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Refining volume estimates of down woody debris

Problem Addressed: Determine which formulae are most appropriate for use in field protocols
Goal(s)/Objective(s): Evaluate the bias, precision, and accuracy of six commonly used formulae for DWD volume estimation and to demonstrate the degree to which collapse could influence volume estimates of well-decayed DWD.
Key Findings: The conic–paraboloid formula had the lowest bias, highest precision, and greatest accuracy.
Views: 1279
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Dendrochronological reconstruction of spruce budworm outbreaks in northern Maine, USA

Problem Addressed: Detection of major spruce budworm outbreaks in Maine
Goal(s)/Objective(s): Reconstruct the history of major spruce budworm outbreaks in northern interior Maine using host–nonhost dendrochronological analyses, contrast the outbreaks detected in this region to those of eastern Canada; and evaluate the efficacy of using radial growth patterns of small spruce trees for the purpose of detecting outbreaks.
Key Findings: Small-diameter, slow-growing red spruces clearly express the typical budworm signal once ring-width data have been properly standardized.
Views: 1239
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Effects of thinning on drought vulnerability and climate response in north temperate forest ecosystems

Problem Addressed: Do density reductions confer greater resistance and/or resilience to droughts?
Goal(s)/Objective(s): To assess how long-term forest density management reduced drought vulnerability.
Key Findings: Thinning generally enhanced drought resistance and resilience; however, this relationship showed a pronounced reversal over time in stands maintained at lower tree densities
Recommendation: Results confirm the potential of density management to moderate drought impacts on growth
Views: 1017
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Effects of Photoperiod and Size on Flight Activity and oviposition in the eastern spruce budworm (Lepidoptera: Torticidae)

Problem Addressed: Dispersal of adult females of eastern spruce budworm (Choristoneura fumiferana (Clem.))
Goal(s)/Objective(s): Determine effects of photoperiod on spruce budworm
Key Findings: The role of female activity as related to size and flight capability is therefore of potentially great significance in spruce budworm population dynamics and deserves further detailed investigation.
Views: 895
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Distribution and presistence of fenitrothion residues in foliage, soil and water in larose forest.

Problem Addressed: Insecticide residues in Larose forest.
Goal(s)/Objective(s): Summarize an operational experiment carried out in Larose Forest to study the persistence of aerially applied fenitrothion and its metabolites (the oxon analgue and 4-nitro-cresol) in white spruce foliage, soil and water samples collected from sprayed areas.
Key Findings: Degradation and persistence of fenitrothion findings are in reasonable agreement with those for the same chemical used in N.B. forests.
Views: 981
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A Review of Important Forest Insect and Disease Problems in the Terrace Bay District of Ontario 1950-1980

Problem Addressed: Terrace Bay District loss due to insects and diseases.
Goal(s)/Objective(s): Review signficant forest insects and diseases that have occurred in the Terrace Bay District between 1950 and 1980.
Key Findings: Information on insects and diseases that are capable of causing, or have caused, tree mortality or a reduction in growth.
Views: 972
Downloads: 1
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A Biologically Active Analogue of the Primary Sex Pheromone Components of Spruce Budworm

Problem Addressed: Spruce Budworm
Goal(s)/Objective(s): Disruption of mating and of trap capture of spruce budworm
Key Findings: The 1, 12-pentadecadiene is an olefinic pheromone analogue for the spruce budworm that can duplicate to some extent the functioning of the primary sex-pheromone components.
Views: 938
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LiDAR and Forestry: Opportunities, Challenges, and Future

Problem Addressed: LiDAR and structure for motion provide invaluable data on forests
Goal(s)/Objective(s): Describe potential uses and challenges of these 3D technologies
Key Findings: 3D will change how we inventory and make forest management decisions
Recommendation: Continued research and evaluation of 3D products is needed for full utilization
Views: 1223
Downloads: 1
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