Identifying Ponderosa Pines Infested with Mountain Pine Beetles PDF Download
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Author: William F. McCambridge
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 2
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Book Description
Author: William F. McCambridge
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 2
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Book Description
Author: William F. McCambridge
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 0
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Author: William F. McCambridge
Publisher:
ISBN:
Category : Colorado
Languages : en
Pages : 2
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Author: Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
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ISBN:
Category :
Languages : en
Pages :
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Author: Charles Sartwell
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 8
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Book Description
Author: R. D. Dillman
Publisher:
ISBN:
Category : Aerial photography in forestry
Languages : en
Pages : 56
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Author: J. M. Schmid
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 4
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Author: J. M. Schmid
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ISBN:
Category : Black Hills National Forest (S.D. and Wyo.)
Languages : en
Pages : 8
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Book Description
Mountain pine beetle-killed ponderosa pine trees in three stands of different stocking levels near Bear Mountain in the Black Hills National Forest were surveyed over a 5-year period to determine how long they persisted as unbroken snags. Rate of breakage varied during the first 5 years after MPB infestation: only one tree broke during the first 2 years in the three stands; breakage increased during the third year; the highest percentage of snags broke during the fourth year; and 10% to 14% broke in the fifth year. Cumulatively, snag breakage was 76%, 91%, and 95% in a GSL 80/90, GSL 100/110, and unmanaged stand, respectively. On average, 56% of the snags broke below 25 ft. The rate and height of breakage in mountain pine beetle-killed trees indicates that they are unlikely to persist as suitable snags for more than 5 to 10 years after infestation.
Author:
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ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 20
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Ten-year diameter and basal area growth were determined for partially cut stands at 4 locations. Average diameters in the partially cut plots generally increased by 1 inch or more, while average diameter in the uncut controls increased by 0.9 inches or less. Individual tree growth is discussed in relation to potential susceptibility to mountain pine beetle infestation. Basal area increases ranged from 0.9 to 1.9 ft2/acre/ yr in partially cut plots, while basal area increases in the control plots ranged from 0.4 to 1.4 ft2/acre/yr. Endemic mountain pine beetle infestations and snow breakage accounted for most of the mortality on the plots, which decreased the residual basal area and basal area growth. Increases in basal area are used to estimate the length of time required for various stand densities to reach the susceptibility thresholds for mountain pine beetle infestation. Stand marking may influence future susceptibility to beetle infestations.
Author: Douglas L. Parker
Publisher:
ISBN:
Category : Kaibab National Forest (Ariz.)
Languages : en
Pages : 4
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