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USFS Logo Research Data Archive
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Displaying items 1 - 9 of 9
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Balsam fir thicket on December 3 1958
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Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: release
Organisms: balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Balsam fir thicket on December 3 1958
Date: 12/3/1958

Balsam fir thicket on December 3 1958
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: release
Organisms: balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Balsam fir thicket on December 3 1958
Date: 12/3/1958

11-inch dbh red maple and 23-inch dbh eastern hemlock marked to release 11-inch dbh red spruce, photo point #5 (permanent sample plot 6/1) in MU13 on July 5 1956
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU13
Compartment Management Study
diameter-limit cut
marking
release
plot
photo point
Organisms: red maple
eastern hemlock
red spruce
Location: Penobscot Experimental Forest; Maine
Description: 11-inch dbh red maple and 23-inch dbh eastern hemlock marked to release 11-inch dbh red spruce, photo point #5 (permanent sample plot 6/1) in MU13 on July 5 1956
Date: 7/5/1956

Eastern hemlock - hardwood stand before cutting, 9-inch dbh red maple and 12-inch dbh American beech marked for cutting, 14-inch dbh hemlock kept as future sawlog tree, balsam fir and beech regeneration, photo point #2 (on MU boundary behind permanent sample plot 1/1) in MU24 on May 24 1955
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU24
Compartment Management Study
diameter-limit cut
marking
plot
release
regeneration
photo point
Organisms: eastern hemlock
red maple
American beech
balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Eastern hemlock - hardwood stand before cutting, 9-inch dbh red maple and 12-inch dbh American beech marked for cutting, 14-inch dbh hemlock kept as future sawlog tree, balsam fir and beech regeneration, photo point #2 (on MU boundary behind permanent sample plot 1/1) in MU24 on May 24 1955
Date: 5/24/1955

Overtopping gray birch and red maple cut to release softwood reproduction, along road to boat landing on August 2 1954
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: regeneration
release
Organisms: gray birch
red maple
Location: Penobscot Experimental Forest; Maine
Description: Overtopping gray birch and red maple cut to release softwood reproduction, along road to boat landing on August 2 1954
Date: 8/2/1954

Weeding with sodium arsenite tabs. Tab being inserted in grey birch to release white spruce sapling, on August 2 1954
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: release
Organisms: gray birch
white spruce
Location: Penobscot Experimental Forest; Maine
Description: Weeding with sodium arsenite tabs. Tab being inserted in grey birch to release white spruce sapling, on August 2 1954
Date: 8/2/1954

Sections from two balsam fir trees, section on left is from tree released 10 years ago (grew 4.5 inches from a dbh of 6.5 inches in 1944 to 11.0 inches in 1954), section on right shows last 10 years of growth of tree that was not released (grew 0.6 inches in dbh in the last decade), on June 28 1954
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: release
Organisms: balsam fir
Location: Penobscot Experimental Forest; Maine
Description: Sections from two balsam fir trees, section on left is from tree released 10 years ago (grew 4.5 inches from a dbh of 6.5 inches in 1944 to 11.0 inches in 1954), section on right shows last 10 years of growth of tree that was not released (grew 0.6 inches in dbh in the last decade), on June 28 1954
Date: 7/28/1954

Aspen marked for cutting to release balsam fir and spruce, photo point #4 in MU2 on July 16 1954
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU2
Farm Woodlot Study
selection system
marking
release
photo point
Organisms: aspen
balsam fir
spruce
Location: Penobscot Experimental Forest; Maine
Description: Aspen marked for cutting to release balsam fir and spruce, photo point #4 in MU2 on July 16 1954
Date: 7/16/1954

Chance for timber stand improvement by removing cull 14-inch dbh maple to release 3-inch dbh eastern hemlock, photo point #5 (looking north 50 degrees east) in MU7 on August 14 1952
more info/bigger image
Collection: Penobscot Experimental Forest Historical Photo Archive
Keywords: MU7
Farm Woodlot Study
selection system
timber stand improvement
release
photo point
Organisms: eastern hemlock
maple
Location: Penobscot Experimental Forest; Maine
Description: Chance for timber stand improvement by removing cull 14-inch dbh maple to release 3-inch dbh eastern hemlock, photo point #5 (looking north 50 degrees east) in MU7 on August 14 1952
Date: 8/14/1952