites in the Great Lakes, superfund sites in Montana and Missouri, the Upper Mississippi River and military sites in Aberdeen MD. Mr. Canfield currently participates and a multi-agency, multinational work group to develop sediment assessment guidelines for use in the United States and Canada.
For the past 8 years Mr. Canfield has been working on developing a relatively new program in Ecosystem Restoration Research and Risk Management for the USEPA's National Risk Management Research Laboratory. In addition to this effort, Mr. Canfield is involved in four funded research projects looking a broad spectrum of ecosystem restoration research questions. The four current areas of research effort include: 1. Evaluating the fate and effects of non-target stressors entering wetlands constructed for wastewater treatment; 2. Evaluating the fate and effects of changing amounts and ratios of nitrogen and phosphorus on algal communities; 3. Assessing the assimilative capacity of watersheds to mitigate stressors through the use of invertebrate deformities as markers of stressor overload; 4. Evaluating the effect of restoring wetlands in riparian buffer areas on in-stream water quality with a focus on the total load of nutrients and sediments entering these stream areas from agricultural field runoff. In addition Mr. Canfield is serving in a Technical Advisory capacity with the EPA Office of Air and Radiation overseeing a project on the Connecticut River through the Connecticut River Airshed, Watershed Consortium. Mr. Canfield is the Team Leader for the Riparian and Estuarine Restoration Research Team at GWERD and currently serves as the Chair of ASTM Committee E47 on Biological Fate and Environmental Effects.