2 edition of Western spruce budworm defoliation trend relative to weather in the Northern Region, 1969-1979 found in the catalog.
Western spruce budworm defoliation trend relative to weather in the Northern Region, 1969-1979
John S. Hard
1980 by USDA Forest Service, Northern Region, State & Private Forestry in Missoula, Mont .
Written in English
Western spruce budworm defoliated area in the Northern Region has differed significantly across three discrete geographic zones during the past decade. Aerially visible defoliation in northern Idaho increased from 1.7 million acres in 1969 to a high of 2.2 million acres in 1974, and declined to none in 1979. Defoliated area in western Montana increased from 1.8 million acres in 1969 to a high of 2.8 million acres in 1972 and declined to 0.6 million acres in 1979. Conversely, defoliated area in eastern Montana fluctuated at low levels between 0.1 and 0.7 million acres between 1969 and 1974, and then rose to a high of 1.6 million acres in 1979. Analysis of defoliation trend, the ratio of acres defoliated in the current year by acres defoliated the prior year, and weather during budworm larval and pupal periods during the past decade revealed the following relationships: Defoliation trend in all three geographic areas varied (a) directly with mean maximum temperature during May, June, and July of the year before, and (b) inversely with frequency of measurable precipitation during May, June, and July of the year before. Based on warm, dry conditions throughout the Region in 1979, we predict a general increase in budworm populations in the Northern Region in 1980.
|Statement||by John Hard and Scott Tunnock and Robert Eder.|
|Series||Forest insect & disease management, Report -- 80-4., Report (United States. Forest Service. Northern Region) -- no. 80-4.|
|Contributions||Tunnock, Scott., Eder, Robert G., United States. Forest Service. Northern Region. State & Private Forestry.|
|The Physical Object|
|Pagination||10,  p. :|
|Number of Pages||15|
Zeiraphera canadensis Mutuura & Freeman Lepidoptera: Tortricidae. Turgeon, J.J.; Regniere, J. Development of sampling techniques for the spruce budmoth, Zeiraphera canadensis Mutuura and Freeman (Lepidoptera: Tortricidae).The Canadian Entomologist - . A literature review of the spruce, western, and 2-year-cycle budworms: Choristoneura fumiferana, C. occidentalis, and C. biennis (Lepidoptera: Tortricidae) by McKnight, Melvin E; Rocky Mountain Forest and Range Experiment Station (Fort Collins, Colo.)Pages: Intermountain Research Station (Ogden, Utah): Influence of overstory removal and western spruce budworm defoliation on growth of advance conifer regeneration in Montana / ([Ogden, Utah]: U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, ), also by Clinton E. Carlson and Wyman C. Schmidt (page. Western Spruce Budworm Aerial Treatment Project • Status and Implementation • May 31st, tussock moth and western spruce budworm occurred south of Cheyenne Mtn. and spilled into North • Repetitive and complete defoliation can lead to opportunistic bark beetles.
The budworm was first reported in the United States in in Oregon; how- ever, it was not recognized as a serious threat to western coniferous. F Figure Geographic distribution of the west- ern spruce budworm in Western United States and Canada. of forests.
Committee of Inquiry on the Rehabilitation of Disabled Persons
I remember when--
Mind of winter
TAIYO YUDEN CO., LTD.
A brief history of the great war
Tintins Moon Adventure Containing Destination Moon and Explorers on the Moon (A Magnet Book)
Ethical health care reform
Realidades Level 2 Computer Test Bank Texas Edition 2005
Anne of the barricades.
Meaning and symbol in three modern artists
The peoples companion to the Bible
The At-Risk Student
Diaspora in the countryside
Western spruce budworm defoliated area in the Northern Region has differed significantly across three discrete geographic zones during the past decade.
