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| Abstract or Summary |
- Forest managers have little information of the effects of common restoration treatments, thinning and burning,
on dead woody material (DWM) dynamics in fire-suppressed forests. Fine woody debris (FWD; 0.6–29.9 cm),
coarse woody debris (CWD; ≥30.0 cm), and snags (≥5 cm) were inventoried and mapped in eighteen 4 ha plots before
and after applying thinning (overstory, understory, and no thinning) and burning (burn and no burn) treatments. The
combination of burning and thinning reduced FWD and CWD quantity and mean piece size, removed highly decayed
logs, and increased small (5.0–24.9 cm) snag recruitment. In contrast, thin-only treatments produced similar results but
increased FWD and did not remove many small snags. There were no differences in DWM response between the two
thinning treatments. Log and snag spatial patterns prior to and following treatment were similar. These results indicate
that burning in combination with thinning is more effective at reducing surface FWD and CWD, and removing small
trees than are burn-only and thin-only treatments. Although large snags and logs were consumed in the burn, long-term
recruitment of these habitat structures relies on managers retaining large-diameter trees. Repeated burns need to be conducted
after initial restoration treatments to understand natural patterns of DWM.
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| Date Available |
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| Date Issued |
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| Citation |
- Innes, J. C., North, M. P., & Williamson, N. (2006). Effect of thinning and prescribed fire restoration treatments on woody debris and snag dynamics in a Sierran old-growth, mixed-conifer forest. Canadian Journal of Forest Research, 36, 1-11.
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| Rights Statement |
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| Peer Reviewed |
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| Additional Information |
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Previous issue date: 2006
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