1. Department of Earth, Ocean and Atmospheric Sciences; University of British Columbia; Vancouver British Columbia Canada
2. Marine Biogeosciences, Alfred Wegener Institute - Helmholtz Centre for Polar and Marine Research; Bremerhaven Germany
3. Department of Biology; Université Laval; Quebec Quebec Canada
4. Department of Botany; University of British Columbia; Vancouver British Columbia Canada
5. Peter Wall Institute for Advanced Studies, University of British Columbia; Vancouver British Columbia Canada