Important Bird Areas

Unimak & Akutan Passes

Alaska

The Unimak & Akutan Passes IBA occupies 1,128,597 acres of pelagic open water habitat. The IBA is located in the Eastern Aleutians ecoregion within the Aleutian Islands. The centroid of this IBA is 1.2 km from the nearest land.

It Unimak & Akutan Passes IBA is owned and managed as: federal-other and state-other, and has the following primary uses: fisheries/aquaculture-other, birdwatching, ecotourism, and ports. It is exposed to the following threat types: aquaculture/fisheries, boats, habitat fragmentation, natural events-other, nutrient pollution, and water pollution

The Unimak & Akutan Passes is an IBA for the following species: Sooty Shearwater, Whiskered Auklet, Glaucous-winged Gull, Crested Auklet, Tufted Puffin, Whiskered Auklet, Short-tailed Shearwater, and Black-legged Kittiwake. It contains an estimated 1,050,440 Sooty Shearwater (breeding), 11,432 Whiskered Auklet (non-breeding), 12,122 Glaucous-winged Gull (breeding), 375,758 Crested Auklet (non-breeding), 283,049 Tufted Puffin (breeding), 124,603 Whiskered Auklet (breeding), 3,273,340 Short-tailed Shearwater (breeding), and 94,897 Black-legged Kittiwake (breeding).

Ornithological Summary

Unimak & Akutan Passes is an IBA for the following species: Sooty Shearwater, Whiskered Auklet, Glaucous-winged Gull, Crested Auklet, Tufted Puffin, Whiskered Auklet, Short-tailed Shearwater, and Black-legged Kittiwake. It contains an estimated 1,050,440 Sooty Shearwater (breeding), 11,432 Whiskered Auklet (non-breeding), 12,122 Glaucous-winged Gull (breeding), 375,758 Crested Auklet (non-breeding), 283,049 Tufted Puffin (breeding), 124,603 Whiskered Auklet (breeding), 3,273,340 Short-tailed Shearwater (breeding), and 94,897 Black-legged Kittiwake (breeding). These estimates are based on the analysis of 690 non-breeding surveys and 2913 breeding surveys. These surveys were conducted between January 26, 1975 and September 28, 2009.

Conservation Issues

The Unimak & Akutan Passes IBA is threatened by: aquaculture/fisheries, boats, habitat fragmentation, natural events-other, nutrient pollution, and water pollution.

Ownership

The Unimak & Akutan Passes IBA is owned and managed as: federal-other and state-other.

Habitat

The Unimak & Akutan Passes IBA is characterized by the following habitat types: open water. The IBA is located in the Eastern Aleutians ecoregion with the Aleutian Islands. The average water depth is -135.2 m and ranges from -1194.7 m to 0.0 m.

Land Use

The Unimak & Akutan Passes IBA is used for: fisheries/aquaculture-other, birdwatching, ecotourism, and ports.

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