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Distribution Of Bark Beetle Attacks On Ponderosa Pine Trees In Montana
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Book Synopsis Distribution of Bark Beetle Attacks on Ponderosa Pine Trees in Montana by : Philip Cornwell Johnson
Download or read book Distribution of Bark Beetle Attacks on Ponderosa Pine Trees in Montana written by Philip Cornwell Johnson and published by . This book was released on 1967 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The boles of 71 mature ponderosa pine trees killed by Dendroctonus brevicomis LeConte (Coleoptera: Scolytidae) were analyzed to determine the distribution of the attacks by endemic populations of this bark beetle and those of several phloem -feeding associates. The longitudinal -circumferential distribution of the attacks fitted dia- grammatically into four distinguishable bole infestation patterns. The characteristics of the patterns and similarities with comparable ?attacks of D. brevicomis in northeastern California are discussed.
Book Synopsis Distribution of Bark Beetle Attcks on Ponderosa Pine Trees in Montana by : Philip C. Johnson
Download or read book Distribution of Bark Beetle Attcks on Ponderosa Pine Trees in Montana written by Philip C. Johnson and published by . This book was released on 1967 with total page 7 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Distribution of Bark Beetle Attacks on Ponderosa Pine Trees in Montana by : Philip Cornwell Johnson
Download or read book Distribution of Bark Beetle Attacks on Ponderosa Pine Trees in Montana written by Philip Cornwell Johnson and published by . This book was released on 1967 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The boles of 71 mature ponderosa pine trees killed by Dendroctonus brevicomis LeConte (Coleoptera: Scolytidae) were analyzed to determine the distribution of the attacks by endemic populations of this bark beetle and those of several phloem -feeding associates. The longitudinal -circumferential distribution of the attacks fitted dia- grammatically into four distinguishable bole infestation patterns. The characteristics of the patterns and similarities with comparable ?attacks of D. brevicomis in northeastern California are discussed.
Book Synopsis Bark Beetle Risk in Mature Ponderosa Pine Forests in Western Montana by : Philip Cornwell Johnson
Download or read book Bark Beetle Risk in Mature Ponderosa Pine Forests in Western Montana written by Philip Cornwell Johnson and published by . This book was released on 1972 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bark Beetle Risk in Mature Ponderosa Pine Forests in Western Montana (Classic Reprint) by : Philip Cornwell Johnson
Download or read book Bark Beetle Risk in Mature Ponderosa Pine Forests in Western Montana (Classic Reprint) written by Philip Cornwell Johnson and published by Forgotten Books. This book was released on 2018-09-12 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Bark Beetle Risk in Mature Ponderosa Pine Forests in Western Montana Objectives of the study were to be achieved by annually measuring the mortality of ponderosa pine trees caused by the pine beetle over a 10-year period following the single initial risk rating of the trees. For this purpose, 35 plots having a combined net timbered area of 553 acres were established between 1948 and 1958 in widely scattered stands of virgin mature ponderosa pine in Montana west of the Continental Divide. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Book Synopsis A Progress Report of a Study on the Susceptibility of Old-growth Ponderosa Pine in Montana to Bark Beetle Attacks by :
Download or read book A Progress Report of a Study on the Susceptibility of Old-growth Ponderosa Pine in Montana to Bark Beetle Attacks written by and published by . This book was released on 1962 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Progress Report of a Study on the Susceptibility of Old-growth Ponderosa Pine in Montana to Bark Beetle Attacks by :
Download or read book A Progress Report of a Study on the Susceptibility of Old-growth Ponderosa Pine in Montana to Bark Beetle Attacks written by and published by . This book was released on 1962 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mountain Pine Beetle Attack in Ponderosa Pine: Comparing Methods for Rating Susceptibility by : David C. Chojnacky
Download or read book Mountain Pine Beetle Attack in Ponderosa Pine: Comparing Methods for Rating Susceptibility written by David C. Chojnacky and published by . This book was released on 2000 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Book Synopsis Status of Bark Beetle Infestations in Second-growth Ponderosa Pine Stands, Bureau of Land Management Lands Garnet Mountains, Montana by : Mark D. McGregor
Download or read book Status of Bark Beetle Infestations in Second-growth Ponderosa Pine Stands, Bureau of Land Management Lands Garnet Mountains, Montana written by Mark D. McGregor and published by . This book was released on 1973 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountain pine beetle infestations have increased in second-growth ponderosa pine stands in the Garnet Mountains since 1971. The extremely dry 1973 season resulted in an increase of Ips engraver beetle activity that was responsible for over half of the tree mortality in 1973. Commercial thinning is recommended to alleviate the problem.
