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USFS Logo Research Data Archive
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Displaying items 1 - 8 of 8
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A quaking aspen-white spruce-black spruce stand approximately 65 years of age. The dominant quaking aspen trees are 6-8" dbh & the spruce trees, which appear in understory, are 2-3 inches dbh & 15-20 feet in height.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types
ecotypes
Location: Alaska
Description: A quaking aspen-white spruce-black spruce stand approximately 65 years of age. The dominant quaking aspen trees are 6-8" dbh & the spruce trees, which appear in understory, are 2-3 inches dbh & 15-20 feet in height.
Date: 1950

An excellent pole stand of Alaska white birch w/an understory of white spruce.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types
ecotypes
Location: Alaska; Interior
Description: An excellent pole stand of Alaska white birch w/an understory of white spruce.
Date: 1950

A 65-year-old quaking aspen stand with an understory of black spruce and white spruce. The dominants are 4 to 9 inches d.b.h. and 45 to 50 feet tall. The spruce trees in the understory are 2 to 4 inches d.b.h. and 25 to 30 feel tall. Arrows point to aspen.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types
ecotypes
Location: Alaska
Description: A 65-year-old quaking aspen stand with an understory of black spruce and white spruce. The dominants are 4 to 9 inches d.b.h. and 45 to 50 feet tall. The spruce trees in the understory are 2 to 4 inches d.b.h. and 25 to 30 feel tall. Arrows point to aspen.
Date: 1950

A 65-year-old quaking aspen stand. The dominants are 6 to 11 inches d.b.h. and 65 feet tall. A light surface fire killed all understory white spruce in 1947. Kenai Peninsula, 1950. Used as illustration, Fig. 8, Pg. 25 USDA Tech. Bull. 1133 March, 1956. Pl.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types
ecotypes
Location: Alaska; Kenai
Description: A 65-year-old quaking aspen stand. The dominants are 6 to 11 inches d.b.h. and 65 feet tall. A light surface fire killed all understory white spruce in 1947. Kenai Peninsula, 1950. Used as illustration, Fig. 8, Pg. 25 USDA Tech. Bull. 1133 March, 1956. Pl.
Date: 1950

A 55-year-old stand of black spruce. Dominants are 2 to 4 inches d.b.h. and about 15 feet tall. Snags are relicts of 2 fire-killed stands. The last fire killed a pole stand of black spruce and an earlier fire killed a stand of white spruce containing tree...
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Interior
Description: A 55-year-old stand of black spruce. Dominants are 2 to 4 inches d.b.h. and about 15 feet tall. Snags are relicts of 2 fire-killed stands. The last fire killed a pole stand of black spruce and an earlier fire killed a stand of white spruce containing tree...
Date: 1950

A white spruce-Alaska paper birch stand. Approximately 110 years old. Used as illustration, Fig. 13, Pg. 41, USDA Tech. Bull. 1133, 1956. Plate 4, pg. 18, AFRC Station Paper No. 1, Oct 1953.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Interior
Description: A white spruce-Alaska paper birch stand. Approximately 110 years old. Used as illustration, Fig. 13, Pg. 41, USDA Tech. Bull. 1133, 1956. Plate 4, pg. 18, AFRC Station Paper No. 1, Oct 1953.
Date: 1950

A 20-year-old quaking aspen stand. The dominants are 2 to 3 inches d.b.h. and 25 to 30 feet tall. Used as illustration, Fig. 14, Pg. 46, USDA Tech. Bull. 1133.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Interior
Description: A 20-year-old quaking aspen stand. The dominants are 2 to 3 inches d.b.h. and 25 to 30 feet tall. Used as illustration, Fig. 14, Pg. 46, USDA Tech. Bull. 1133.
Date: 1950

A quaking aspen-white spruce stand in which the dominants quaking aspen trees are approximately 115 years of age, 8 to 12 inches d.b.h. and 60 feet tall. The white spruce trees are 5 to 11 inches d.b.h. and 40 to 50 feet tall. Much of the quaking aspen is...
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Interior
Description: A quaking aspen-white spruce stand in which the dominants quaking aspen trees are approximately 115 years of age, 8 to 12 inches d.b.h. and 60 feet tall. The white spruce trees are 5 to 11 inches d.b.h. and 40 to 50 feet tall. Much of the quaking aspen is...
Date: 1950