Author:
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Category :
Languages : en
Pages :
Book Description
Mountain Pine Beetle Attack In Ponderosa Pine: Comparing Methods For Rating Susceptibility... Research Paper RMRS-RP-26... U.S. Department Of Agriculture... September 2000
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Mountain Pine Beetle Attack in Ponderosa Pine: Comparing Methods for Rating Susceptibility
Author: David C. Chojnacky
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 16
Book Description
Two empirical methods for rating susceptibility of mountain pine beetle attack in ponderosa pine were evaluated. The methods were compared to stand data modeled to objectively rate each sampled stand for susceptibly to bark-beetle attack. Data on bark-beetle attacks, from a survey of 45 sites throughout the Colorado Plateau, were modeled using logistic regression to estimate the probability of attack on individual trees from tree and stand variables. The logistic model allowed flexibility to easily scale results up to a stand level for comparison to the empirical methods. The empirical method, developed by Munson and Anhold, most closely correlated to the logistic regression results. However, the Munson/Anhold method rated all 45 study sites as either moderately or highly susceptible to bark-beetle attack, which raises concern about its lack of sensitivity. Future work on evaluating risk of bark-beetle impact should consider more than stand characteristics.
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 16
Book Description
Two empirical methods for rating susceptibility of mountain pine beetle attack in ponderosa pine were evaluated. The methods were compared to stand data modeled to objectively rate each sampled stand for susceptibly to bark-beetle attack. Data on bark-beetle attacks, from a survey of 45 sites throughout the Colorado Plateau, were modeled using logistic regression to estimate the probability of attack on individual trees from tree and stand variables. The logistic model allowed flexibility to easily scale results up to a stand level for comparison to the empirical methods. The empirical method, developed by Munson and Anhold, most closely correlated to the logistic regression results. However, the Munson/Anhold method rated all 45 study sites as either moderately or highly susceptible to bark-beetle attack, which raises concern about its lack of sensitivity. Future work on evaluating risk of bark-beetle impact should consider more than stand characteristics.
New Publications
Author:
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 138
Book Description
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 138
Book Description
Risk Rating Guide for Mountain Pine Beetle in Black Hills Ponderosa Pine
Author: Robert E. Stevens
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 2
Book Description
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 2
Book Description
Growth of Ponderosa Pine Stands in Relation to Mountain Pine Beetle Susceptibility
Author:
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 20
Book Description
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.
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 20
Book Description
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.
Mountain Pine Beetle Attack in Ponderosa Pine
Author: David C. Chojnacky
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 10
Book Description
Accuracy of Determining Mountain Pine Beetle Attacks in Ponderosa Pine Utilizing Pitch Tubes, Frass, and Entrance Holes
Author: S. A. Mata
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 2
Book Description
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 2
Book Description
Mountain Pine Beetle in Ponderosa Pine
Author: Gene D. Amman
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ISBN:
Category : Beetles
Languages : en
Pages : 12
Book Description
Publisher:
ISBN:
Category : Beetles
Languages : en
Pages : 12
Book Description
Growth of Ponderosa Pine Stands in Relation to Mountain Pine Beetle Susceptibility
Author: R. A. Obedzinski
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 13
Book Description
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 13
Book Description
Vigor of Ponderosa Pine Trees Surviving Mountain Pine Beetle Attack
Author: Merrill R. Kaufmann
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 6
Book Description
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 6
Book Description