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Author : K. Dave Coates,T. Glover,B. Henderson
Publisher : Unknown
Page : 52 pages
File Size : 45,6 Mb
Release : 2009
Category : Conifers
ISBN : MINN:31951D03026081Z
"Mountain Pine Beetle Program Project # 7.22".
Author : Markus Schnorbus
Publisher : Unknown
Page : 40 pages
File Size : 40,5 Mb
Release : 2011
Category : Forest hydrology
ISBN : MINN:31951D03276087F
The current synthesis is a review of research examining the effects of large-scale mountain pine beetle (MPB)-related disturbance conducted predominantly over the past five years. The emphasis is on research that explicitly examines the impact of beetle kill (or biotic disturbance in general) and the cumulative effects of large scale salvage harvesting operations in response to beetle kill. In general, forest disturbance has been found to increase snow accumulation and melt, reduce interception loss and evaporation, and increase runoff and stream flow.--Document.
Author : Anonim
Publisher : Unknown
Page : 328 pages
File Size : 51,5 Mb
Release : 2016
Category : Forests and forestry
ISBN : UCBK:C112277093
Author : Markus Schnorbus
Publisher : Unknown
Page : 128 pages
File Size : 53,6 Mb
Release : 2011
Category : Forest hydrology
ISBN : 1100183140
Author : K. Runzer
Publisher : Unknown
Page : 80 pages
File Size : 41,9 Mb
Release : 2008
Category : Nature
ISBN : UIUC:30112101885363
"A recent survey of mountain pine beetle (MPB) attack in mature and immature pine leading stands indicated that attack rate was a function of tree size, age and stand density. However, the temporal dynamics of MPB attack in mature and immature stands, as well as the release of the regeneration layer or secondary structure under a dying canopy, are poorly understood. The primary objectives of this study were to i) investigate temporal and spatial aspects of MPB attack, ii) investigate regeneration dynamics (mortality and growth) of post-beetle attack, iii) model growth and yield with actual mortality and regeneration metrics, iv) describe economic opportunities of harvest scheduling with respect to post-MPB stand structure and v) develop improved management and regeneration options."--Document.
Author : S. A. Mata
Publisher : Unknown
Page : 24 pages
File Size : 41,6 Mb
Release : 2003
Category : Forests and forestry
ISBN : MINN:31951D03001922G
Periodic diameter and basal area growth were determined for partially cut stands of lodgepole pine at five locations over approximately 10 year periods. After cutting, average diameters in the partially cut plots generally increased by 0.8 inches or more, while average diameter in the uncut controls increased by 0.6 inches or less. Diameter growth in the partially cut plots was generally significantly greater than diameter growth in the controls. Individual tree growth is discussed in relation to potential susceptibility to mountain pine beetle infestation. Basal area decreased in three of the four GSL (growing stock level) 40 stands because of windthrow. Basal area generally increased >1.0 ft 2 / acre/year in partially cut plots except in the GSL 40 stands with substantial windthrow and one GSL 100 with an Armillaria infection pocket. Basal area increases in the control plots ranged from 0.2 to 1.1 ft 2 /acre/year, although the one control with a BA growth rate of 1.1 ft 2 /acre/year had a relatively low initial BA. Data from the stands are employed in the susceptibility rating methods of Amman et al.(1977), Shore and Safranyik (1992),and Anhold et al. (1996 to determine stand susceptibility and the results discussed in terms of general applicability of these methods to partially cut stands. Basal area growth is used to estimate the length of time required for various stand densities to reach specific susceptibility thresholds for mountain pine beetle infestation. Several of the GSL 40 stands are not projected to reach the susceptibility thresholds in 100 years because of windthrow. Barring mortality 1%,GSL 80 stands are estimated to reach the basal area threshold of 120 ft 2 per acre in
Author : Walter E. Cole,Gene D. Amman
Publisher : Unknown
Page : 8 pages
File Size : 48,7 Mb
Release : 1969
Category : Forests and forestry
ISBN : UIUC:30112104065344
Tree losses resulting from infestation by the mountain pine beetle (Dendroctonus ponderosae Hopkins) were measured in two stands of lodgepole pine (Pinus contorta Dougl.) where the beetle population had previously been epidemic. Measurement data showed that larger diameter trees were infested and killed first. Tree losses ranged from 1 percent of trees 4 inches (d.b.h.) to 87 percent of those 16 inches and greater d.b.h. Numbers of adult beetle emergence holes averaged 1.3 per square foot of bark area in trees 7 inches d.b.h. and 62 in trees 28 inches and greater d.b.h. The observations indicate that large infestations of mountain pine beetle depend on the presence of large diameter trees within a stand of lodgepole pine, thus implying that beetle population growth is food-limited.
Author : Valerie M. LeMay
Publisher : Unknown
Page : 64 pages
File Size : 52,8 Mb
Release : 2007
Category : Nature
ISBN : MINN:31951D02588513V
Under the federal Mountain Pine Beetle Program, research is being implemented to study the economic and ecological characteristics of mountain pine beetle-damaged stands in British Columbia and Alberta. Stand development projections following mountain pine beetle (Dendroctonus ponderosae) (MPB) attack will depend upon the ability to accurately project natural regeneration following attack. In this study, stand structure measured on affected stands shortly after attack was used to estimate the abundance and composition of natural regeneration a number of years following attack. Specific objectives were: to assess natural regeneration development in stands that have sustained mortality during current and/or previous MPB outbreaks; to develop a natural regeneration database for use in connection with the PrognosisBC growth and yield simulator; to use imputation techniques to extend the existing natural regeneration model to MPB-affected stands in the southern and central interior of the province; and to develop and enhance the software necessary to allow reasonable projections of MPB-affected stands.--Document.
