Flagship Species – Flagship Problems: recovery of species at risk and the conservation of biodiversity in Canada 11 This introduction is part of the virtual symposium “Flagship Species – Flagship Problems” that deals with ecology, biodiversity and management issues, and climate impacts on species at risk and of Canadian importance, including the polar bear ( Ursus maritimus ), Atlantic cod ( Gadus morhua ), Piping Plover ( Charadrius melodus ), and caribou ( Rangifer tarandus ).