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Sunday, May 3, 2020 | History

2 edition of Western spruce budworm egg masses for predicting defoliation potential in the northern region found in the catalog.

Western spruce budworm egg masses for predicting defoliation potential in the northern region

Scott Tunnock

Western spruce budworm egg masses for predicting defoliation potential in the northern region

progress report

by Scott Tunnock

  • 143 Want to read
  • 7 Currently reading

Published by USDA Forest Service, Northern Region, State & Private Forestry in Missoula, Mont .
Written in English

    Subjects:
  • Defoliation -- Montana.,
  • Defoliation -- Idaho.,
  • Western spruce budworm -- Montana.,
  • Western spruce budworm -- Idaho.

  • Edition Notes

    Statementby Scott Tunnock.
    SeriesInsect disease report, Report -- 74-27., Report (United States. Forest Service. Northern Region) -- no. 74-27.
    ContributionsUnited States. Forest Service. Northern Region. State & Private Forestry.
    The Physical Object
    Pagination10 p. :
    Number of Pages10
    ID Numbers
    Open LibraryOL16139276M

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Western spruce budworm egg masses for predicting defoliation potential in the northern region by Scott Tunnock Download PDF EPUB FB2

Western spruce budworm egg masses for predicting defoliation potential in the northern region: progress report / by Scott Tunnock. Missoula, Mont.: USDA Forest Service, Northern Region, State & Private Forestry, [] SDM9 A3 no A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text.

Spatial prediction of the onset of spruce budworm defoliation. nents of the western spruce budworm modeling system. United has been regularly sampled for over thirty years by counts of egg. Following five years of injury, defoliation from the western spruce budworm, Choristoneura occidentalis Hübner (Lepidoptera: Tortricidae), on white spruce, Picea glauca (Moench) Voss, in northern British Columbia, Canada caused 39% tree mortality (Alfaro et al., ).Cited by: 7.

Sep 01,  · Three main hypotheses have been postulated over the past century to explain the outbreaking population dynamics of eastern spruce budworm, Choristoneura fumiferana (Clemens).

The Silviculture Hypothesis first arose in the s, with the idea that outbreaks were driven by forestry practices favoring susceptible softwood chickashacf.com by: Aerial surveys for swiss needle cast in western Oregon / (Portland, OR: Pacific Northwest Research Station, USDA Forest Service, Forestry Sciences Laboratory, []), by Alan Kanaskie, National Association of State Foresters, and Or.) Pacific Northwest Research Station (Portland (page images at.

Full text of "Forest insect and disease conditions in the United States, " See other formats. LANDSCAPE-SCALE POPULATION DYNAMICS OF GYPSY MOTH AND ITS USE TO DEVELOP MANAGEMENT DECISIONS. Predation of gypsy moth egg masses was studied in Slovakia from /02 to 09/30/03 Outputs Statistical analyses of time-space correlation were conducted on historical outbreak maps of the spruce budworm, western spruce budworm, forest.

This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Western Forest Insect Work Conference Portland, Oregon FebruaryCompiled by: Western Spruce Budworm, Northern Spotted Owl, and the Mardon Skipper on the Gifford or egg-masses in the general area (1 or more miles periphery around the trapping location).

This system enables land managers and pest management specialists to focus. Outbreaks of Lambdina fiscellaria lugubrosa in British Columbia have always been preceded by a rapid population growth. Sampling methods and population prediction models are needed to provide forest managers with the capability of monitoring and predicting populations of the insect.

I sampled eggs, larvae, pupae and adults of Lambdina fiscellaria lugubrosa at various locations in the province. Blais, J. (): Effects of spring and summer temperatures on spruce budworm populations (Choristoneura fumiferana Clem.) in the Gaspé Peninsula.

- Canadian Entomologist 90 (6), pp. [] Blais, J. (): Spruce budworm parasite investigations in the lower St. Lawrence and Gaspé Regions in Quebec. Our main study area includes population sample points (megagrid) spread across an area of km 2 in the Cooking Lake and Ministik Hills area of Alberta, Canada (° 00′ W, 53° 22′ N, Fig.

2).This area is at the southern edge of boreal forest and is dominated by trembling aspen (Populus tremuloides), the preferred host plant of forest tent caterpillar. Book Author(s): A. Isaev. Search for more papers by this author. Soukhovolsky. Search for more papers by this author. Tarasova.

Search for more papers by this author. Palnikova. Search for more papers by this author. Kovalev. Search for more papers by this author. Kittel TGF, Rosenbloom NA, Painter, TH, Schimel DS, Fisher HH, Grimsdell A, VEMAP (Vegetation/Ecosystem Modeling and Analysis Project) Participants () The VEMAP Phase I Database: An Integrated Input Dataset for Ecosystem and Vegetation Modeling for the Conterminous United chickashacf.com by: Engelmann and blue spruce: Engelmann spruce is the preferred host for spruce beetle; although during outbreaks of this insect blue spruce will also be attacked and killed.

Spruce beetle prefers larger-diameter trees (>16 inch­es) but will kill trees as small as 5 inches in di­ameter during an outbreak. Foliage protection is usually measured by optical examination of volume of feeding on buds/tree, recorded as percent defoliation to nearest 10% (USDAUSDA ).

References Carolin, V. and W. Coulter. Sampling populations of western spruce budworm and predicting defoliation on Douglas-fir in eastern Oregon. Pac. UMaine Today Fall/Winter E. DUCATION MAJORS at the University of Maine have the opportunity. to teach in front of a virtual classroom of avatars in preparation for student teaching in area.

Jun 22,  · Liebhold, A.M. Warder Allee’s escape from obscurity (book review). Trends in Ecology and Evolution PDF. Liebhold, A.M., Naoto Kamata, Marek Turcáni.

Inference of Adult Female Dispersal from the Distribution of Gypsy Moth Egg Masses in a Japanese City. Agricultural and Forest Entomology 69–73 PDF. Note: An older edition of this document was published in Index to USDA Technical Bulletins, Numbers The current edition is an Internet-based document, and includes links to full-text USDA Technical Bulletins on the Internet.

Fire in Eastern Oak Forests: Delivering Science to Land Managers. Proceedings of a Conference GTR-NRS-P-1 CONTeNTS HISTORICAL PeRSPeCTIveS ON eASTeRN OAk FOReSTS The Paleoecology of Fire and Oaks in eastern Forests William A. Patterson IIICited by: Feb 13,  · Order Lepidoptera, family Torticidae.

Primary hosts are balsam fir, white spruce, and red spruce. A forestry defoliator. Native to North America. There is loss of foliage in the upper crown.

Larvae mine previous year's needles, unopened buds, male flowers, and new shoots. Mined old needles appear yellow, with silk at entrance holes.merous species were Northern Shoveler, Ruddy Duck, gulls (mainly California Gull), peeps (mainly Least Sandpiper and Western Sandpiper), and Black-necked Stilt, all exceeding 1, individuals on counts in Notably absent from recent counts are Eared Grebes, which had been estimated using the sea by the hundreds of thousands in recent decades.