Bark Beetle Risk in Mature Ponderosa Pine Forests in Western Montana (Classic Reprint) PDF Download
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Author: Philip Cornwell Johnson
Publisher: Forgotten Books
ISBN: 9781396195853
Category : Business & Economics
Languages : en
Pages : 48
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Book Description
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.
Author: Philip Cornwell Johnson
Publisher: Forgotten Books
ISBN: 9781396195853
Category : Business & Economics
Languages : en
Pages : 48
Get Book Here
Book Description
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.
Author: Philip Cornwell Johnson
Publisher:
ISBN:
Category : Bark beetles
Languages : en
Pages : 44
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Book Description
Author: Philip Cornwell Johnson
Publisher:
ISBN:
Category : Bark beetles
Languages : en
Pages : 0
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Book Description
Author:
Publisher:
ISBN:
Category : Bark beetles
Languages : en
Pages : 32
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Book Description
Author: Philip Cornwell Johnson
Publisher:
ISBN:
Category : Bark beetles
Languages : en
Pages : 8
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Book Description
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: Bruce Erickson
Publisher:
ISBN:
Category : Mountain pine beetle
Languages : en
Pages : 12
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Book Description
Author: John Martin Miller
Publisher: Forgotten Books
ISBN: 9780260820983
Category : Business & Economics
Languages : en
Pages : 398
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Book Description
Excerpt from Biology and Control of the Western Pine Beetle: A Summary of the First Fifty Years of Research This beetle undoubtedly was a factor in the ecology of ponderosa pine stands long before it became known to science. Pine stands that approached maturity were thinned by beetle epidemics, and new trees grew up to replace those that were killed. But, as long as Indians used the forest only for hunting grounds and the first white men were interested only in trapping and livestock ranching, no one cared what happened to the trees. The beetle was of no economic importance until the advent of the lumber industry. Then, as the realization developed that the supply of virgin pine stumpage was limited and that the beetle was hastening exhaustion of the old stands, the western pine beetle became a problem of great importance. The beetle upset logging programs and short ened the life of sawmill communities because it often became active in the woods before loggers reached the timber. It killed the very trees that the lumberman preferred to cut and mill into high quality lumber. Its work earned it the epithet The Pine Beetle Logging Company. 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.
Author: John Martin Miller
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 400
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Book Description
This publication reviews the results of research on the western pine beetle up to July 1, 1952. It shows the progress that has been made in over a half-century of study of this one bark beetle. It also records the trials and errors--the research that ran into blind alleys. The record of this pioneer effort in the field of forest entomology in the United States should be of great help to research workers who are faced with similar problems.
Author: John Martin Miller
Publisher:
ISBN:
Category : Bark beetles
Languages : en
Pages : 312
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Book Description
Author: Philip C. Johnson
Publisher:
ISBN:
Category :
Languages : en
Pages : 7
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Book Description
