Ames Creek: Seedtree Block 



Description 



This area was originally horse- logged as a shelterwood in 1935, then accidentally 

 burned over in the fall of 1936. The subsequent salvage of fire-killed trees left a 

 seed-tree stand of four to six western white pine trees per acre. The area is 11.5 

 acres in size, and the exposure is generally southwesterly ( Abies grandis/Pachistima 

 habitat type) with some northwesterly ( Thuj a-Tsuga/Pachistima habitat type) aspects. 

 Mature stands border the upper edge of the area on the north and east. 



Results 



The Ames Creek area regenerated rather slowly for the first 15 years after logging 

 (fig. 5). At the end of this period, 60 percent of the area was stocked with "any- 

 species." From 1950 to 1955, stocking increased to 96 percent and the number of seed- 

 lings per acre increased by threefold. Grand fir, the most abundant species in the 

 adjacent stands, comprised 60 percent of the stand 20 years after logging. Hemlock and 

 white pine seedlings were second and third in abundance. A small component of redcedar, 

 Douglas-fir and larch completed the stand. 



The rapid increase in regeneration establishment from 1950 to 1955 probably resulted 

 from favorable summer weather in 1948. Precipitation that year was well above normal 

 for July, and temperatures averaged 2 to 3 degrees below normal for July and August. 

 Seedlings which germinated during this favorable year were probably -not' recorded in 

 1950 as "established" seedlings. 



Hemlock and redcedar reproduction was restricted to the northwesterly aspect of a 

 spur ridge which extends through the area. The predominant southwesterly slopes became 

 covered by a dense growth of Ceanothus ; under this competition, western white pine 

 seedlings were spindly and of poor vigor compared to the grand fir. 



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