1. University of British Columbia, Institute for the Oceans and Fisheries , Vancouver, BC V6T 1Z4 , Canada
2. University of British Columbia, Department of Earth, Ocean and Atmospheric Sciences , Vancouver, BC V6T 1Z4 , Canada
3. Hakai Institute , Heriot Bay, BC V9W 0B7 , Canada
4. University of Victoria, Department of Geography , Victoria, BC V8W 2Y2 , Canada