Author: EDWIN WALFRED MOGREN
Publisher:
ISBN:
Category :
Languages : en
Pages : 232
Book Description
A STUDY OF SOME ASPECTS OF SUSCEPTIBILITY OF PONDEROSA PINE TO ATTACK BY BLACK HILLS BEETLE.
Author: EDWIN WALFRED MOGREN
Publisher:
ISBN:
Category :
Languages : en
Pages : 232
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 232
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.
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.
A Progress Report of a Study on the Susceptibility of Old-growth Ponderosa Pine in Montana to Bark Beetle Attacks
Author:
Publisher:
ISBN:
Category : Ponderosa pine
Languages : en
Pages : 72
Book Description
Publisher:
ISBN:
Category : Ponderosa pine
Languages : en
Pages : 72
Book Description
Proceedings of the Board of Regents
Author: University of Michigan. Board of Regents
Publisher:
ISBN:
Category :
Languages : en
Pages : 1828
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 1828
Book Description
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
Dissertation Abstracts
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1304
Book Description
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 1304
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
Ecology, Silviculture, and Management of Black Hills Ponderosa Pine
Author: Wayne D. Shepperd
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 120
Book Description
This paper presents a broad-based synthesis of the general ecology of the ponderosa pine ecosystem in the Black Hills. This synthesis contains information and results of research on ponderosa pine from numerous sources within the Black Hills ecosystem. We discuss the silvical characteristics of ponderosa pine, natural disturbances that govern ecosystem processes, wildlife habitat and management, various silvicultural methods to manage ponderosa pine forests, and watershed management of the Black Hills.
Publisher:
ISBN:
Category : Forest ecology
Languages : en
Pages : 120
Book Description
This paper presents a broad-based synthesis of the general ecology of the ponderosa pine ecosystem in the Black Hills. This synthesis contains information and results of research on ponderosa pine from numerous sources within the Black Hills ecosystem. We discuss the silvical characteristics of ponderosa pine, natural disturbances that govern ecosystem processes, wildlife habitat and management, various silvicultural methods to manage ponderosa pine forests, and watershed management of the Black Hills.
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