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 81 - 91 of 91
10 | 20 | 50 per page
Two balsam fir marked for cutting due to "fir bark disease," in MU2 on March 28 1951
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU2
Farm Woodlot Study
selection system
damage
marking
Organisms: balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Two balsam fir marked for cutting due to "fir bark disease," in MU2 on March 28 1951
Date: 3/28/1951

Balsam fir, eastern white pine, red maple, and spruce in MU2 on March 28 1951
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU2
Farm Woodlot Study
selection system
Organisms: balsam fir
eastern white pine
red maple
spruce
Location: Penobscot Experimental Forest; Maine
Description: Balsam fir, eastern white pine, red maple, and spruce in MU2 on March 28 1951
Date: 3/28/1951

Pre-cut stand with patch of trees blown down in December 1950, balsam fir marked, in MU3, about 1950
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU3
Compartment Management Study
selection system
damage
marking
Organisms: balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Pre-cut stand with patch of trees blown down in December 1950, balsam fir marked, in MU3, about 1950
Date: 1950s

Large red spruce and eastern hemlock with a sapling understory of balsam fir in a selection stand, in MU16
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU16
Compartment Management Study
selection system
regeneration
Organisms: red spruce
eastern hemlock
balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Large red spruce and eastern hemlock with a sapling understory of balsam fir in a selection stand, in MU16
Date:

Prolific balsam fir reproduction and some red spruce in a forest opening in a selection stand, in MU16
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU16
Compartment Management Study
selection system
regeneration
Organisms: balsam fir
red spruce
Location: Penobscot Experimental Forest; Maine
Description: Prolific balsam fir reproduction and some red spruce in a forest opening in a selection stand, in MU16
Date:

White spruce 10 inches dbh, balsam fir coming in opening, larger fir are 6 feet tall, in MU2
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU2
Farm Woodlot Study
selection system
regeneration
Organisms: white spruce
balsam fir
Location: Penobscot Experimental Forest; Maine
Description: White spruce 10 inches dbh, balsam fir coming in opening, larger fir are 6 feet tall, in MU2
Date:

Shelterwood silviculture, in MU21
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU21
Compartment Management Study
shelterwood system
Organisms: balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Shelterwood silviculture, in MU21
Date:

6-10 foot tall balsam fir in a 15 year-old opening in MU23
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
regeneration
Organisms: balsam fir
Location: Penobscot Experimental Forest; Maine
Description: 6-10 foot tall balsam fir in a 15 year-old opening in MU23
Date:

Black spruce and balsam fir, in MU5
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU5
Compartment Management Study
selection system
Organisms: black spruce
balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Black spruce and balsam fir, in MU5
Date:

Spruce, eastern white pine, and balsam fir regeneration with a mixedwood overstory in Study 58
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: Study 58
thinning
regeneration
Organisms: spruce
eastern white pine
balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Spruce, eastern white pine, and balsam fir regeneration with a mixedwood overstory in Study 58
Date:

Balsam fir and spruce regeneration
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: regeneration
Organisms: spruce
balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Balsam fir and spruce regeneration
Date: