Data Collection Methodology (English, TXT)

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Publisher-reported update

2016-10-21

The Atlas of Pelagic Seabirds off the West Coast of Canada presents maps that display the distribution of 48 species of seabirds and two species pairs (i.e., Red-necked and Red Phalaropes, and Hawaiian and Galapagos Petrels). Seabird surveys were conducted aboard commercial and Canadian federal government ‘ships-of-opportunity’ from 1982-1983 and 1991-2005 within the study area (45° N to 58° N and from the coast to 148° W). Sightings of rare species that came from other sources (including some pre 1982 and post 2005) are also included in order to present as complete a picture as possible. For 33 species and one species pair, the average densities within 5’ latitude by 5’ longitude grid cells are displayed seasonally. The seabirds mapped in this manner include 11 species of Procellariiformes (albatrosses, fulmars, petrels, shearwaters and storm-petrels), and 24 species of Charadriiformes (phalaropes, skuas, gulls, terns and auks). The sighting locations for an additional 15 species and one species pair are also mapped. This group, comprised of 10 species of Procellariiformes and seven species of Charadriiformes includes species that are relatively uncommon to rare in the study…

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