Dr. Jeff Ridal
Dr. Jeff Ridal
Executive Director and Chief Research Scientist
Phone: 613-936-6620 (228)
My research predominantly involves water and sediment quality issues, including recreational water quality, fate and transport of contaminants, and food web bioaccumulation.
My educational background is in chemistry (BSc. Trent, M.Sc. Ottawa) and oceanography (Ph.D. Dalhousie). Post-doctoral positions at Canada’s National Water Research Institute and the University of Montreal brought me into the freshwater field. I joined the River Institute in 1995 as its first Research Scientist and became its Executive Director in 2004. I hold adjunct professorships with Queen’s University and the University of Ottawa. In 2008, I was recently named Canadian co-Chair of the IJC’s Science Priority Committee for the International Joint Commission (IJC) of the United States and Canada, and has served on its Science Advisory Board for the past 8 years.
Bramburger AJ, Brown RS, Haley J, Ridal JJ. A new, automated rapid fluorometric method for the detection of Escherichia coli in recreational waters, Journal of Great Lakes Research 2014, http://dx.doi.org/10.1016/j.jglr.2014.12.008
Hodson PV, Norris K, Berquist M, Campbell LM, Ridal JJ. Mercury concentrations in amphipods and fish of the Saint Lawrence River (Canada) are unrelated to concentrations of legacy mercury in sediments. Science of theTotal Environment 2014; 494-495:218-28.
Lessard CR, Poulain AJ, Ridal JJ, Blais JM. Dynamic mass balance model for mercury in the St. Lawrence River near Cornwall, Ontario, Canada. Science of theTotal Environment 2014; 500–501 2014; 131–138.
Ridal J, Hickey B, Marty J and Bhavsar, S.P.. Addressing the fish consumption beneficial use impairment in the Bay of Quinte. Accepted for publication in Aquatic Ecosystem Health & Management.
.Avramescua, M-L. Yumvihoze, E. Hintelmann, H., Ridal, J., Fortin, D., Lean, D.R.S. Biogeochemical Factors Influencing Net Mercury Methylation In Contaminated Freshwater Sediments From The St. Lawrence River In Cornwall, Ontario, Canada. Science of the Total Environment. Accepted for publication.
Delongchamp, T.A., J.J. Ridal, D.R.S. Lean, L. Poissant, and J.M. Blais. 2010. Mercury transport between sediments and the overlying water of the St. Lawrence River area of concern near Cornwall, Ontario Environmental Pollution. 158: 1487-1493.
.Marty, J, M.R. Twiss, J.J. Ridal, Y. de la Fontaine, and J.M. Farrell. 2010. From the Great Lakes flows a Great River: overview of the St. Lawrence River ecology supplement. Hydrobiologia, 647: 1–5.
Ridal, J.J., L.E. Yanch, A.R. Fowlie, N.R. Razavi, T.M. Delongchamp, E.S. Choy, Fathi, P.V. Hodson, L.M. Campbell, J.M. Blais, M.B.C. Hickey, E.Yumvihoze, .R.S. Lean. 2009. Potential causes of enhanced transfer of mercury to St. Lawrence River Biota: implications for sediment management strategies at Cornwall, Ontario, Canada. Hydrobiologia 647: 81–98
Delongchamp, D.R.S. Lean, J.J. Ridal, J.M. Blais. 2009. Sediment mercury dynamics and historical trends of mercury deposition in the St. Lawrence River area of concern near Cornwall, Ontario, Canada. Science of the Total Environment 407 (2009) 4095-4104.
MacDougall MJ, Savard L, and Ridal, JJ. 2015. Cornwall Harbour Waterlot Study: Review and Interpretation of environmental data and issues. Report prepared on behalf of the City of Cornwall in support of the Cornwall Harbour property Environmental Site Assessment
Razavi NR, Savard L, Windle MJS, Ridal JJ. 2015. A spatial analysis of mercury concentrations in shoreline sediments of the St. Lawrence River (Cornwall) Area of Concern. Report prepared for Environment Canada and the Ontario Ministry of the Environment and Climate Change. 43 pp.
Ridal JJ. 2014. Status Report for the Fish and Wildlife Restrictions Beneficial Use Impairment for the Bay of Quinte Area of Concern. Report prepared for the Bay Quinte Restoration Council, Belleville, ON and Environment Canada.
Serveiss V, Orris P, Ridal JJ, Delinger J. 2014. Contaminant Levels in Great Lakes Edible Fish Species in Recommended human health indicators for assessment of progress on the Great Lakes Water Quality Agreement. A Report from the Health Professionals Advisory Board to the International Joint Commission. 52 pp.
Windle M, Delage K, Ridal JJ. 2014. Compilation, mapping and spatial analysis of historical mercury concentrations in sediments and biota of the Cornwall Area of Concern (AOC). Report prepared for the Ontario Ministry of the Environment and Climate Change, Kingston, ON.
Ridal JJ. Great Lakes Water Quality: Progress and Challenges in the St. Lawrence River and Bay of Quinte AOCs. Invited presentation to the House of Commons Standing Committee on Environment and Sustainable Development, March 27, 2014, Ottawa, ON.
Ridal JJ. Spotlight on the St. Lawrence River: Environmental challenges and progress in a Great River system. Invited presentation to the Great Lakes Legislative Caucus July 25, 2014, Quebec, PQ.
Ridal, J.J., C. Veenstra, D.R.S. Lean and E. Yumvihoze. 2009. Assessment of Mercury Loadings from Tributaries to the St. Lawrence River (Cornwall) Area of Concern. Report prepared for the Raisin Region Conservation Authority, Cornwall, ON, the Ontario Ministry of the Environment, Eastern Region, Kingston, ON, and the Ontario Ministry of Agriculture, Food and Rural Affairs, Kemptville, ON in support of the St. Lawrence River (Cornwall) Remedial Action Plan and the Canada-Ontario Agreement.
Ridal, J.J., C. Veenstra and C. Critoph. 2009. Bacteria Contamination Assessment and Remediation Program 2008: Contributions of Tributaries. Report prepared for the Raisin Region Conservation Authority, Cornwall, ON, and the Ontario Ministry of the Environment, Eastern Region, Kingston, ON in support of the St. Lawrence River (Cornwall) Remedial Action Plan and the Canada-Ontario Agreement. 45 pp.
(Ridal, J.J. et.al.) Contributing author to the Work Group Report on Beaches and Recreational Water Quality prepared for the 2009 Biennial Meeting of the International Joint Commission. Available online at http://meeting.ijc.org/
(Ridal, J.J. et.al.) Contributing author to the Work Group Report on Chemicals of Emerging Concern prepared for the 2009 Biennial Meeting of the International Joint Commission. Available online at http://meeting.ijc.org/
Ridal, J.J. and M.B.C. Hickey. 2009. Sampling Program in Support of the Assessment of Fish Consumption Restrictions (Beneficial Use Impairment #1) for the Bay of Quinte Remedial Action Plan. Report prepared for the Bay of Quinte Remedial Action Plan. 20 pp