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USFS Logo Research Data Archive
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Displaying items 1 - 20 of 47
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21- year old blaze made by R.F. Taylor in 1929. Shown opened on neg. no. 383. 26" spruce.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska
Description: 21- year old blaze made by R.F. Taylor in 1929. Shown opened on neg. no. 383. 26" spruce.
Date: 8/1950

21- year old blaze on western hemlock 11" dbh. Plot 1, area 1, Karta Bay.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: 21- year old blaze on western hemlock 11" dbh. Plot 1, area 1, Karta Bay.
Date: 8/1950

30-inch cull spruce girdled on plot 3, area 1. (J. Klein) Karta Bay.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: 30-inch cull spruce girdled on plot 3, area 1. (J. Klein) Karta Bay.
Date: 8/1950

Chain saw used by J. Klein in thinning work, Karta Bay.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Chain saw used by J. Klein in thinning work, Karta Bay.
Date: 8/1950

Corner post plot 1, area 2 corner 4. Stake is still standing but shows deterioration, espl at ground line. Karta Bay.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Corner post plot 1, area 2 corner 4. Stake is still standing but shows deterioration, espl at ground line. Karta Bay.
Date: 8/1950

Crown before thinning plot 1, area 1, Karta Bay. See neg. no. 376 for view after thinning. This is same camera point as neg. 357.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Crown before thinning plot 1, area 1, Karta Bay. See neg. no. 376 for view after thinning. This is same camera point as neg. 357.
Date: 8/1950

Crown before thinning plot 1, area 1. Crown competition had reduced crown ratio below optimum. Karta Bay. Same camera point as neg. no. 355.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Crown before thinning plot 1, area 1. Crown competition had reduced crown ratio below optimum. Karta Bay. Same camera point as neg. no. 355.
Date: 8/1950

Crown condition plot 2, area 1. Same camera point as neg. 369.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Crown condition plot 2, area 1. Same camera point as neg. 369.
Date: 8/1950

Crown density after thinning plot 1, area 1, Karta Bay. Same camera point as 377. See neg. 358 for crown view before thinning.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Crown density after thinning plot 1, area 1, Karta Bay. Same camera point as 377. See neg. 358 for crown view before thinning.
Date: 8/1950

Crown density after thinning plot 1, area 1, to 120 trees per acre. Same camera point as neg. no. 379. About 1/2 of the stems were removed. See neg. 356.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Crown density after thinning plot 1, area 1, to 120 trees per acre. Same camera point as neg. no. 379. About 1/2 of the stems were removed. See neg. 356.
Date: 8/1950

Crown density plot 1, area 1 before thinning. Same as camera point neg. 359. See neg. no. 374 for view after thinning. Karta Bay.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Crown density plot 1, area 1 before thinning. Same as camera point neg. 359. See neg. no. 374 for view after thinning. Karta Bay.
Date: 8/1950

Crown density plot 2, area 1. Same camera point as neg. 368. Karta Bay.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Crown density plot 2, area 1. Same camera point as neg. 368. Karta Bay.
Date: 8/1950

Crown density plot 3, area 1, after thinning to 67% b.a. Noticeable crown release. Thinning to 2/3 b.a. left 54 more trees per acre than on adjacent plot thinned to 120 trees.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Crown density plot 3, area 1, after thinning to 67% b.a. Noticeable crown release. Thinning to 2/3 b.a. left 54 more trees per acre than on adjacent plot thinned to 120 trees.
Date: 8/1950

Crown density plot 3, area 1, after thinning. Almost half the trees were removed freeing the residuals on at least 2 sides.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Crown density plot 3, area 1, after thinning. Almost half the trees were removed freeing the residuals on at least 2 sides.
Date: 8/1950

Crown density plot 3, area 1, before thinning. Very few trees received light on more than 2 sides of their crowns.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Crown density plot 3, area 1, before thinning. Very few trees received light on more than 2 sides of their crowns.
Date: 8/1950

Crown density plot e, area 1, before thinning. Competition resulted in below optimum crown ratios & poor lateral crown development.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Crown density plot e, area 1, before thinning. Competition resulted in below optimum crown ratios & poor lateral crown development.
Date: 8/1950

Density of plot 3 area 1 after thinning to 67% b.a. (L. Zach in photo).
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Density of plot 3 area 1 after thinning to 67% b.a. (L. Zach in photo).
Date: 8/1950

Incipient decay showing at butt of a 10.4" hemlock cut during thinning. Plot 1, area 2. Karta Bay.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Incipient decay showing at butt of a 10.4" hemlock cut during thinning. Plot 1, area 2. Karta Bay.
Date: 8/1950

J. Klein making tree tags on deck of Ranger 6. Residual trees on thinned plots and selected crop trees on control plots were tagged. Karta Bay.
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: J. Klein making tree tags on deck of Ranger 6. Residual trees on thinned plots and selected crop trees on control plots were tagged. Karta Bay.
Date: 8/1950

Large fluted hemlock axe-girdled. On plot 3, area 1. Karta Bay. (L. Zach).
more info/bigger image
Collection: Pacific Northwest Research Station, Alaska Image Archive
Keywords: regeneration and formation of stands
tending of stands and trees
thinnings
Location: Alaska; Prince of Wales Island; Karta Bay
Description: Large fluted hemlock axe-girdled. On plot 3, area 1. Karta Bay. (L. Zach).
Date: 8/1950