Author : Ben Heemskerk,C. DeLong,Tanya Milner
Publisher : University of British Columbia Press
Page : 40 pages
File Size : 40,7 Mb
Release : 2008
Category : Nature
ISBN : MINN:31951D028270892
"This report outlines the objectives, study design, methods of data collection, and other details relevant to the establishment of Experimental Project (EP) 1369: A Framework for Documenting the Effects of the Mountain Pine Beetle in Sub-boreal Forests of Northern British Columbia. In 1995 through 1997, 48 plots were established in mature pine leading stands affected by mountain pine beetle (MPB) (38 plots) and MPB followed by wildfire (10 plots). All plots will remain unharvested, and are designed to examine ecological changes subsequent to these disturbances. The information from these plots will inform science on what ecological changes result from these disturbances in the sub-boreal forest landscape, and will provide critical information (such as growth rate of live understorey) to land managers."--Document.
Author : Pacific Forestry Centre,Mountain Pine Beetle Initiative (Canada)
Publisher : Unknown
Page : 308 pages
File Size : 42,8 Mb
Release : 2004
Category : Nature
ISBN : CORNELL:31924101517682
The S2Mountain Pine Beetle Symposium: Challenges and SolutionsS3 was held in Kelowna, British Columbia, Canada on October 30-31, 2003. This meeting was organized by Natural Resources Canada, Canadian Forest Service, Pacific Forestry Centre and funded through the Government of Canada Mountain Pine Beetle Initiative. Approximately 250 people representing the forest industry, consultants, universities, provincial and federal government agencies, First Nations, and the general public, from both Canada and the United States attended the meeting. Thirty presentations were given describing the current mountain pine beetle situation (in British Columbia, Alberta and the western United States) and its management and economic implications. Researchers presented the latest information on remote sensing, decision support systems, impacts on stand dynamics and wildlife, phytosanitary risks, climate change effects and preventive management as they relate to mountain pine beetle.
Author : René I. Alfaro
Publisher : Unknown
Page : 64 pages
File Size : 51,5 Mb
Release : 2010
Category : Conifers
ISBN : MINN:31951D03026090Y
This project used dendrochronology to reconstruct the history of mountain pine beetle (Dendroctonous ponderosae Hopkins) outbreaks over the last two centuries and to describe the relationship of outbreaks to varying climate conditions and fire history. The history of mountain pine beetle outbreaks was reconstructed from increment cores and basal disks collected from 85 stands across British Columbia and Alberta. Using aerial survey data, dendrochronological software was calibrated to detect growth releases that could be attributed to beetle outbreaks. Relationships between beetle outbreaks and climate variability were assessed using instrumental weather data, modelled climate data, and historical reconstructions of climate from tree-ring data. Relationships between the occurrence of beetle outbreaks and fire history were undertaken using several approaches in dendrochronology.--Document.
Author : Mary Lynn Reid
Publisher : Unknown
Page : 28 pages
File Size : 41,9 Mb
Release : 2008
Category : Nature
ISBN : UIUC:30112101885488
This report examines the distribution of mountain pine beetles with respect to stand composition at various scales in terms of both tree species and density. It further examines how the body condition of mountain pine beetles varies across the landscape, and suggests that these findings may explain some discrepancies in the evaluation of the success of management practices in Banff National Park.
Author : Walter E. Cole
Publisher : Unknown
Page : 24 pages
File Size : 42,8 Mb
Release : 1983
Category : Mountain pine beetle
ISBN : MINN:31951D02889265Y
Author : Fred L. Bunnell,L. L. Kremsater,Isabelle Houde
Publisher : Unknown
Page : 112 pages
File Size : 46,8 Mb
Release : 2011
Category : Forest management
ISBN : MINN:31951D03276084L
This document provides a synthesis of recently completed studies to assess the ecological consequences of forest management after attack by mountain pine beetle or other large-scale disturbances. Studies are assessed for their contributions to gaps in knowledge previously identified in the Mountain Pine Beetle Initiative Working Paper "Evaluating effects of large scale salvage logging for mountain pine beetle on terrestrial and aquatic vertebrates," which was published in 2004. This report focuses on studies developed through the federal Mountain Pine Beetle Initiative, the federal Mountain Pine Beetle Program, and the complementary BC Forest Science Program. Relevant information from other jurisdictions is sometimes included to augment those studies. Topics examined are: the impacts of beetle kill and salvage operations on habitat attributes; the impacts of beetle kill and salvage operations on attendant processes, such as snag fall rates, light interception, and snow accumulation; and the wildlife response to large-scale beetle outbreaks and management strategies. For each of these three topics, we provide a summary of: research to date; pertinent findings to date; and gaps in research.
Author : Walter E. Cole
Publisher : Unknown
Page : 52 pages
File Size : 41,7 Mb
Release : 1980
Category : Lodgepole pine
ISBN : IND:30000098225042
