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USFS Logo Research Data Archive
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Displaying items 1 - 20 of 22
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Looking through an opening cut in a paper birch stand (slope exposure S 45 W, gradient 26%) across a small valley to a poor black spruce muskeg forest (slope exposure N 25 E, gradient of 50%). Permafrost was encountered at a depth of 8 inch.
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Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types
ecotypes
Location: Alaska; Fairbanks; Deadwood Creek
Description: Looking through an opening cut in a paper birch stand (slope exposure S 45 W, gradient 26%) across a small valley to a poor black spruce muskeg forest (slope exposure N 25 E, gradient of 50%). Permafrost was encountered at a depth of 8 inch.
Date: 6/27/1957

Pure quaking aspen stand in which the dominants are 3 to 4 inches d.b.h., 40 to 50 feet in height and 30 years old. On a slope having an exposure of S 20 W and a gradient of 15%. Near Ester, Fairbanks district.
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Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types
ecotypes
Location: Alaska; Fairbanks; Ester
Description: Pure quaking aspen stand in which the dominants are 3 to 4 inches d.b.h., 40 to 50 feet in height and 30 years old. On a slope having an exposure of S 20 W and a gradient of 15%. Near Ester, Fairbanks district.
Date: 6/20/1957

Black spruce muskeg forest on wet, flat land without permafrost. The dominants average 2 to 3 inches diameter, are 20 to 30 feet in height and 140 years old. Near Houston, west of Wasilla.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Wasilla; Houston
Description: Black spruce muskeg forest on wet, flat land without permafrost. The dominants average 2 to 3 inches diameter, are 20 to 30 feet in height and 140 years old. Near Houston, west of Wasilla.
Date: 1957

Wet meadow, with some open water; incapable of supporting forest growth. Fringed with a narrow strip of black spruce muskeg and with white spruce-paper birch forest on the upland in the background. Kenai Peninsula.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Kenai Peninsula
Description: Wet meadow, with some open water; incapable of supporting forest growth. Fringed with a narrow strip of black spruce muskeg and with white spruce-paper birch forest on the upland in the background. Kenai Peninsula.
Date: 1957

In the foreground, black spruce muskeg forest on a slope with a N 20 degree E exposure. Across a small stream, and beyond, paper birch and quaking aspen on a slope with a S 20 W exposure. Fox Creek Valley. Fairbanks district.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Fairbanks; Fox Creek
Description: In the foreground, black spruce muskeg forest on a slope with a N 20 degree E exposure. Across a small stream, and beyond, paper birch and quaking aspen on a slope with a S 20 W exposure. Fox Creek Valley. Fairbanks district.
Date: 1957

Wet meadow on right, black spruce muskeg on left. The hill and upland in the left background represents commercial forest land supporting white spruce and paper birch. Here, as elsewhere on the Kenai Peninsula, the black spruce type boundaries tend to fo...
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Kenai Peninsula
Description: Wet meadow on right, black spruce muskeg on left. The hill and upland in the left background represents commercial forest land supporting white spruce and paper birch. Here, as elsewhere on the Kenai Peninsula, the black spruce type boundaries tend to fo...
Date: 1957

Black spruce muskeg forest on wet land without permafrost. Dominants average 4 to 7 inches d.b.h., 50 to 35 feet in height and ages run to at least 220 years. Between Kasilof and Soldatna, Kenai Pensula.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Kenai Peninsula
Description: Black spruce muskeg forest on wet land without permafrost. Dominants average 4 to 7 inches d.b.h., 50 to 35 feet in height and ages run to at least 220 years. Between Kasilof and Soldatna, Kenai Pensula.
Date: 1957

Looking along the countour at the contact between the erosional slope (on the left, with paper birch) and the depositional slope (on the right, with black spruce muskeg). Slope exposure, S 25 E. Gradient of erosional slope, 20-30 per cent; gradient of dep...
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Chatanika River
Description: Looking along the countour at the contact between the erosional slope (on the left, with paper birch) and the depositional slope (on the right, with black spruce muskeg). Slope exposure, S 25 E. Gradient of erosional slope, 20-30 per cent; gradient of dep...
Date: 1957

The slope on the left (exposure S 45 W, gradient 26 per cent) bears a good stand of paper birch. The slope on the right (exposure N 25 E, gradient 50 per cent) bears a poor black spruce muskeg forest. The valley bottom is covered with willows. Looking up...
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Fairbanks; Deadwood Creek
Description: The slope on the left (exposure S 45 W, gradient 26 per cent) bears a good stand of paper birch. The slope on the right (exposure N 25 E, gradient 50 per cent) bears a poor black spruce muskeg forest. The valley bottom is covered with willows. Looking up...
Date: 1957

Mature stand of balsam cottonwood on well-drained river alluvium. Dominants are 20 to 28 inches d.b.h., 95 feet in height and 170 to 235 years of age. Matanuska River Valley, above the mouth of King River.
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Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Matanuska Valley; King River
Description: Mature stand of balsam cottonwood on well-drained river alluvium. Dominants are 20 to 28 inches d.b.h., 95 feet in height and 170 to 235 years of age. Matanuska River Valley, above the mouth of King River.
Date: 1957

A balsam poplar-white spruce stand. The oldest poplars are 200 years of age and 30 inches d.b.h. and 75 feet tall. The oldest white spruce trees are over 105 years of age, 13 inches d.b.h. and 70 feet tall. On Matanuska River, near Palmer, 1951. Used as...
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types
ecotypes
Location: Alaska; Matanuska River
Description: A balsam poplar-white spruce stand. The oldest poplars are 200 years of age and 30 inches d.b.h. and 75 feet tall. The oldest white spruce trees are over 105 years of age, 13 inches d.b.h. and 70 feet tall. On Matanuska River, near Palmer, 1951. Used as...
Date: 1951

View of the Copper River Valley, showing a mosaic of forest types, white spruce, quaking aspen, and willow. This pattern reflects the complex fire history of the area. Used as illustration, Fig. 2, Pg. 5 USDA Tech. Bull. 1133 March, 1956.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types
ecotypes
Location: Alaska; Copper River
Description: View of the Copper River Valley, showing a mosaic of forest types, white spruce, quaking aspen, and willow. This pattern reflects the complex fire history of the area. Used as illustration, Fig. 2, Pg. 5 USDA Tech. Bull. 1133 March, 1956.
Date: 1951

Climax white spruce forest along the Nelchina River, marked by eroding bluffs. Along Glenn Highway, at mile 143, looking eastward. 1951. Used as illustration, Fig. 18, Pg. 57 USDA Tech. Bull. 1133 March, 1956.
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Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types
ecotypes
Location: Alaska; Glenn Highway; Nelchina River
Description: Climax white spruce forest along the Nelchina River, marked by eroding bluffs. Along Glenn Highway, at mile 143, looking eastward. 1951. Used as illustration, Fig. 18, Pg. 57 USDA Tech. Bull. 1133 March, 1956.
Date: 1951

White spruce, paper birch, and quaking aspen in the foreground; pure white spruce stands in the background. Well-drained alluvium along the larger rivers represents excellent forest land. Looking westerly across the Copper River Valley, about two miles ups...
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
vegetation types, ecotypes
Location: Alaska; Copper River
Description: White spruce, paper birch, and quaking aspen in the foreground; pure white spruce stands in the background. Well-drained alluvium along the larger rivers represents excellent forest land. Looking westerly across the Copper River Valley, about two miles ups...
Date: 1951

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