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Author : Merrill R. Kaufmann
Publisher : Unknown
Page : 6 pages
File Size : 43,5 Mb
Release : 1984
Category : Mountain pine beetle
ISBN : MINN:31951D029649545
Author : Merrill R. Kaufmann,Robert E. Stevens,Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)
Publisher : Unknown
Page : 0 pages
File Size : 47,5 Mb
Release : 1984
Category : Mountain pine beetle
ISBN : OCLC:247871606
Author : David C. Chojnacky
Publisher : Unknown
Page : 16 pages
File Size : 45,7 Mb
Release : 2000
Category : Mountain pine beetle
ISBN : MINN:31951D03001933B
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.
Author : Charles Sartwell,Robert E. Dolph
Publisher : Unknown
Page : 8 pages
File Size : 51,9 Mb
Release : 1976
Category : Forests and forestry
ISBN : MINN:31951P01093964C
Author : United States. Rocky Mountain Forest and Range Experiment Stations, Fort Collins, Colo
Publisher : Unknown
Page : 364 pages
File Size : 53,5 Mb
Release : 1981
Category : Forests and forestry
ISBN : PSU:000068509477
Author : Anonim
Publisher : Unknown
Page : 62 pages
File Size : 52,7 Mb
Release : 1984
Category : Forests and forestry
ISBN : CHI:34024112
Author : Dale L. Bartos
Publisher : Unknown
Page : 16 pages
File Size : 42,7 Mb
Release : 1989
Category : Forest thinning
ISBN : MINN:31951D02988277P
Author : J. M. Schmid
Publisher : Unknown
Page : 8 pages
File Size : 51,8 Mb
Release : 1972
Category : Mountain pine beetle
ISBN : MINN:31951D02995767H
Author : Anonim
Publisher : Unknown
Page : 12 pages
File Size : 44,9 Mb
Release : 1994
Category : Beetles
ISBN : MINN:31951D029649472
Author : Arthur Lawrence Roe
Publisher : Unknown
Page : 32 pages
File Size : 43,7 Mb
Release : 1970
Category : Lodgepole pine
ISBN : MINN:31951D02988053B
Author : Gene D. Amman
Publisher : Unknown
Page : 12 pages
File Size : 41,6 Mb
Release : 1986
Category : Beetles
ISBN : MINN:31951D02965889L
Author : Philip Cornwell Johnson
Publisher : Unknown
Page : 8 pages
File Size : 46,8 Mb
Release : 1967
Category : Bark beetles
ISBN : MINN:31951D03009353P
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.
Author : Anonim
Publisher : Unknown
Page : 432 pages
File Size : 55,9 Mb
Release : 1991
Category : Forest hydrology
ISBN : MINN:319510030456161
Author : Walter E. Cole
Publisher : Unknown
Page : 52 pages
File Size : 42,5 Mb
Release : 1980
Category : Lodgepole pine
ISBN : IND:30000098225042
Author : James C. Evenden,William Delles Bedard,George R. Struble
Publisher : Unknown
Page : 36 pages
File Size : 43,6 Mb
Release : 1943
Category : Mountain pine beetle
ISBN : UIUC:30112019274122