Aerially visible defoliation in northern Idaho increased from million acres in to a high of million acres inand declined to none in Cited by: 9. WESTERN SPRUCE BUDWORM DEFOLIATION TREND RELATIVE TO WEATHER IN THE NORTHERN REGION By John Hard and Scott Tunnock, Entomologists and Robert Eder, Statistical Assistant ABSTRACT 0 Western spruce budworm defoliated area in the Northern Region has dif-fered significantly across three discrete geographic zones during the.
Western spruce budworm defoliation trend relative to weather in the northern region, pest arthropods, pest insects, United States of America, western spruce budworm Geographical Location(s): Idaho idaho Subject Category: Geographic Entities see more Cited by: 9.
Western spruce budworm defoliated area in the Northern Region has differed\ud significantly across three discrete geographic zones during the past decade.
Aerially visible defoliation in northern Idaho increased from million acres in to a high of million acres in\ud and declined to none in The relationship of western spruce budworm outbreaks and population collapse to weather parameters was examined using long term weather records from two stations in the budworm outbreak area of British Columbia and outbreak patterns obtained from Forest Insect and Disease Survey records and from tree stem analyses.
Hard J, Tunnock S, Eder R. Western spruce budworm defoliation trend relative to weather in the Northern Region, – US Department of Agriculture, Forest Services, Northern Region, State and Private Forestry Report, by: Keywords: Dendroentomology; Western spruce budworm (Choristoneura occidentalis); Outbreak; Douglas-ﬁr (Pseudotsuga Eder R.
Western spruce budworm defoliation trend relative to weather in the Northern Region,–USDepartmentofAgriculture,Forest Services, Northern Region, State and Private Forestry Report,pp. Synchronous western spruce budworm outbreaks can occur over much of a host species’ range, causing widespread limb and tree mortality, regeneration delays, and reduction in tree growth rates.
Observational outbreak records in northern Washington State extend back only to the midth century, limiting our understanding of this species’ long-term population Cited by: 3.
Western spruce budworm defoliation area growth rate R versus standardized anomalies of May climatic water deficit (Northwest (NW): p = ; Southwest (SW): p = ). Solid squares indicate data from years and regions in the Southwest, and hollow circles indicate data from years and regions in the : Bingbing Xu, Jeffrey A.
Hicke, John T. Abatzoglou. Stands in the IDF are by far the most susceptible to western spruce budworm defoliation.
Over 30% of the total defoliation recorded over the Kamloops Forest Region land base since has occurred in the IDF.
Approximately 45% of the IDF ( ha) (Fig. 3) has sustained defoliation at some by: No typical pattern or trend in western spruce budworm epidemics has been ap-parent; most of the early epidemics lasted for a few years and then subsided naturally; others persisted longer, at times without spreading over large areas.
An epidemic in the northern Rocky Moun-tains, which began inhas now per-sisted for more than 30 years, in spite ofFile Size: KB.
Outbreaks of western spruce budworm are influenced primarily by climate and weather and, therefore, fluctuate in an irregular and unpredictable manner. In stands which are chronically affected by budworm, outbreaks may be sustained for 25 years or longer.
Inoverha were under attack by the budworm, mostly in the southern interior of the province. Budworm outbreaks may be sustained for 25 years or more. Host trees: Primarily Douglas-fir, with other tree species such as the true firs, larch and to a lesser degree, spruce, also impacted by the western spruce budworm.
Disturbance-climate relationships between wildfire and western spruce budworm in interior British Columbia Article (PDF Available) in Ecosphere 9(3).
Forest insect outbreaks are influenced by ecological processes operating at multiple spatial scales, including host-insect interactions within stands and across landscapes that are modified by regional-scale variations in climate. These drivers of outbreak dynamics are not well understood for the western spruce budworm, a defoliator that is native to forests of western Cited by: Inwestern spruce budworm activity was highly apparent in Douglas-fir and grand fir forests of the eastern slope of the Cascade Mountains north of I and across parts of northeastern Washington.
