Stand Dynamics Documents

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Spruce Budworm: Dealing with the New Outbreak (2014)

Problem Addressed: Current SBW situation, forest planning, intervention, mitigation/salvaging activities, and perspectives.
Goal(s)/Objective(s): Promote spruce budworm discussions among the Quebec research community, industry and government.
Views: 1974
Downloads: 4
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Growth Impact of the North Kaibab Pandora Moth Outbreak (1987)

Problem Addressed: Tree mortality and growth due to pandora moth outbreaks
Goal(s)/Objective(s): Examine tree mortality and growth in defoliated, insecticide treated, and undefoliated stands in the pandora moth outbreak area on the Kaibab National Forest
Key Findings: Tree mortality was less than 1%, defoliation loss was estimated at least 11 f.b.m. per acre per year.
Views: 1220
Downloads: 2
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Control of a Spruce Budworm Outbreak in Quebec through Aerial Spraying Operations

Problem Addressed: Spruce budworm in Quebec
Goal(s)/Objective(s): Suppress an incipient spruce budworm outbreak in the Lower St. Lawrence region of Quebec though the aerial application of DDT
Key Findings: Although the distribution of eggs could serve as a guide to determine the areas requiring treatment the following year, the exact delimitation of the spray area should be based on a survey carried out just before application of the insecticide.
Views: 1211
Downloads: 1
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Budworm-Caused Mortality and 20-Year Recovery in Immature Balsam Fir Stands (1979)

Problem Addressed: Spruce budworm
Goal(s)/Objective(s): Provide some details of the variation in mortality among plots, as well as describing recovery.
Key Findings: It appears that while these immature stands have recovered remarkably from the effects of intense uncontrolled defoliation, they will yield only slightly more than one-half of the projected volume at maturity.
Views: 1074
Downloads: 2
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Assessment of the 1971 Spruce Budworm Aerial Spraying Program in New Brunswick and Forecast for 1972.

Problem Addressed: Spruce budworm
Goal(s)/Objective(s): Discuss and review the 1971 Spruce Budworm aerial spraying program and suggest proposals for 1972.
Key Findings: The trends suggest that the biocontrol complex operating against the budworm has been weakened, and that spraying may lead to higher general equilibrium levels of budworm, so that resurgence becomes more probable; so far, no minor pest is opportunistically approaching epidemic status. However, spray-induced interference with biocontrol forces leaves this possibility open.
Views: 1026
Downloads: 1
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Patterns of Tree Mortality During an Uncontrolled Spruce Budworm Outbreak in Baxter State Park, 1983

Problem Addressed: Uncontrolled spruce budworm outbreak
Goal(s)/Objective(s): Study the patterns of mortality in balsam fir and in the red-black spruce complex during an uncontrolled spruce budworm outbreak
Key Findings: The hypotheses on the mechanisms producing the tree mortality patterns during a budworm outbreak were summarized and the observed tree mortality patterns were then interpreted according to those hypotheses.
Views: 1046
Downloads: 0
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Spruce Mortality in Nova Scotia Caused by the Spruce Beetle, Dendroctonus Rufipennis Kpy., 1981

Problem Addressed: Spruce forestry mortality due to spruce beetle infestations in Nova Scotia
Key Findings: The distribution of the beetle in the spruce forests of Nova Scotia and an estimate of the merchantable volume affected by the beetle are discussed, along with notes on the behavior of the insect in infested white spruce stands.
Views: 1080
Downloads: 2
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Pulping of Budworm-Killed Balsam Fir (1982)

Problem Addressed: Spruce budworm-killed balsam fir
Goal(s)/Objective(s): Compare properties of the dead balsam fir to those of live, healthy fir.
Key Findings: Spruce budworm-killed trees had significantly decreased moisture contents; lower specific gravity and bark content, and smaller sized chips as a function of time-since-death.
Views: 999
Downloads: 0
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