Estimates of downed woody debris decay class transitions for forests across the eastern United States
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Ecological Modelling. 251: 22-31.
Large-scale inventories of downed woody debris (DWD; downed dead wood of a minimum size) often record decay status by assigning pieces to classes of decay according to their visual/structural attributes (e.g., presence of branches, log shape, and texture and color of wood). DWD decay classes are not only essential for estimating current DWD biomass and carbon stocks, but may also facilitate the prediction of future DWD attributes. Estimating temporal transitions between decay classes may provide a mechanism for projecting DWD attributes in forest ecosystems. To date, modeling decay class transitions for individual DWD pieces has not been fully explored in this context. The goal of this study was to use a repeated DWD inventory across the eastern US to estimate decay class transitions to inform DWD dynamics across this broad geographic region. Using matched and non-matched DWD from the repeated inventory, ordinal regression techniques were used to estimate the five-year probability of a DWD piece remaining in the same decay class or moving into more advanced decay classes.
KeywordsForest inventory; Carbon flux; Coarse woody debris; Biomass; Bioenergy
Russell, Matthew B.; Woodall, Christopher W.; Fraver, Shawn; DAmato, Anthony W. 2013. Estimates of downed woody debris decay class transitions for forests across the eastern United States. Ecological Modelling. 251: 22-31. https://doi.org/10.1016/j.ecolmodel.2012.12.012.