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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.

Downloads: 2

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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.

Downloads: 3

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Forest management for mitigation and adaptation to climate change: Insights from long-term silviculture experiments

Problem Addressed: Forest management strategies for addressing global climate change

Goal(s)/Objective(s): Determine long-term efficacy of mitigation and adaptation strategies

Key Findings: There are trade-offs between the achievement of mitigation and adaptation objectives

Recommendation: Rigid adherence to a single objective, without recognizing potential consequences to other ecosystem components, may be detrimental to long-term ecosystem functioning within the context of environmental change

Downloads: 4

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Net Carbon Flux of Dead Wood in Forests of the Eastern US

Problem Addressed: How to assess downed dead wood (DDW) carbon net flux

Goal(s)/Objective(s): Explore DDW carbon net flux in relation to other woody C pools and site/stand attributes

Key Findings: Diversity of ecosystem and number of organisms contribute to the complex dynamics of DDW carbon flux.

Recommendation: Assessing scale and timeframes of DDW C net flux to the atmosphere and other pools would benefit stand-level management.

Downloads: 2

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Woody Debris Volume Depletion Through Decay: Implications for Biomass and Carbon Accounting

Problem Addressed: Underestimation of decay rates

Goal(s)/Objective(s): Develop method for estimating changes in log volume through time

Key Findings: Decaying logs have a collapse ratio that can serve as a surrogate for the volume remaining

Recommendation: Accounting for log volume depletion improves biomass-loss and carbon-accounting methods

Downloads: 4

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Effects of multiple interacting disturbances and salvage logging on forest carbon stocks

Problem Addressed: Multiple disturbances or post-disturbance forest management activities on ecosystem carbon stocks.

Goal(s)/Objective(s): Quantify how forest carbon stocks respond to stand-replacing blowdown and wildfire

Key Findings: Potential increases in multiple disturbance events may represent a challenge for sustaining ecosystem carbon stocks

Downloads: 1

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Ecological Impacts of Energy-Wood Harvests: Lessons from Whole-Tree Harvesting and Natural Disturbance

Problem Addressed: Expected impacts of even-aged energy-wood harvesting (EWH) on ecosystem structure and function

Goal(s)/Objective(s): Summarize existing knowledge to anticipate the impacts of EWH on carbon stocks, nutrients, terrestrial biodiversity, and associated aquatic ecosystems.

Key Findings: Harvesting impacts and forest sustainablitliy have relevance for examining potential consequences for biodiversity and aquatic ecosystems

Recommendation: Data is needed to address the longterm ecosystem sustainability of EWH and inform decisions concerning the acceptability of forest-derived wood as an important energy source worldwide

Downloads: 4

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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

Downloads: 0

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Estimates of Downed Woody Debris Decay Class Transitions for Forests Across the Eastern United States

Problem Addressed: Decay status being categorized by visual/structural attributes, not temporal transitions between DWD.

Goal(s)/Objective(s): Use a repeated DWD inventory across the eastern US to estimate decay class transitions to inform DWD dynamics across this broad geographic region

Downloads: 0

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