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Author : Anonim
Publisher : Unknown
Page : 12 pages
File Size : 50,8 Mb
Release : 1994
Category : Beetles
ISBN : MINN:31951D029649472
Author : T. B. Eckberg
Publisher : Forgotten Books
Page : 20 pages
File Size : 46,5 Mb
Release : 2018-09-12
Category : Business & Economics
ISBN : 1390355691
Excerpt from Primary Focus Trees for the Mountain Pine Beetle in the Black Hills Trees with unsuccessful mpb attacks from the previous year were considered pitchouts. The num ber of unsuccessful attacks on the pitchouts varied from 50 to more than 200 per tree, but most pitchouts had over 100 attacks. 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 : J. M. Schmid
Publisher : Unknown
Page : 8 pages
File Size : 51,6 Mb
Release : 1972
Category : Mountain pine beetle
ISBN : MINN:31951D02995767H
Author : J. M. Schmid
Publisher : Unknown
Page : 4 pages
File Size : 47,6 Mb
Release : 1994
Category : Mountain pine beetle
ISBN : MINN:31951D02964942C
Author : Anonim
Publisher : Unknown
Page : 74 pages
File Size : 48,7 Mb
Release : 1994
Category : Forests and forestry
ISBN : UOM:39015051242678
Author : United States. Rocky Mountain Forest and Range Experiment Stations, Fort Collins, Colo
Publisher : Unknown
Page : 246 pages
File Size : 40,6 Mb
Release : 1988
Category : Forests and forestry
ISBN : PSU:000068509484
Author : J. M. Schmid
Publisher : Unknown
Page : 12 pages
File Size : 53,7 Mb
Release : 1995
Category : Microclimatology
ISBN : MINN:31951D029649464
Author : Dale L. Bartos
Publisher : Unknown
Page : 12 pages
File Size : 49,5 Mb
Release : 1998
Category : Forests and forestry
ISBN : OSU:32435066565292
This study was conducted to evaluate the dynamics of endemic populations of mountain pine beetle (Dendroctonus ponderosae Hopkins). In addition, we extended the geographical range of an existing data base recorded in Utah with similar data from Wyoming. This work was accomplished in lodgepole pine (Pinus contorta Dougl. Var. latifolia Engelm.) stands on the Medicine Bow National Forest in south-central Wyoming. Thirty-eight variable-radius paired plots (BAF 10) were measured during the summer of 1987. Host-tree condition and mountain pine beetle infestation characteristics were determined from currently and previously infested trees. Presence and severity of Armillaria root disease and stem pathogens was determined. Tree condition and infestation patterns were similar at this site to those found in earlier studies. Trees selected by endemic mountain pine beetle populations were infested with Comandra blister rust (Cronartium Comandra PK) and root disease (Armillaria spp.). Host-tree condition and mountain pine beetle infestation patterns recorded in this study parallel those identified earlier in Utah and will help land managers identify trees to cut to reduce stand hazard to mountain pine beetle infestation.
Author : Anonim
Publisher : Unknown
Page : 20 pages
File Size : 45,6 Mb
Release : 1999
Category : Mountain pine beetle
ISBN : MINN:31951D02977849H
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.
Author : Anonim
Publisher : Unknown
Page : 310 pages
File Size : 40,5 Mb
Release : 1985
Category : Forests and forestry
ISBN : CUB:U183029135238
Author : Wayne D. Shepperd
Publisher : Unknown
Page : 120 pages
File Size : 48,6 Mb
Release : 2002
Category : Forest ecology
ISBN : MINN:31951D030013979
This paper presents a broad-based synthesis of the general ecology of the ponderosa pine ecosystem in the Black Hills. This synthesis contains information and results of research on ponderosa pine from numerous sources within the Black Hills ecosystem. We discuss the silvical characteristics of ponderosa pine, natural disturbances that govern ecosystem processes, wildlife habitat and management, various silvicultural methods to manage ponderosa pine forests, and watershed management of the Black Hills.
Author : J. M. Schmid
Publisher : Unknown
Page : 8 pages
File Size : 52,7 Mb
Release : 2009
Category : Black Hills National Forest (S.D. and Wyo.)
ISBN : STANFORD:36105133375688
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.
Author : Carolyn Hull Sieg
Publisher : Unknown
Page : 56 pages
File Size : 55,5 Mb
Release : 1996
Category : White-tailed deer
ISBN : MINN:31951D029603852
Author : Anonim
Publisher : Unknown
Page : 1636 pages
File Size : 52,6 Mb
Release : 1995
Category : Government publications
ISBN : UIUC:30112005602260
Author : J. M. Schmid
Publisher : Unknown
Page : 16 pages
File Size : 50,9 Mb
Release : 2005
Category : Black Hills National Forest (S.D. and Wyo.)
ISBN : MINN:31951D03001940E
