Collection: | Pacific Northwest Research Station, Alaska Image Archive |
Keywords: |
plant ecology: ecosystems vegetation types, ecotypes |
Location: | Alaska; O'Brien Creek |
Description: | White spruce stand with dominats 13 to 17 inches d.b.h., height 85 to 100 feet, age 150 years. Permafrost, if present, more than 42 inches below the surface. Adjacent to O'Brien Creek, about 12 miles above its junction with the Fortymile River. |
Date: | 1957 |
Collection: | Pacific Northwest Research Station, Alaska Image Archive |
Keywords: |
plant ecology: ecosystems vegetation types, ecotypes |
Location: | Alaska; Kenai Peninsula; Kasilof |
Description: | White spruce-paper birch forest about 120 years old. The spruce with the aluminum holder at the base is 21.3 inches d.b.h. On well-drained land near Kasilof, Kenai Peninsula. |
Date: | 1957 |
Collection: | Pacific Northwest Research Station, Alaska Image Archive |
Keywords: |
plant ecology: ecosystems vegetation types, ecotypes |
Location: | Alaska; Fortymile River |
Description: | White spruce forest on a 22 per cent slope, S 45 degrees W exposure. Dominants are 10 to 16 inches d.b.h., 70 to 90 feet in height, and 150-180 years old. South Fork of the Fortymile River. |
Date: | 1957 |
Collection: | Pacific Northwest Research Station, Alaska Image Archive |
Keywords: |
plant ecology: ecosystems vegetation types, ecotypes |
Location: | Alaska; Knik Arm; Goose Bay |
Description: | Dense growth of Alaska paper birch seedlings on mineral soil in the Goose Bay-Knik area. Used as illustration, Fig. 7, Pg.24, USDA Tech. Bull. 1133. 1956. |
Date: | 1950 |
Collection: | Pacific Northwest Research Station, Alaska Image Archive |
Keywords: |
plant ecology: ecosystems vegetation types, ecotypes |
Location: | Alaska |
Description: | A climax stand of white spruce about 215 years of age. The dominants are 11-20 inches in diameter and 70-80 feet in height. There has been no fire in this stand during the life of the trees now standing. Used as illustration in Station Paper No. 1, AFRC, 1953. |
Date: | 1950 |
Collection: | Pacific Northwest Research Station, Alaska Image Archive |
Keywords: |
plant ecology: ecosystems vegetation types, ecotypes |
Location: | Alaska |
Description: | 150 year old climax white spruce stand on a southwest slope. The dominants are 9 to 16 inches d.b.h. and 70 to 85 feet tall. Used as illustration, Fig. 19, Pg. 64, USDA Tech. Bull No. 1133, March 1956. |
Date: | 1950 |