|Central coordinates||81o 19.79' West 53o 10.27' North|
|IBA criteria||A4i, A4iii|
|Altitude||0 - 5m|
|Year of IBA assessment||2008|
Site description Akimiski Island is situated just east of the mouth of the Attawapiskat River, in mid-western James Bay. The IBA focuses on the northern shores, which are flat and marshy with beach ridges, and the interior of the island, which features numerous small lakes and ponds, as well as sedge marshlands, and fens. Also part of this site is the eastern half of the south coast, including the eel grass beds at Cape Duncan in the southeastern corner. The vegetation communities present on the island have similarities to both northern Hudson Bay associations and to southern associations.
In addition to its importance for birds, the southern region of Akimiski Island is a maternity denning area and the coasts are a summer retreat for polar bears. The mean annual temperature is approximately 2.5°C and the average rainfall and snowfall are 450 and 250 mm respectively.
Key Biodiversity Akimiski Island is a critical stopover for thousands of geese, ducks and shorebirds. Single day counts in the 1990s have recorded over 10,000 Brant, which is over 3% of this species global population. It is likely that thousands more Brant use Akimiski Island as a spring staging ground. The mid-continent population of Lesser Snow Geese also use Akimiski Island as a spring staging area. During the 1990s, sprong migration counts of Lesser Snow Geese ranged from 10,000 to 20,000. At least 2,000 Snow Geese also nest on the island.
In 1997, a fall migration count recorded over 100,000 Semipalmated Sandpipers, which is almost 4% of this species global population. A small disjunct population of Marbled Godwits (approximately 1,500 birds) breeds along the southwestern James Bay coast. It is likely that the majority of this small population passes through Akimiski Island during migration.
More than 10,000 pairs or 26% of the Southern James Bay Canada Goose population nests on Akimiski Island and more than 24,000 non-breeders may also be present.
The waters surrounding the island provide important habitat for several duck species, such as Oldsquaw and scoters. In total, 140 species of birds have been recorded on Akimiski Island. Of those, 30 are confirmed breeders and an additional 40 probably breed on the island.
|Species||Season||Period||Population estimate||Quality of estimate||IBA Criteria||IUCN Category|
|Snow Goose Anser caerulescens||passage||1991||250,000 individuals||-||A4i||Least Concern|
|Brent Goose Branta bernicla||passage||1973||20,000 individuals||-||A4i||Least Concern|
|Semipalmated Sandpiper Calidris pusilla||non-breeding||1995||100,000 individuals||-||A4i||Near Threatened|
|A4iii Species group - waterbirds||non-breeding||1991-1995||100,000-499,999 individuals||poor||A4iii|
|Protected area||Designation||Area (ha)||Relationship with IBA||Overlap with IBA (ha)|
|Akimiski Island||Migratory Bird Sanctuary||336,700||protected area overlaps with site||260,000|
|IUCN habitat||Habitat detail||Extent (% of site)|
|Wetlands (inland)||Fens transition mires & springs; Freshwater marshes/swamps; Intertidal mud, sand or salt flats; Salt/brackish marshes||-|
|Land-use||Extent (% of site)|
|nature conservation and research||major|
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Recommended citation BirdLife International (2015) Important Bird Areas factsheet: Akimiski Island. Downloaded from http://www.birdlife.org on 06/05/2015
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