appeared to provide adequate habitat with sufficient food supplies but both 

 received low fauna use. They were both 1.0 ha or less in size. 



The Tanana R i ver-Upstream pit, which was 13 years old, provided the 

 most desirable lacustrine habitat. This 7.5-ha pit had a very irregular 

 shoreline with heavy vegetative cover; contained numerous shrub-thicket 

 vegetated islands in its southern half (upper pit) and graveled islands in 

 its northern half (lower pit); had an abundant food supply dominated by fish 

 and macroinver tebrates; and had a variety of deep and shallow water zones 

 (Figure 80). During the site visit 147 individual birds of 39 species were 



Figure 80. Tanana Ri ver-Upstream showing shoreline diver- 

 sity and vegatative development in the upper pit. 



recorded in the entire study area and four individual beaver, at least two 

 muskrats, and three moose were observed using the pits. The avifauna observ- 

 ed are identified in Table 32. 



The West Fork Tolovana River pit was smaller (4.5 ha) and not as old (5 

 years) but otherwise was similar to the Tanana R i ver-Upstream pit. Avifauna 

 observed at this site are identified in Table 33. Due to the young age and 

 sparse vegetative cover, the avifauna in the disturbed area included few 



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