Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

USFS Logo Research Data Archive

*To download images in addition to list, filter to 100 images or fewer.
Displaying items 1 - 1 of 1
10 | 20 | 50 per page
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.
more info/bigger image
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