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Assessment of Harvest Characteristics and Silvicultural Outcomes Survey: A Component of the Maine Forest Service Multi-Resource Harvest Assessment Protocol

Problem Addressed: Classifying harvested stands

Goal(s)/Objective(s): Testing and refining a method for classifying forest harvests in Maine

Key Findings: The sampling approach proved reliable under a wide range of harvested stand conditions.

Recommendation: The classification system offers a new approach to objectively classify forest harvests.

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Silviculture and the Spruce Budworm in Maine

Problem Addressed: Spruce Budworm

Key Findings: Fir, the primary host of the budworm, is here to stay and while we may reduce its representation in our stands, it will always be sufficient to provide a food source for the budworm; silvicultural practices may reduce the losses from budworm attack, and can reduce the impact of the budworm on our total production by promoting rapid growth in new stands.

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Long-term spatial and structural dynamics in Acadian mixedwood stands managed under various silvicultural systems

Problem Addressed: Differences in spatial pattern, species mingling, height differentiation, and relative stand complexity index (rSCI).

Goal(s)/Objective(s): To determine differences in spatial pattern, species mingling, height differentiation, and relative stand complexity index (rSCI) due to five treatments: commercial clear-cutting, fixed diameter-limit, 5 year single-tree selection, three-stage shelterwood (both with and without precommercial thinning), and unharvested natural areas.

Key Findings: Precommercial thinning in a shelterwood treated stand generally increased species mingling, height differentiation, and rSCI. Two untreated natural areas exhibited divergent pathways of structural development. Dynamics in uneven-aged selection treatments more closely resembled that of the untreated natural areas than did the shelterwood, commercial clearcut, or fixed diameter-limit treatments.

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Assessing and Modeling Snag Survival and Decay Dynamics for the Primary Species in the Acadian Forest of Maine, USA

Problem Addressed: Lack of understanding of snags

Goal(s)/Objective(s): Develop quantitative models to better understand snag survival and decay dynamics

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Assessing and Modeling Standing Deadwood Attributes Under Alternative Silvicultural Regimes in the Acadian Forest region of Maine, USA

Problem Addressed: Standing Deadwood in Forests

Goal(s)/Objective(s): Snags in various stages of decay were inventoried across eight silvicultural treatments in eastern spruce–fir forests in central Maine nearly 60 years after treatments were initiated. Several modeling strategies were developed to estimate number of snags per hectare in various stages of decay.

Key Findings: Help with reducing disparities between observed and modeled snag stocking levels and further understanding of relationships between live and standing dead trees inherent to eastern spruce-fir forests.

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Effect of gap harvesting on epiphytes and bark-dwelling arthropods in the Acadian forest of central Maine

Problem Addressed: Epiphyte and Arthropod Communities

Goal(s)/Objective(s): To determine effects on epiphyte and anthropod communities from red maple trees

Key Findings: Arthropod and epiphyte assemblages dwelling on the bark of red maple trees located in undisturbed forest and harvest gaps varied with height.Canonical correlation analysis revealed a positive association between bryophytes, Collembola, and Araneae. A strong correlation between Collembola and Araneae suggested a possible trophic interaction that may be affected by gap harvesting through a reduction in bryophyte abundance.

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Maine Forest and Forest Products Survey – Preliminary Findings

Problem Addressed: How do Maine residents view forests, forestry, and the emerging bioproducts industry.

Goal(s)/Objective(s): Explore Maine resident views toward forest conditions, practices, and new forest uses for bioenergy and other products.

Key Findings: Forest sustainability is a key concern both state-wide and in mill towns.

Recommendation: Maine residents express strong support for forestry and forest products. Sustainable harvesting is a precondition, as is stakeholder engagement in the development of new forest-based processing technologies.

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Practical economics of forest ecosystem management: case of Ukrainian Carpathians

Problem Addressed: Longterm planning issues in forest management in Carpathians

Goal(s)/Objective(s): Enrich discussion of issues not addressed in recent formal planning

Key Findings: Planning systems need major improvements; financial soundness of "back to Nature" not certain

Recommendation: Assess practical economic issues more deeply; consider market context

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Influence of partial harvesting and site factors on the abundance and composition of natural regeneration in the Acadian Forest of Maine, USA

Problem Addressed: Understanding the factors regulating the composition and abundance of natural regeneration in Acadian forest ecosystems.

Goal(s)/Objective(s): Importance of silvicultural treatment and site factors in structuring the species composition and abundance of natural regeneration.

Key Findings: Overstory and understory vegetation exhibit greater control over regeneration patterns than substrate and soil attributes, or silvicultural treatment, in partially harvested mixedwood stands.

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Long-term compositional dynamics of Acadian mixedwood stands under different silvicultural regimes

Problem Addressed: Forest response to natural disturbances and silvicultural treatments over time

Goal(s)/Objective(s): Tree species composition versus initial composition and harvest disturbance history after 5 decades of silvicultural treatments

Key Findings: Higher harvest intensity increases dominance by early successional species; lighter harvests maintain dominance by late successional species

Recommendation: Sustaining cedar recruitment may require additional silvicultural treatments

Downloads: 4

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