ACKNOWLEDGEMENTS
Funding was provided through an NSERC Collaborative Research & Development (CRD) grant, NSERC grant RGPIN-2015-04477, Manitoba Hydro, Saskatchewan Power, and Weyerhaeuser Inc. We are thankful to Bridget Redquest and Austin Thompson for extracting DNA, and The Centre for Applied Genomics (TCAG) at the Hospital for Sick Children (Toronto, Ontario) for library preparation and sequencing, to the facilities of the Shared Hierarchical Academic Research Computing Network (SHARCNET: www.sharcnet.ca) and Compute Canada/ Calcul Canada gme-665-ab.Compute Canada (RRG gme-665-ab), and Amazon Cloud Computing for high-performance computing services. We are also highly recognizant of the contribution of those who provided the tissue samples including Dr. Helen Schwantje, Government of British Columbia; Kent Whaley, Dale Cross, Vicki Trim and Daryll Hedman, Government of Manitoba, Government of Ontario, Guy Savard, Environment and Climate Change Canada; Christine Cuyler, Government of Greenland; Dr. Judith Eger and Lim Burton, The Royal Ontario Museum, Dr. Jean Polfus, University of Manitoba and the Sahtú Renewable Resources Board; and Dr. Mary Gamberg, Gamberg Consulting.