Many people noticed defoliated branch tips and tree tops for the first time as an ongoing outbreak spread to include their land or. An outbreak of the western spruce budworm temporarily modifies cellular wood anatomy of stem wood in natural and mature Douglas-fir stands impacting wood quality properties.
Western spruce budworm (Choristoneura occidentalis Freeman) is a widespread and destructive defoliator of commercially important coniferous forests in western North Cited by: Synchronous western spruce budworm outbreaks can occur over much of a host species’ range, causing widespread limb and tree mortality, regeneration delays, and.
Hummel, USDA Forest Service, Pacific Northwest Research Station, P.O. BoxPortland, Oregon and J. Agee, Division of Ecosystem Sciences, College of Forest Resources, University of Washington, Seattle, Washingt on Western Spruce Budworm Defoliation Effects on Forest Structure and Potential Fire Behavior Abstract Forest.
Defoliation and Potential Fire Behavior S. Hummel,1 USDA Forest Service, Paciﬁc Northwest Research Station, P.O. BoxPortland, Oregon and J. Agee, Division of Ecosystem Sciences, College of Forest Resources, University of Washington, Seattle, Washington Western Spruce Budworm Defoliation Effects on Forest Structure andFile Size: KB.
A literature review of the spruce, western, and 2-year-cycle budworms: Choristoneura fumiferana, C. occidentalis, and C.
biennis (Lepidoptera: Tortricidae) / Related Titles. Series: USDA Forest Service Research paper RM ; 44 By. Balsam fir and white spruce are the preferred host species of the spruce budworm.
Red, black and Colorado spruce are also suitable host trees. On occasion, tamarack, pine, and hemlock may be fed upon. In Saskatchewan, spruce budworm feeds on white spruce, balsam fir and to a lesser extent black spruce, as well as the introduced Colorado Size: KB.
southern interior at the beginning of a severe western spruce budworm outbreak in the s. Two of the sites were sampled in to determine whether modiﬁcations had occurred in the anatomical characteristics of stem wood formed during outbreak years. We determined that rings formed during the western spruce budwormCited by: Identifying Western Spruce Budworm Defoliation Events in the IDF Zone using Dendroentomology By James FegyvernekiThe University of British Columbia, A GRADUATING ESSAY SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF BACHELOR OF SCIENCE IN FORESTRY IN THE FACULTY OF.
Mechanisms of Douglas-fir resistance to western spruce budworm defoliation: bud burst phenology, photosynthetic compensation and growth rate. Chen Z(1), Kolb TE, Clancy KM. Author information: (1)School of Forestry, Northern Arizona University, Flagstaff, AZby: Balsam fir is the most susceptible host to outbreaks of the spruce budworm.
Annual defoliation of current-year growth for 5 to 8 years will kill the host tree. Defoliation by the spruce budworm is most clearly reflected in the fir's radial growth. The population of mature balsam fir in a forest is greatly reduced by a combination of factors: its shorter lifespan and a great vulnerability to Family: Tortricidae.
The western spruce budworm model: structure and content. Gen. Tech. Rep. PNW-GTR Portland, OR: U.S. Department of Agriculture, Forest Serv-ice, Pacific Northwest Research Station.
70 p. The Budworm Model predicts the amounts of foliage destroyed annually by the west-ern spruce budworm, Choristoneura occidentalis Freeman, in a forest stand. The. outbreak of spruce budworm were obtained by subjecting a national forest inventory to the spatially defined represent-ative patterns of defoliation.
The use of these estimates in determining the status of Canada’s forests as a carbon source or sink is discussed. Key words:spruce budworm, defoliation, growth loss and mortality, carbon source. Using an extensive database on historical lightning‐caused fire ignitions and spruce budworm defoliation between andwe assess the relative importance of cumulative defoliation and fire weather on the probability of ignition in Ontario, by: Western Spruce Budworm.
Asked JAM EDT. What measures can I take against an infestation of the Western Spruce Budworm moth. My two acre property and surrounding properties are infested here in Indian Mountain and Stagestop. They are even attacking my bristlecones.
This is the first year I have noticed them in the four years I. The Spruce Budworm Model One of the models discussed in this paper is of interest to us because it involves an insect pest found in northern Minnesota pineries, the spruce budworm (Choristoneura fumiferana).
The model was developed in Canada to describe infestations observed there, but is certainly relevant to northern Minnesota. Page 4 Back to menu Western Spruce Budworm Habitat Types Western spruce budworm defoliation occurs in 46 habitat types described for Montana (Fellin et al.
); across much of Montana and part of Idaho. They fall in these habitat type series— x Douglas-fir x spruce x grand fir x western red cedar x western hemlock x lower elevations of. The spruce budworm (Choristoneura fumiferana) is one of the most destructive native insects in the northern spruce and fir forests of the Eastern United States and of the time, the number of budworms remains at a low level.
However, every forty years or so, the population of budworms explodes to huge numbers, devastating the forest and destroying many trees. Hummel and Agee "Western spruce budworm defoliation effects on forest structure and potential fire behavior." Northwest Science. ; 77(2): Cited by: Sample sizes required to estimate defoliation of spruce and balsam fir caused by spruce budworm population accurately.
Northern Journal of Applied Forestry - New Window; Montgomery, B. A.; Simmons, G. A.; Witter, J. A.; Flexner, J. The spruce budworm handbook: a management guide for spruce-fir stands in the Lake States. for the western spruce budworm on Douglas-fir is based upon the data from Johnson, P.
8c R. Denton. Outbreaks of the western spruce budworm in the American northern Rocky Mountain area from through U.S.
For. Serv. Gen. Tech. Rep. INT p. Ecology of the western budworm Choristoneura occidentalis Freeman File Size: 1MB. Western spruce budworm, a native western North America insect, is defoliating Douglas-fir, true firs, spruce, and other conifer species in many.
Effects of Ortet Genotype and Western Spruce Budworm Defoliation on Foliar Nutrients in Douglas-fir Clones Karen M. CLANCY USDA Forest Service Research and Development, Rocky Mountain Research Station, Flagstaff, ArizonaUSA Zhong CHEN, Thomas E.
KOLB School of Forestry, Northern Arizona University, Flagstaff, ArizonaUSA. Abstract. Changes in geographical ranges and spatial extent of outbreaks of pest species are likely consequences of climatic change. We investigated potential changes in spatial distribution of outbreaks of western spruce budworm, Choristoneura occidentalis Freeman, and gypsy moth, Lymantria dispar (L.), in Oregon and Pennsylvania, respectively using maps of historial defoliation.
ss Outbreak At its peak, the last SBW outbreak, which lasted from tocovered about million acres across eastern Canada and Maine. The outbreak was severe and produced dead and dying stands of trees that could be seen to the horizons in some areas.
Research Maps. Budworm Populations Maps; L2 Survey Maps Media; Resources. Maine Spruce Budworm Task Force Report; ForEST: Maine Forest Ecosystem Status and Trends App; L2 Sample Collection Efforts; Budworm Tracker Program; Presentation Request; Photo & Video Gallery; Helpful Sites; Contact; Search this website.
Spruce Budworm. Maine SBW. Contact Michigan DNR: Bob Heyd,ext. or John Pepin, Over the past few years, white spruce and balsam fir have been defoliated by the spruce budworm, one of the most destructive native insects in the northern spruce and fir forests of the eastern United States and Canada.Foliage Dynamics and Tree Damage Components of the Western Spruce Budworm Modeling System,General Technical Report, INT 40 pages with illustrations.
[Crookston, N. L.] on *FREE* shipping on qualifying offers. Foliage Dynamics and Tree Damage Components of the Western Spruce Budworm Modeling System,General Technical Author: N. L. Crookston.