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Interior Yukon/Alaska alpine tundra (WWF ecoregion NA1111)

Black spruce and tundra near Beaver Creek, Yukon Territory
Black spruce and tundra near Beaver Creek, Yukon Territory (c) 2005 Scott and Ruth Bassett

Interior Yukon/Alaska alpine tundra map
Source of bioregions data: Olson, D. M. and E. Dinerstein. The Global 200: Priority ecoregions for global conservation. (PDF file) Annals of the Missouri Botanical Garden 89:125-126.

Distinctiveness (1=highest,4=lowest): 2 (regionally outstanding)
This ecoregion contains a variety of large mammals and predators.*

Conservation Status (1=most endangered, 5=most intact): 4 (relatively stable)
About 85% of this ecoregion remains intact. Mining and road development are the main disturbances.*

Characteristic species*
 
Picea glauca (white spruce)
Picea mariana (black spruce)
Populus tremuloides  (quaking aspen)
Betula spp. (birch)

Salix spp. (dwarf willows)

Betula papyrifera (paper birch)
Betula balsamea (balsam poplar)
Pinus contorta  (lodgepole pine)
Abies lasiocarpa  (subalpine fir)

Dryas hookeriana (mountain avens)

 

Associated habitats

Black spruce, near Beaver Creek, Yukon Territory

Black spruce near Beaver Creek, Yukon Territory
(c) 2005 Scott and Ruth Bassett  hires

Tundra, south of the Brooks Range, Alaska

Tundra, near Arctic Circle, south of the Brooks Range, Alaska Tundra, foothills south of the Brooks Range, Alaska Permafrost features, south of the Brooks Range, Alaska
center: Stunted trees along the Dalton Hwy. approaching the southern foothills of the Brooks Range (note elevated pipeline at left) right: Undulations caused by movement of the permafrost below the tundra. (c) 2005 Scott and Ruth Bassett  hires  hires  hires

Willows, near the Arctic Circle, Alaska

Willows near the Arctic Circle, Alaska Willows near the Arctic Circle, Alaska
(c) 2005 Scott and Ruth Bassett  hires  hires

Black spruce and caribou, near Mancha Creek, Arctic National Wildlife Refuge, Alaska

Black spruce and caribou, near Mancha Creek, Arctic National Wildlife Refuge, Alaska Black spruce and caribou, near Mancha Creek, Arctic National Wildlife Refuge, Alaska
(c) 2006 Dallas Smith  hires  hires

* Ricketts, T.H., E. Dinerstein, D.M. Olson, C.J. Loucks, et al.  (1999) Terrestrial Ecoregions of North America: A Conservation Assessment.  World Wildlife Fund - United States and Canada.  Island Press, Washington, D.C. pp. 390-392.

Except as noted, images copyright 2002-2005 Steve Baskauf - Terms of use