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 - 9 of 9
10 | 20 | 50 per page
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:

Red spruce in MU20
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU20
Compartment Management Study
selection system
Organisms: red spruce
Location: Penobscot Experimental Forest; Maine
Description: Red spruce in MU20
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:

Person evaluating blowdown in MU23
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU23
Compartment Management Study
shelterwood system
damage
personnel
Organisms: spruce
Location: Penobscot Experimental Forest; Maine
Description: Person evaluating blowdown in MU23
Date:

Image of conifer regeneration in MU29 (3-stage shelterwood)
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU29
Compartment Management Study
shelterwood system
regeneration
Location: Penobscot Experimental Forest; Maine
Description: Image of conifer regeneration in MU29 (3-stage shelterwood)
Date:

Image of conifer regeneration in MU29 (3-stage shelterwood) two years after final harvest of the overstory
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU29
Compartment Management Study
shelterwood system
regeneration
Location: Penobscot Experimental Forest; Maine
Description: Image of conifer regeneration in MU29 (3-stage shelterwood) two years after final harvest of the overstory
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: