1. Department of Environmental and Life Sciences/Biology; Karlstad University; Karlstad Sweden
2. Centre Eau, Terre et Environnement; Institut National de la Recherche Scientifique; Québec QC Canada
3. U.S. Fish and Wildlife Service; Western New England Complex; Essex Junction VT USA
4. USGS-Leetown Science Center; S.O. Conte Anadromous Fish Research Center; Turners Falls MA USA