Book Synopsis Ponderosa Pine Mortality and Bark Beetle-host Dynamics Following Prescribed and Wildland Fires in the Northern Rocky Mountains, USA by : Ryan Stephen Davis
Download or read book Ponderosa Pine Mortality and Bark Beetle-host Dynamics Following Prescribed and Wildland Fires in the Northern Rocky Mountains, USA written by Ryan Stephen Davis and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ponderosa pine delayed mortality, and bark beetle attacks and emergence were monitored on 459 trees for 3 years following one prescribed fire in Idaho and one wildland fire in Montana. Resin flow volume (ml) was measured on 145 fire-injured ponderosa pine 2 and 3 years post-fire. Logistic regression was used to construct two predictive ponderosa pine mortality models, and two predictive bark beetle-attack models. Post-fire delayed tree mortality was greater with the presence of primary bark beetles independent of diameter at breast height (DBH) (cm), and was greater in smaller diameter trees most likely due to direct effects of fire-caused injuries; mortality was lower in trees with less percent bud kill (PBK). The frequency of bark beetle attack was greater in trees with less percent bud kill and greater bole char height proportion (CHIP). Attack frequency was also greater on trees with higher percent bud kill and greater diameter at breast height. Classification tables for all predictive models were presented for application in post-fire management development. Multivariate ANOVA analyses were used to describe the effects of morphological and fire-injury variables on ponderosa pine resin production, and bark beetle attack preference and emergence. Resin production (ml) was significantly greater on burned than unburned trees. Resin flow increased significantly between June and July 1 year following fire and from June to August 2 years following fire. Resin flow was lower on the north bole aspect than the south and west aspects of unburned trees. Resin flow of burned trees significantly increased through the summer and was greatest in trees with high pre-fire live crown length (m) (LCL). Resin flow of unburned trees differed significantly by year, month, bole aspect, and live crown length. Resin increased by month and live crown length, decreased from 2005 to 2006, and was less on the northern bole aspect than all other aspects. Bark beetles preferred to attack fire-injured trees, especially within bole-scorched areas. No significant differences in bark beetle emergence were found between fire-injured and non fire-injured trees. On burned sites, beetle emergence was greatest from larger diameter trees with less severe fire injury. Western pine beetle (Dendroctonus brevicomis LeConte) had the greatest emergence from fire-injured ponderosa pine, and Ips pini (Say) had significantly greater emergence from non fire-injured ponderosa pine.
Book Synopsis Bark Beetles in California Conifers by :
Download or read book Bark Beetles in California Conifers written by and published by . This book was released on 2014 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assessment and Response to Bark Beetle Outbreaks in the Rocky Mountain Area by : United States. Forest Health Protection
Download or read book Assessment and Response to Bark Beetle Outbreaks in the Rocky Mountain Area written by United States. Forest Health Protection and published by . This book was released on 1998 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Montana Forest Pest Conditions and Program Highlights by :
Download or read book Montana Forest Pest Conditions and Program Highlights written by and published by . This book was released on 1989 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Forest Service Research Note INT by :
Download or read book U.S. Forest Service Research Note INT written by and published by . This book was released on 1966 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bark Beetle Risk in Mature Ponderosa Pine Forests in Western Montana by :
Download or read book Bark Beetle Risk in Mature Ponderosa Pine Forests in Western Montana written by and published by . This book was released on 1972 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis U.S. Forest Service Research Note INT. by : Intermountain Forest and Range Experiment Station (Ogden, Utah)
Download or read book U.S. Forest Service Research Note INT. written by Intermountain Forest and Range Experiment Station (Ogden, Utah) and published by . This book was released on 1966 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Bark Beetle Risk in Mature Ponderosa Pine Forests in Western Montana by : Philip Cornwell Johnson
Download or read book Bark Beetle Risk in Mature Ponderosa Pine Forests in Western Montana written by Philip Cornwell Johnson and published by . This book was released on 1972 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
