| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| 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 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
Study 58 thinning regeneration |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | Regenerating stand 14 years after second cut in two-stage overstory removal in shelterwood stand, in Study 58 on March 29 1982 |
| Date: | 3/29/1982 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
Study 58 thinning sign plot |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | "Row Spacing Only, Unfertilized" sign, 5.5 growing seasons after precommercial thinning in plot 21, in Study 58 on March 29 1982 |
| Date: | 3/29/1982 |
| Collection: | Penobscot Experimental Forest Historical Photo Archive |
| Keywords: |
MU58 thinning sign plot |
| Location: | Penobscot Experimental Forest; Maine |
| Description: | "Row Spacing Only, Unfertilized" sign, 5.5 growing seasons after precommercial thinning in plot 23, in Study 58 on March 29 1982 |
| Date: | 3/29/1982 |











