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Figure 10. Typical view of Alaska Range Section. 



The vegetation at the Southern interior study sites varied because 

 of differences in climate, elevation, and geology of the three physiographic 

 provinces. The West Fork Tolovana River site is in a valley heavily wooded 

 with white spruce and paper birch with a thick understory, particularly 

 along the river. At McManus Creek, the surrounding hillsides have thin 

 stands of white spruce with dense underbrush. The floodplain areas devoid of 

 white spruce are covered with willow thickets with woody and herbaceous 

 groundcover. At the two Tanana River sites the adjoining hillsides are 

 covered with dense stands of aspen and paper birch with scattered white 

 spruce while islands in the fl oodp lain are covered by 10 to 20 m tall stands 

 of white spruce with scattered paper birch. The vegetation surrounding the 

 Phelan Creek site consists of subalpine tundra, upland thickets associated 

 with the drainages, and scattered, open stands of white spruce. 



Resident fish species found in the Tanana River system include Arctic 

 grayling, northern pike, burbot, longnose sucker, slimy sculpin, various 



6! 



