Temporal Composition And Structure Of Post Beetle Lodgepole Pine Stands
DOWNLOAD
FREE 30 Days
Download Temporal Composition And Structure Of Post Beetle Lodgepole Pine Stands PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Temporal Composition And Structure Of Post Beetle Lodgepole Pine Stands book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Temporal Composition And Structure Of Post Beetle Lodgepole Pine Stands
DOWNLOAD
FREE 30 Days
Author : K. Runzer
language : en
Publisher:
Release Date : 2008
Temporal Composition And Structure Of Post Beetle Lodgepole Pine Stands written by K. Runzer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Nature categories.
"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.
Mountain Pine Beetle
DOWNLOAD
FREE 30 Days
Author : Fred L. Bunnell
language : en
Publisher:
Release Date : 2011
Mountain Pine Beetle written by Fred L. Bunnell and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Forest management categories.
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.
Information Forestry
DOWNLOAD
FREE 30 Days
Author :
language : en
Publisher:
Release Date : 2009-04
Information Forestry written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-04 with Forests and forestry categories.
A Silvicultural Assessment Of 10 Lodgepole Pine Stands After Partial Cutting To Reduce Susceptibility To Mountain Pine Beetle
DOWNLOAD
FREE 30 Days
Author : Roger J. Whitehead
language : en
Publisher:
Release Date : 2007
A Silvicultural Assessment Of 10 Lodgepole Pine Stands After Partial Cutting To Reduce Susceptibility To Mountain Pine Beetle written by Roger J. Whitehead and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007 with Nature categories.
Over the past 15 years, selective cutting prescriptions have been applied by forest operations in southeastern British Columbia as part of a strategy to reduce landscape-level susceptibility to damage from mountain pine beetle outbreaks. The prescriptions have been applied in stands where maintenance of some mature forest cover is needed to meet management objectives for viewscapes, recreation and habitat or to hold some pine volume during periods of rising beetle activity until it is required or available for harvest. In this study, we examined 10 of these sites 5 to 14 years after harvest, and determined current stand composition and structure from direct sampling and pre- and post-treatment stand characteristics from stand reconstruction. We then related these characteristics to original treatment specifications; the volume removed during harvest and remaining on site after treatment; subsequent losses to wind, snow or bark beetle damage; current stocking status; radial growth rates of residual overstorey trees; and the nature of fuel complexes created and effects of treatment on potential fire behaviour.
Abundance Of Secondary Structure In Lodgepole Pine Stands Affected By The Mountain Pine Beetle In The Cariboo Chilcotin
DOWNLOAD
FREE 30 Days
Author :
language : en
Publisher:
Release Date : 2009
Abundance Of Secondary Structure In Lodgepole Pine Stands Affected By The Mountain Pine Beetle In The Cariboo Chilcotin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Conifers categories.
The term secondary structure was coined as a way to describe the abundance, composition and distribution of trees that will remain alive in stands impacted by the mountain pine beetle (MPB, Dendroctonus ponderosae Hopkins) epidemic. The epidemic has been killing extensive swaths of lodgepole pine in the interior forests of British Columbia since the late 1990s. Secondary structure can be broken into two main components: understorey and overstorey trees. Understorey trees include seedlings and saplings and can include smaller lodgepole pine trees that survive the epidemic. Overstorey trees that survive the beetle epidemic are typically of non-host species (e.g., interior spruce, subalpine fir, Douglas-fir, or broadleaf species). This document reports on a study of the extent and abundance of secondary structure in the Cariboo-Chilcotin region of the central interior of British Columbia.--Document and publisher's website.
Growth Of Lodgepole Pine Stands And Its Relation To Mountain Pine Beetle Susceptibility
DOWNLOAD
FREE 30 Days
Author : S. A. Mata
language : en
Publisher:
Release Date : 2003
Growth Of Lodgepole Pine Stands And Its Relation To Mountain Pine Beetle Susceptibility written by S. A. Mata and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Forests and forestry categories.
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
Localized Spatial And Temporal Attack Dynamics Of The Mountain Pine Beetle In Lodgepole Pine
DOWNLOAD
FREE 30 Days
Author : Barbara J. Bentz
language : en
Publisher:
Release Date : 1996
Localized Spatial And Temporal Attack Dynamics Of The Mountain Pine Beetle In Lodgepole Pine written by Barbara J. Bentz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Bark beetles categories.
Historic Influence Of The Mountain Pine Beetle On Stand Dynamics In Canada S Rocky Mountain Parks
DOWNLOAD
FREE 30 Days
Author : Pamela Dykstra
language : en
Publisher:
Release Date : 2006
Historic Influence Of The Mountain Pine Beetle On Stand Dynamics In Canada S Rocky Mountain Parks written by Pamela Dykstra and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Ecological disturbances categories.
The Canadian government announced the Mountain Pine Beetle Initiative (MPBI) in 2002 to address the socio-economic and ecological consequences of an epidemic of mountain pine beetle (Dendroctonus ponderosae Hopkins). The objective of this study was to establish baseline information on the ecological characteristics that occur at different stages of succession, resulting from mountain pine beetle disturbance at different time intervals. Key issues addressed by this study were: the post-beetle ecological character of stands; the ecological legacies that should be sought post-beetle; maintenance of ecological integrity in beetle-damaged landscapes; and the impacts of beetles on regeneration. This paper presents a study of stand conditions following two historic mountain pine beetle outbreaks events in the 1940s and 1980s. The study quantified structural and species composition of stands at different stages of succession (25 years and 65 years), and quantified the differences that occur in forest development between stands with and without disturbance by the beetle. It concludes with several recommendations for management of post-disturbance landscapes.
Localized Spatial And Temporal Attack Dynamics Of The Mountain Pine Beetle In Lodgepole Pine
DOWNLOAD
FREE 30 Days
Author : Barbara J. Bentz
language : en
Publisher:
Release Date : 1996
Localized Spatial And Temporal Attack Dynamics Of The Mountain Pine Beetle In Lodgepole Pine written by Barbara J. Bentz and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Bark beetles categories.
Assessment Of Post Beetle Impacts On Natural Regeneration Of Lodgepole Pine
DOWNLOAD
FREE 30 Days
Author : Keith Norman Egger
language : en
Publisher:
Release Date : 2009
Assessment Of Post Beetle Impacts On Natural Regeneration Of Lodgepole Pine written by Keith Norman Egger and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Lodgepole pine categories.
In this paper the authors characterize lodgepole pine regeneration and the related micro-site conditions across a range of disturbance scenarios associated with mountain pine beetle (MPB) infestation and wildfire; indentify limitations for the germination, servival, recruitment and growth of natural and artificial regeneration in relation to the effects of site moisture, fire severity, and competition by vegetation; and provide guidance on how to manage beetle-infested lodgepole pine stands subsequently burned by wildfires. The work includes information on materials and methods, results and discussion, the authors' conclusions, as well as recommendations.--Includes text from document.