Download or read book Vigor of Ponderosa Pine Trees Surviving Mountain Pine Beetle Attack written by Merrill R. Kaufmann and published by . This book was released on 1984 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mountain Pine Beetle in Ponderosa Pine written by Gene D. Amman and published by . This book was released on 1986 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Containment of Small Group Infestations of the Mountain Pine Beetle in Ponderosa Pine written by J. M. Schmid and published by . This book was released on 1989 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Silvicultural and direct control of mountain pine beetle in second growth ponderosa pine written by Charles Sartwell and published by . This book was released on 1976 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Growth of Ponderosa Pine Stands in Relation to Mountain Pine Beetle Susceptibility written by and published by . This book was released on 1999 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Some Mountain Pine Beetle Infestation Characteristics in Dwarf Mistletoe infected and Uninfected Ponderosa Pine written by William F. McCambridge and published by . This book was released on 1980 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mountain Pine Beetle in Front Range Ponderosa Pine written by and published by . This book was released on 1974 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mountain Pine Beetle killed Trees as Snags in Black Hills Ponderosa Pine Stands written by J. M. Schmid and published by . This book was released on 2009 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
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.
Download or read book Accuracy of Determining Mountain Pine Beetle Attacks in Ponderosa Pine Utilizing Pitch Tubes Frass and Entrance Holes written by S. A. Mata and published by . This book was released on 1972 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ponderosa Pine Mortality Resulting from a Mountain Pine Beetle Outbreak written by William F. McCambridge and published by . This book was released on 1982 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt: From 1965 to 1978, mountain pine beetles killed 25% of the pines taller than 4.5 feet in a study area in north-central Colorado. Average basal area was reduced from 92 to 58 square feet per acre. Mortality increased with tree diameter up to about 9 inches d.b.h. Larger trees appeared to be killed at random. Mortality was directly related to number of trees per acre and presence of dwarf mistletoe, but not to site index, elevation, and percent Douglas-fir in the stand.
Download or read book Mountain Pine Beetle Infestation Characteristics in Ponderosa Pine Kaibab Plateau Arizona 1975 1977 written by Douglas L. Parker and published by . This book was released on 1979 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Microclimate and Mountain Pine Beetles in Two Ponderosa Pine Stands in the Black Hills written by J. M. Schmid and published by . This book was released on 1995 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Emergence Attack Densities and Seasonal Trends of Mountain Pine Beetle Dendroctonus Ponderosae in the Black Hills written by J. M. Schmid and published by . This book was released on 1972 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Treatment Height for Mountain Pine Beetles in Front Range Ponderosa Pine written by William F. McCambridge and published by . This book was released on 1972 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effectiveness of Thinning Ponderosa Pine Stands in Reducing Mountain Pine Beetle caused Tree Losses in the Black Hills Preliminary Observations written by William F. McCambridge and published by . This book was released on 1982 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Identifying Ponderosa Pines Infested with Mountain Pine Beetles written by William F. McCambridge and published by . This book was released on 1974 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:
