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 1 - 20 of 38
10 | 20 | 50 per page
Regenerating stand 14 years after second cut in two-stage overstory removal in shelterwood stand, MU21 on March 29 1982
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU21
Compartment Management Study
shelterwood system
regeneration
Location: Penobscot Experimental Forest; Maine
Description: Regenerating stand 14 years after second cut in two-stage overstory removal in shelterwood stand, MU21 on March 29 1982
Date: 3/29/1982

Management unit sign and stand data - unthinned uniform shelterwood stand in MU23 on March 29 1982
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
sign
Location: Penobscot Experimental Forest; Maine
Description: Management unit sign and stand data - unthinned uniform shelterwood stand in MU23 on March 29 1982
Date: 3/29/1982

Completed spacing favoring spruce, uniform shelterwood stand, in MU23 on March 29 1982
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
thinning
release
Organisms: spruce
Location: Penobscot Experimental Forest; Maine
Description: Completed spacing favoring spruce, uniform shelterwood stand, in MU23 on March 29 1982
Date: 3/29/1982

Completed uniform shelterwood spacing job favoring spruce with a few hardwoods in MU23 on March 29 1982
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
personnel
thinning
release
Organisms: spruce
Location: Penobscot Experimental Forest; Maine
Description: Completed uniform shelterwood spacing job favoring spruce with a few hardwoods in MU23 on March 29 1982
Date: 3/29/1982

Two-meter-wide corridor-only spacing (row thinning) in an uniform shelterwood stand on a somewhat poorly to poorly drained site, in MU23 on March 29 1982
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
thinning
Organisms: spruce
balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Two-meter-wide corridor-only spacing (row thinning) in an uniform shelterwood stand on a somewhat poorly to poorly drained site, in MU23 on March 29 1982
Date: 3/29/1982

Looking across two-meter-wide corridor-only spacing (row thinning) in an uniform shelterwood stand in MU23 on March 29 1982
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
thinning
Location: Penobscot Experimental Forest; Maine
Description: Looking across two-meter-wide corridor-only spacing (row thinning) in an uniform shelterwood stand in MU23 on March 29 1982
Date: 3/29/1982

Close-up of corridor-only spacing (row thinning) in an uniform shelterwood stand, in MU23 on March 29 1982
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
thinning
Location: Penobscot Experimental Forest; Maine
Description: Close-up of corridor-only spacing (row thinning) in an uniform shelterwood stand, in MU23 on March 29 1982
Date: 3/29/1982

Management unit sign, unspaced trees behind and trees spaced 2-by-3-meters across the road on the right, in MU23 on March 29 1982
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
thinning
sign
Organisms: spruce
Location: Penobscot Experimental Forest; Maine
Description: Management unit sign, unspaced trees behind and trees spaced 2-by-3-meters across the road on the right, in MU23 on March 29 1982
Date: 3/29/1982

Spruce sapling next to a range pole in a stand regenerated with uniform shelterwood, in MU23 in March 1981
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
regeneration
Organisms: spruce
Location: Penobscot Experimental Forest; Maine
Description: Spruce sapling next to a range pole in a stand regenerated with uniform shelterwood, in MU23 in March 1981
Date: Mar-81

Sign for MU23 showing years of harvest entries, photo taken in 1980s
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
sign
Location: Penobscot Experimental Forest; Maine
Description: Sign for MU23 showing years of harvest entries, photo taken in 1980s
Date: 1980s

Regeneration three years after final overstory removal in uniform shelterwood, in MU23 in 1975
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
regeneration
Organisms: spruce
balsam fir
eastern white pine
red maple
Location: Penobscot Experimental Forest; Maine
Description: Regeneration three years after final overstory removal in uniform shelterwood, in MU23 in 1975
Date: 1975

Regeneration three years after final overstory removal in uniform shelterwood, person with snow machine, in MU23 in 1975
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
equipment
regeneration
personnel
Organisms: spruce
balsam fir
eastern white pine
Location: Penobscot Experimental Forest; Maine
Description: Regeneration three years after final overstory removal in uniform shelterwood, person with snow machine, in MU23 in 1975
Date: 1975

Regeneration three years after final overstory removal in uniform shelterwood, snow machine, in MU23 in 1975
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
equipment
regeneration
Organisms: spruce
balsam fir
eastern white pine
red maple
Location: Penobscot Experimental Forest; Maine
Description: Regeneration three years after final overstory removal in uniform shelterwood, snow machine, in MU23 in 1975
Date: 1975

A person standing with regeneration three years after final overstory removal in uniform shelterwood, in MU23 in 1975
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
personnel
regeneration
Organisms: spruce
balsam fir
eastern white pine
red maple
Location: Penobscot Experimental Forest; Maine
Description: A person standing with regeneration three years after final overstory removal in uniform shelterwood, in MU23 in 1975
Date: 1975

Regeneration three years after final overstory removal in uniform shelterwood, person with snow machine, in MU23 in 1975
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
personnel
regeneration
equipment
Organisms: spruce
balsam fir
eastern white pine
red maple
Location: Penobscot Experimental Forest; Maine
Description: Regeneration three years after final overstory removal in uniform shelterwood, person with snow machine, in MU23 in 1975
Date: 1975

Regeneration three years after final overstory removal in uniform shelterwood, in MU23 in 1975
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
regeneration
Organisms: spruce
balsam fir
eastern white pine
Location: Penobscot Experimental Forest; Maine
Description: Regeneration three years after final overstory removal in uniform shelterwood, in MU23 in 1975
Date: 1975

Snow machine on a forest road driving through a pine and spruce stand near in MU23 in 1975
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
equipment
road
Organisms: pine
spruce
Location: Penobscot Experimental Forest; Maine
Description: Snow machine on a forest road driving through a pine and spruce stand near in MU23 in 1975
Date: 1975

After second cut in a two-stage shelterwood, in MU21 on October 1968
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU21
Compartment Management Study
shelterwood system
Location: Penobscot Experimental Forest; Maine
Description: After second cut in a two-stage shelterwood, in MU21 on October 1968
Date: Oct-68

Immediately after second cut in two-stage shelterwood with incomplete overstory removal, in MU21 on October 1968
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU21
Compartment Management Study
shelterwood system
Location: Penobscot Experimental Forest; Maine
Description: Immediately after second cut in two-stage shelterwood with incomplete overstory removal, in MU21 on October 1968
Date: Oct-68

Results of the second cut of three-stage uniform shelterwood treatment, in MU29 in October 1968
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU29
Compartment Management Study
shelterwood system
personnel
Location: Penobscot Experimental Forest; Maine
Description: Results of the second cut of three-stage uniform shelterwood treatment, in MU29 in October 1968
Date: Oct-68