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
You are here: Home > Search Results


*To download images in addition to list, filter to 100 images or fewer.
Displaying items 41 - 56 of 56
10 | 20 | 50 per page
Cat logging in creek, Spur 241. Plugged culvert allowed pool to form on road. Siltation on slash below road.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: hydrology
water conservation, soil conservation and erosion
watershed management
studies of infiltration, run-off and water erosion:effects of forestry practices (polluted water)
Location: Alaska; Prince of Wales Island; Harris River
Description: Cat logging in creek, Spur 241. Plugged culvert allowed pool to form on road. Siltation on slash below road.
Date: 7/2/1959

Harris River: cat logging in creek, Spur 241. Plugged culvert allowed pool to form on road. Siltation on slash below road.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: hydrology
water conservation, soil conservation and erosion
watershed management
studies of infiltration, run-off and water erosion:effects of forestry practices (polluted water)
Location: Alaska; Prince of Wales Island; Harris River
Description: Harris River: cat logging in creek, Spur 241. Plugged culvert allowed pool to form on road. Siltation on slash below road.
Date: 7/2/1959

Harris River: cat logging in creek, Spur 241. Plugged culvert allowed pool to form on road. Siltation on slash below road.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: hydrology
water conservation, soil conservation and erosion
watershed management
studies of infiltration, run-off and water erosion:effects of forestry practices (polluted water)
Location: Alaska; Prince of Wales Island; Harris River
Description: Harris River: cat logging in creek, Spur 241. Plugged culvert allowed pool to form on road. Siltation on slash below road.
Date: 7/2/1959

Harris River: cat logging in creek, Spur 241. Plugged culvert allowed pool to form on road. Siltation on slash below road.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: hydrology
water conservation, soil conservation and erosion
watershed management
studies of infiltration, run-off and water erosion:effects of forestry practices (polluted water)
Location: Alaska; Prince of Wales Island; Harris River
Description: Harris River: cat logging in creek, Spur 241. Plugged culvert allowed pool to form on road. Siltation on slash below road.
Date: 7/2/1959

Harris River: cat logging in creek, Spur 241. Plugged culvert allowed pool to form on road. Siltation on slash below road.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: hydrology
water conservation, soil conservation and erosion
watershed management
studies of infiltration, run-off and water erosion:effects of forestry practices (polluted water)
Location: Alaska; Prince of Wales Island; Harris River
Description: Harris River: cat logging in creek, Spur 241. Plugged culvert allowed pool to form on road. Siltation on slash below road.
Date: 7/2/1959

Picea sitchensis. Koenigs with large spruce log at Harris River.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: systematic botany
embryophyta: siphonogamia: spermatophyta: phanerogams: seed-plants in general: dendrology: coniferae:
Location: Alaska; Prince of Wales Island; Harris River
Description: Picea sitchensis. Koenigs with large spruce log at Harris River.
Date: 7/1959

No filter. Thuja plicata, western red cedar.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: systematic botany
embryophyta: siphonogamia: spermatophyta: phanerogams: seed-plants in general: dendrology: coniferae:
Location: Alaska
Description: No filter. Thuja plicata, western red cedar.
Date: 6/25/1959

Light green filter. Thuja plicata, western red cedar.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: systematic botany
embryophyta: siphonogamia: spermatophyta: phanerogams: seed-plants in general: dendrology: coniferae:
Location: Alaska
Description: Light green filter. Thuja plicata, western red cedar.
Date: 6/25/1959

Pollen in bay at Hollis, taken from M/V Maybeso.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
ecosystems
sexual reproduction
reproductive behaviour
Location: Alaska; Prince of Wales Island; Hollis
Description: Pollen in bay at Hollis, taken from M/V Maybeso.
Date: 6/19/1959

Pollen in bay at Hollis. View taken from M/V Maybeso.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: plant ecology
ecosystems
sexual reproduction
reproductive behaviour
Location: Alaska; Prince of Wales Island; Hollis
Description: Pollen in bay at Hollis. View taken from M/V Maybeso.
Date: 6/19/1959

Picea sitchensis. Spruce on slide at Harris River.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: systematic botany
embryophyta: siphonogamia: spermatophyta: phanerogams: seed-plants in general: dendrology: coniferae:
Location: Alaska; Prince of Wales Island; Harris River
Description: Picea sitchensis. Spruce on slide at Harris River.
Date: 6/1959

Picea sitchensis. Husvik with spruce on slide at Harris River.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: systematic botany
embryophyta: siphonogamia: spermatophyta: phanerogams: seed-plants in general: dendrology: coniferae:
Location: Alaska; Prince of Wales Island; Harris River
Description: Picea sitchensis. Husvik with spruce on slide at Harris River.
Date: 6/1959

Drainage & seedbed study - Area 2 Plot 5 moss covered (in 1957). Photo point: 15.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
natural regeneration
preparatory measures for securing natural regeneration
Location: Alaska
Description: Drainage & seedbed study - Area 2 Plot 5 moss covered (in 1957). Photo point: 15.
Date: 59, 60

Drainage & seedbed study - Area 2 Plot 7 - Mod. slash over mineral soil.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
natural regeneration
preparatory measures for securing natural regeneration
Location: Alaska
Description: Drainage & seedbed study - Area 2 Plot 7 - Mod. slash over mineral soil.
Date: 59 '60 '61

Picea sitchensis. Ernst Pflugbeil beside large spruce at Pleasant Bay. D.B.H. 85.5," no height measurement - rotten top. [Date estimated.]
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: systematic botany
embryophyta: siphonogamia: spermatophyta: phanerogams: seed-plants in general: dendrology: coniferae:
Location: Alaska; Admiralty Island; Pleasant Bay
Description: Picea sitchensis. Ernst Pflugbeil beside large spruce at Pleasant Bay. D.B.H. 85.5," no height measurement - rotten top. [Date estimated.]
Date: 1959

Picea sitchensis. Ernst Pflugbeil beside large spruce at Pleasant Bay. D.B.H. 85.5," no height measurement - rotten top. [Date estimated.]
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: systematic botany
embryophyta: siphonogamia: spermatophyta: phanerogams: seed-plants in general: dendrology: coniferae:
Location: Alaska; Admiralty Island; Pleasant Bay
Description: Picea sitchensis. Ernst Pflugbeil beside large spruce at Pleasant Bay. D.B.H. 85.5," no height measurement - rotten top. [Date estimated.]
Date: 1959