Trends in cetacean abundance in the Gully submarine canyon, 1988–2011, highlight a 21% per year increase in Sowerby’s beaked whales ( Mesoplodon bidens )

• Published in: Canadian Journal of Zoology
• Main Author: Whitehead, Hal
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 2013
• Subjects: Animal Science and Zoology; Ecology, Evolution, Behavior and Systematics; The Gully; Mesoplodon bidens
• Online Access: http://dx.doi.org/10.1139/cjz-2012-0293; http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2012-0293; http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2012-0293

Long time series of abundance data have advanced ecological understanding. I examined trends in incidental sightings of cetaceans in the Gully and neighbouring submarine canyons on the edge of the Scotian Shelf during summers between 1988 and 2011. There were a total of 2938 h of sighting effort in...