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.

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:

Download or read book The Mountain Pine Beetle an Important Enemy of Western Pines written by James C. Evenden and published by . This book was released on 1943 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 Montana Forest Insect and Disease Conditions and Program Highlights written by and published by . This book was released on 1994 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Aerial Photo Techniques for a Recreation Inventory of Mountain Lakes and Streams written by Roscoe B. Herrington and published by . This book was released on 1967 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Method and basic data written by John Martin Miller and published by . This book was released on 1941 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Publications Intermountain Forest and Range Experiment Station written by United States. Forest Service and published by . This book was released on with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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:

Download or read book Jeffrey Pine Beetle written by Richard H. Smith and published by . This book was released on 1971 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Mathematical Model for Predicting Fire Spread in Wildland Fuels written by Richard C. Rothermel and published by . This book was released on 1972 with total page 618 pages. Available in PDF, EPUB and Kindle. Book excerpt: A mathematical fire model for predicting rate of spread and intensity that is applicable to a wide range of wildland fuels and environment is presented. Methods of incorporating mixtures of fuel sizes are introduced by weighting input parameters by surface area. The input parameters do not require a prior knowledge of the burning characteristics of the fuel.

Download or read book Great Basin Station written by Bland Z. Richardson and published by . This book was released on 1971 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book USDA Forest Service Research Paper INT written by and published by . This book was released on 1972 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ponderosa Pine Bibliography II 1966 1970 written by and published by . This book was released on 1974 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: