Mountain Pine Beetle Attack In Ponderosa Pine Comparing Methods For Rating Susceptibility
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Mountain Pine Beetle Attack In Ponderosa Pine Comparing Methods For Rating Susceptibility
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Author : David C. Chojnacky
language : en
Publisher:
Release Date : 2000
Mountain Pine Beetle Attack In Ponderosa Pine Comparing Methods For Rating Susceptibility written by David C. Chojnacky and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with Mountain pine beetle categories.
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.
New Publications
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Author :
language : en
Publisher:
Release Date : 1997
New Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Forests and forestry categories.
Forest Health Monitoring National Status Trends And Analysis 2015
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Author :
language : en
Publisher: Government Printing Office
Release Date : 2016
Forest Health Monitoring National Status Trends And Analysis 2015 written by and has been published by Government Printing Office this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with Technology & Engineering categories.
The annual national report of the Forest Health Monitoring (FHM) Program of the Forest Service, U.S. Department of Agriculture, presents forest health status and trends from a national or multi-State regional perspective using a variety of sources, introduces new techniques for analyzing forest health data, and summarizes results of recently completed Evaluation Monitoring projects funded through the FHM national program.
Black Hills National Forest N F Slate Castle Project Area
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Author :
language : en
Publisher:
Release Date : 2009
Black Hills National Forest N F Slate Castle Project Area 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 categories.
Coconino National Forest N F Kachina Village Forest Health Project
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Author :
language : en
Publisher:
Release Date : 2003
Coconino National Forest N F Kachina Village Forest Health Project written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Growth Of Ponderosa Pine Stands In Relation To Mountain Pine Beetle Susceptibility
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Author :
language : en
Publisher:
Release Date : 1999
Growth Of Ponderosa Pine Stands In Relation To Mountain Pine Beetle Susceptibility written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Mountain pine beetle categories.
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.
Blue Mountains Forest Health Report
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Author :
language : en
Publisher:
Release Date : 1991
Blue Mountains Forest Health Report written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with Blue Mountains (Or. and Wash.) categories.
Evaluation Of Risk Assessment Of Mountain Pine Beetle Infestations
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Author : Caren C. Dymond
language : en
Publisher:
Release Date : 2007
Evaluation Of Risk Assessment Of Mountain Pine Beetle Infestations written by Caren C. Dymond 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.
This study is part of a series of research papers that explore the biological, social, and economic aspects of British Columbia's mountain pine beetle epidemic. In this paper, an established decision support system was evaluated for operational use. Digital forest inventory and beetle-impact survey data were integrated in standard GIS software for rating susceptibility and risk of mountain pine beetle infestation. The beetle-impact data, collected over a three-year period, provided an opportunity to generate risk on a given year and compare it to attacks in the subsequent year.--Includes text from Government of Canada publications site and from document.
Growth Of Lodgepole Pine Stands And Its Relation To Mountain Pine Beetle Susceptibility
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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
Growth Of Ponderosa Pine Stands In Relation To Mountain Pine Beetle Susceptibility
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Author : R. A. Obedzinski
language : en
Publisher:
Release Date : 1999
Growth Of Ponderosa Pine Stands In Relation To Mountain Pine Beetle Susceptibility written by R. A. Obedzinski and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Mountain pine beetle categories.