Marine Mammal Institute

Johnston DW, Bowers MT, Friedlaender A, Lavigne DM. The Effects of Climate Change on Harp Seals (Pagophilus groenlandicus). PLoS ONE. 2012 ;7(1):e29158.

Johnston DW, Friedlaender A, Read AJ, Nowacek DP. Initial density estimates of humpback whales (Megaptera novaeangliae) in the inshore waters of the western Antarctic Peninsula during late autumn. Endangered Species Research. 2011 ;18(1):63-71.

Johnston DW, Friedlaender A, Torres LG, Lavigne DM. Variation in ice cover on the east coast of Canada, 1969-2002: climate variability and implications for harp and hooded seals. Journal of Climate Research. 2005 ;29:209-222.