1. Research and Collections, The Canadian Museum of Nature, Ottawa, Canada
2. Diatom Herbarium, The Academy of Natural Sciences, Philadelphia, USA
3. Department of Biodiversity, Earth & Environmental Science, Drexel University, Philadelphia, USA
4. Centre Eau Terre Environnement, Institut national de la recherche scientifique, Québec, Canada
5. Department of Environmental Sciences, Université du Québec à Trois-Rivières, Trois-Rivières, Canada