Characteristics of a refuge for native freshwater mussels (Bivalvia: Unionidae) in Lake St. Clair - McGoldrick, D.J.; Metcalfe-Smith, J. L.; Arts, M.T.; Schloesser, D.; Newton, T.J.; Mackie, G.L.; Monroe, E.M.; Biberhofer, J.; Johnson, Kevin (Journal of Great Lakes Research, 2009)