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Measuring the Effects of Freezing Injury on Red Spruce (Picea rubens Sarg.) Needles

Problem Addressed: Freezing foliage leading to a decline of Red spruce in northeastern North America
Goal(s)/Objective(s): The effect of thawing rate on freezing injury, relation of mass exchange and chlorophyll loss to electrolyte leakage, and Rhizosphaera kalkhoffii Bubák interacts with freeze-injured needles.
Key Findings: Photosynthesis most sensitive measure, Faster thaw rates increase damage.
Views: 1000
Downloads: 0
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An Analysis of Inconsistencies in Environmental Protection Standards Pertaining to Forest Management Activities in Maine

Problem Addressed: Environmental protection standards inconsistencies pertaining to forest management activities in Maine.
Goal(s)/Objective(s): Provide an overview of the legislative process in Maine, identify a process for analyzing comparable laws and regulations, present the findings of the analysis, and suggest future courses of action.
Key Findings: ) a brief history of the evolution of this paper, 2) a literature review of policy formulation processes, 3) a procedural look at how laws move through the Maine Legislature, 4) a summary of how policy formulation and the legislative process combine to result in incremental growth of regulatory inconsistencies, and finally, 5) a review of the state laws and agencies.
Views: 1144
Downloads: 1
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Avian Spatio-Temporal Dynamics and the Core-Satellite Species Hypothesis

Problem Addressed: Avian abundance and distribution patterns for New England using data from the U.S.G.S. Biological Resources Division's Breeding Bird Survey (BBS).
Goal(s)/Objective(s): Test predictions of Hanski's core-satellite hypothesis, Brown's ecological specialization hypothesis and Wright's sampling hypothesis to determine which best explained the observed patterns in the three distinct avifaunal regions within New England.
Key Findings: Classification and regression tree analyses indicated no correlation between the spatial exponents and natural history correlates; only 15-25% of the mean deviance of the temporal exponents was explained by life history correlates.
Views: 1067
Downloads: 0
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Overstory Canopy Influences on Height Development of Red Spruce and Balsam Fir Saplings

Problem Addressed: Effects of overstory canopy structure on height development of red spruce and balsam fir saplings is critical for managing multi-cohort forests in Maine.
Goal(s)/Objective(s): Use predictive models to develop and examine the relationships between gap fraction and pine overstory basal area, crown projection area, and projected leaf area, and height increment of open-grown and understory red spruce and balsam fir sapling and gap fraction.
Key Findings: On fair sites, spruce and fir height growth can be maximized if grown beneath approximately 65 percent gap fraction, which is equivalent to a pine leaf area index of 1.0 (m2/ha/ha), or a basal area of 10 (m2/ha). In addition, spruce and fir saplings growing beneath 30 percent gap fraction, a pine leaf area index of 2.0 (m2/ha/ha), or a basal area of 25 (m2/ha), will not suffer in decreased height growth compared with open-grown trees.
Views: 890
Downloads: 0
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