Abundance of Whales in West and East Greenland in Summer 2015

作者：Rikke G. Hansen, Tenna Boye, Rasmus Stenbak Larsen, Nynne H. Nielsen, Outi M. Tervo, Rasmus Due Nielsen, Marianne H. Rasmussen, Mikkel‐Holger S. Sinding, Mads Peter Heide‐Jørgensen · 发表于：NAMMCO Scientific Publications · 年份：2018 · DOI：10.7557/3.4689 · 被引用次数：30 · 研究领域：Marine animal studies overview、Arctic and Antarctic ice dynamics、Methane Hydrates and Related Phenomena

An aerial line transect survey of whales in West and East Greenland was conducted in August-September 2015. The survey covered the area between the coast of West Greenland and offshore (up to 100 km) to the shelf break and in East Greenland from the coast up to 50 km offshore crossing the shelf break. A total of 423 sightings of 12 cetacean species were obtained and abundance estimates were developed for common minke whale, (Balaenoptera acutorostrata), fin whale (Balaenoptera physalus), humpback whale (Megaptera novaeangliae), harbour porpoise (Phocoena phocoena), long-finned pilot whale, (Globicephala melas) and white-beaked dolphin (Lagenorhynchus albirostri). The estimates were corrected for perception bias and availability bias where possible. Data on surface corrections for minke whales and harbour porpoises were collected from whales instrumented with satellite-linked time-depth-recorders. Options for estimation methods are presented and the preferred estimates are: minke whales: 5,095 (95% CI: 2,171-11,961) in West Greenland and 2,762 (95% CI: 1,160-6,574) in East Greenland, fin whales: 2,215 (95% CI: 1,017-4,823) in West Greenland and 6,440 (95% CI: 3,901-10,632) in East Greenland, humpback whales: 993 (95% CI: 434-2,272) in West Greenland and 4,223 (95% CI: 1,845-9,666) in East Greenland, harbour porpoises: 83,321 (95% CI: 43,377-160,047) in West Greenland and 1,642 (95% CI: 319-8,464) in East Greenland, pilot whales: 9,190 (95% CI: 3,635-23,234) in West Greenland a...