Diet reconstruction and historic population dynamics in a threatened seabird

D. RYAN NORRIS* 1 , PETER ARCESE† 1 , DAVID PREIKSHOT‡, DOUGLAS F. BERTRAM§ and T. KURT KYSER¶ * Department of Integrative Biology, University of Guelph, Guelph, ON, Canada N1G 2W1; † Centre for Applied Conservation Research, Department of Forest Sciences, 2424 Main Mall, University of British Columbia, Vancouver, BC, Canada V6T 1Z4; ‡ Aquatic Ecosystems Research Laboratory, Fisheries Center, 2202 Main Mall, University of British Columbia, Vancouver, BC, Canada V6T 1Z4; § Canadian Wildlife Service, c/o Institute of Ocean Sciences, 9860 West Saanich Road, PO Box 6000, Sidney, BC, Canada V8L 4B2; and ¶ Department of Geological Sciences and Geological Engineering, Queen’s University, Kingston, ON, Canada K7L 3 N6