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A Demonstration of Bacillus Thuringiensis, Plus the Enzyme Chitinase, Against the Spruce Budworm in Maine. Part I. Efficacy

Problem Addressed: Spruce Budworm in northern Maine

Goal(s)/Objective(s): Evaluate Bacillus thuringiensis and B.t. plus chitinase on controlling damage of the spruce budworm in northern Maine.

Key Findings: The B.t. alone treatments showed levels of crown damage that were indistinguishable from that of control plots.

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Dynamics of Coarse Woody Debris Following Gap Harvesting in the Acadian Forest of Central Maine, U.S.A.

Problem Addressed: Dynamics of coarse woody debris (CWD) under an expanding-gap harvesting system in the Acadian forest of Maine

Goal(s)/Objective(s): Comparing volume, biomass, diameter-class, and decay-class distributions of CWD in permanent plots before and 3 years after harvest

Key Findings: The trend is likely more complex than what was determined due to the superimposition of small-scale natural disturbances and repeated silvicultural entries.

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Disturbance Dynamics of Old-Growth Picea rubens Forests of Northern Maine

Problem Addressed: How spatial and temporal aspects of past disturbances shaped the current structure and composition of old-growth Picea rubens forests

Goal(s)/Objective(s): Linking spatial data and temporal data to reconstruct the location and size of former canopy gaps back to 1920, and determine a more general disturbance as far back as 1740.

Key Findings: Persistence of Picea rubens is attributed to the abundance of advance regeneration, the ability to endure suppression and respond favorably to release, and longevity relative to ecologically similar species.

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The Efficacy of Salvage Logging in Reducing Subsequent Fire Severity in Conifer-Dominated Forests of Minnesota, USA

Problem Addressed: Secondary uses for salvage logging.

Goal(s)/Objective(s): Assess the impacts of blowdown and salvage logging on wildfire severity

Key Findings: Salvage logging reduced the intensity (heat released) of the subsequent fire, but the effect on severity (impact to the system) differed between the tree crowns and forest floor.

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Stand and Cohort Structures of Old-Growth Pinus Resinosa-dominated Forests of Northern Minnesota, USA

Problem Addressed: Range of variability in stand and age structure of old-growth Pinus resinosa

Goal(s)/Objective(s): Use dendrochronological data to map stem locations and reconstruct stand and age structures prior to European settlement of the region.

Key Findings: Pre-settlement forests more complex than those of the single-cohort, post-stand-replacing-fire model that has guided regional forest management.

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Residence Times and Decay Rates of Downed Woody Debris Biomass/Carbon in Eastern US Forests

Problem Addressed: Describing forest carbon dynamics and downed woody debris

Goal(s)/Objective(s): Develop models to estimate duration in various stages of decay, half-life, residence time, and decay rate for 36 tree species

Key Findings: Species that exhibited shorter half lives tended to display a shorter residence time and larger decay rate.

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Quantifying Carbon Stores and Decomposition in Dead Wood: A Review

Problem Addressed: Differences in sampling and quantification of dead wood.

Goal(s)/Objective(s): Review methods for quantifying dead wood in forest ecosystems, with an emphasis on biomass and carbon attributes.

Key Findings: Identifies key research needs and knowledge which at present impeed our ability to accurately characterize dead wood populations.

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Forest Management for Mitigation and Adaptation to Climate Change: Insights from Long-term Silviculture Experiments

Problem Addressed: Climate change effects on forest management

Goal(s)/Objective(s): Address the need of a management regime that simultaneously achieves adaptation and mitigation

Key Findings: Identified trade-offs between achievement of mitigation and adaptation objectives between each study

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Detecting Forest Insect Pests in Canada

Problem Addressed: Review of Blair McGugan's 1956 paper on the origins and development of the Canadian Forest Insect Survey.

Goal(s)/Objective(s): Describe capabilities of detecting forest insect pests

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Alkali Solubility as an Indication of Decay in Diseased Wood

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