1 © 2020 The Authors Water Quality Research Journal | 55.1 | 2020 A global scan of how the issue of nutrient loading and harmful algal blooms is being addressed by governments, non-governmental organizations, and volunteers Étienne Foulon, Alain N. Rousseau, Glenn Benoy and Rebecca L. North ABSTRACT Harmful algal blooms (HABs) in aquatic ecosystems are of concern worldwide. This review deals with Étienne Foulon (corresponding author) Alain N. Rousseau how jurisdictions around the world are addressing this water quality issue to inform recommendations INRS-ETE/Institut National de la Recherche Scientifique – Eau Terre Environnement, regarding nutrient loading and HABs in Missisquoi Bay-Lake Champlain and Lake Memphremagog; 490 rue de la Couronne, Québec City, transboundary lakes located in the USA and Canada that suffer from symptoms of eutrophication. Québec G1K 9A9, Canada A global scan of the literature resulted in the consideration of 12 case studies of large water bodies E-mail:
[email protected] within large watersheds, excluding in-lake geoengineering approaches. Although all of the systems Glenn Benoy Canadian Rivers Institute, Faculty of Forestry and experience excessive nutrient loading, they vary in two key ways: sources of nutrients and Environmental Management, manifestations of eutrophication ranging from HABs, to limited recreational uses, to the additional University of New Brunswick, P.O. Box 4400, 28 Dineen Drive, Fredericton, complexity of internal loadings and fish kills, up to drinking water shutdowns. The case studies were NB E3B 5A3, Canada analyzed with respect to four categories of approaches, namely: (i) regulatory; (ii) incentive-based; Rebecca L. North (iii) risk mitigation; and (iv) outreach, engagement, and educational.