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Location Canada, Northwest Territories
Central coordinates 130o 10.31' West  67o 0.05' North
IBA criteria A4i, A4iii
Area 82,900 ha
Altitude 0 - 200m
Year of IBA assessment 2008

Bird Studies Canada/Nature Canada

Site description The Lower Mackenzie River Islands IBA site starts at Fort Good Hope, Northwest Territories, and continues down the Mackenzie River for 270 kilometres to where the Tree River joins the Mackenzie. The numerous river islands found here are composed of sedimentary deposits overtop of Devonian bedrock. Spring floods result in sand bars and shorelines of sand, mud and willow trees around low-lying islands. Away from the periphery of the islands, forests of mature white spruce and balsam polar grow. In winter the islands are the preferred habitat of moose. The poplar stands provide cover and the willow trees are an excellent food source.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Tundra Swan Cygnus columbianus passage  1972  3,250 individuals  A4i  Least Concern 
A4iii Species group - waterbirds non-breeding  100,000-499,999 individuals  unknown  A4iii   


IUCN habitat Habitat detail Extent (% of site)
Forest Boreal mixed woods  -
Wetlands (inland) Intertidal mud, sand or salt flats; Rivers  -

Land use

Land-use Extent (% of site)
not utilised major
water management minor

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Lower Mackenzie River Islands. Downloaded from on 20/09/2014

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