NDLI: Migrant shorebird use of Akimiski Island, Nunavut: a sub-arctic staging site

Content Provider	Springer Nature Link
Author	Pollock, Lisa A. Abraham, Kenneth F.
Copyright Year	2012
Abstract	Determining the importance of stopover and staging areas to migrating shorebirds (Aves: Charadriiformes) is essential if such habitats are to be successfully protected. Migration chronology, species composition, length of stay, body condition, and estimated total abundance of shorebirds during spring and fall migratory periods of 2008 and 2009 were documented on Akimiski Island, Nunavut, Canada. Fourteen shorebird species were observed during spring point counts and 18 during fall. Semipalmated (Calidris pusilla) and White-rumped (C. fuscicollis) Sandpipers comprised about 80 % of all individuals observed. A greater number of species and individuals were observed during fall than spring in both years. Radio-transmitters attached to juvenile Semipalmated and Least (C. minutilla) Sandpipers indicated highly variable lengths of stay ranging up to 26 days in both species (Semipalmated Sandpiper averaged 6.5 ± 2.67 days, n = 12; Least Sandpipers averaged 7.25 ± 3.79 days, n = 8). In 2009, Semipalmated Sandpipers captured and weighed later in the season were significantly heavier than those captured earlier suggesting that this species is refueling while on Akimiski Island. A fall migration seasonal density of 5,267 (2,193–8,341) shorebirds/km2 was estimated given a residence probability (i.e., the probability of an individual being present in consecutive counts) of 0.906 ± 0.181. Assuming similar habitat value and shorebird density, an extrapolation of the seasonal plot density of 5,267 birds/km2 to the total 192 km2 mudflat habitat on Akimiski Island yields an estimate of 1,011,264 (421,098–1,601,429) shorebirds during fall migration, making Akimiski Island of Hemispheric importance as a staging site for migrant arctic-breeding shorebirds.
Starting Page	1691
Ending Page	1701
Page Count	11
File Format	PDF
ISSN	07224060
Journal	Polar Biology
Volume Number	35
Issue Number	11
e-ISSN	14322056
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-06-24
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Staging site Length of stay Calidris pusilla Calidris fuscicollis Population modeling Nunavut Zoology Microbiology Oceanography Ecology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Agricultural and Biological Sciences

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