Author: Judith E. Pasek
Publisher:
ISBN:
Category :
Languages : en
Pages :
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
Comparison of Risk/hazard Rating Systems for Mountain Pine Beetle in Black Hills Ponderosa Pine Forests
Author: Judith E. Pasek
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Hazard Rating Ponderosa Pine Stands for Mountain Pine Beetles in the Black Hills
Author: J. M. Schmid
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 4
Book Description
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 4
Book Description
Bark Beetle Risk in Mature Ponderosa Pine Forests in Western Montana
Author: Philip Cornwell Johnson
Publisher:
ISBN:
Category : Bark beetles
Languages : en
Pages : 44
Book Description
Publisher:
ISBN:
Category : Bark beetles
Languages : en
Pages : 44
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.
Mountain Pine Beetle-killed Trees as Snags in Black Hills Ponderosa Pine Stands
Author: J. M. Schmid
Publisher:
ISBN:
Category : Black Hills National Forest (S.D. and Wyo.)
Languages : en
Pages : 8
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.
Publisher:
ISBN:
Category : Black Hills National Forest (S.D. and Wyo.)
Languages : en
Pages : 8
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.
Effectiveness of Thinning Ponderosa Pine Stands in Reducing Mountain Pine Beetle-caused Tree Losses in the Black Hills, Preliminary Observations
Author: William F. McCambridge
Publisher:
ISBN:
Category : Forest thinning
Languages : en
Pages : 4
Book Description
Publisher:
ISBN:
Category : Forest thinning
Languages : en
Pages : 4
Book Description
Primary Focus Trees for the Mountain Pine Beetle in the Black Hills
Black Hills National Forest (N.F.), Bugtown Gulch Mountain Pine Beetle and Fuels Project
USDA Forest Service Research Note RM.
Author: Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 426
Book Description
Publisher:
ISBN:
Category : Forests and forestry
Languages : en
Pages : 426
Book Description