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Book Microclimate and Mountain Pine Beetles in Two Ponderosa Pine Stands in the Black Hills Classic Reprint

Download or read book Microclimate and Mountain Pine Beetles in Two Ponderosa Pine Stands in the Black Hills Classic Reprint written by J. M. Schmid and published by Forgotten Books. This book was released on 2019-01-24 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Microclimate and Mountain Pine Beetles in Two Ponderosa Pine Stands in the Black Hills Infestations of mountain pine beetles (dendroctonus ponderosae Hopkins) may be common in unthinned pine stands but are uncommon in thinned stands. Subtle differences in the biotic and abiotic stand conditions may account for the numbers of beetle attacked trees in the two types of stands. The abiotic conditions, generally referred to as microclimate, are thought to play an important role. Epidemics of the mountain pine beetle (mpb) commonly develop in relatively unmanaged stands of pure ponderosa pine (pinus ponderosa Lawson) 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 Growth of Ponderosa Pine Stands in Relation to Mountain Pine Beetle Susceptibility

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.

Book Mountain Pine Beetle Attack in Ponderosa Pine Comparing Methods for Rating Susceptibility

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 Primary Focus Trees for the Mountain Pine Beetle in the Black Hills

Download or read book Primary Focus Trees for the Mountain Pine Beetle in the Black Hills written by and published by . This book was released on 1994 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Research Note RM

Download or read book Research Note RM written by and published by . This book was released on 1992 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Emergence Attack Densities and Seasonal Trends of Mountain Pine Beetle Dendroctonus Ponderosae in the Black Hills

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:

Book Ponderosa Pine Mortality Resulting from a Mountain Pine Beetle Outbreak

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.