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Table I
Decay classes tested in the field recorded for each log or snag (Modified from Wadell, ).
| Decay class | Definition |
|---|---|
| Absent | Intact wood |
| Low | Sapwood partially decayed, heartwood intact |
| Medium | Sapwood decayed, can be pulled by hand, |
| heartwood intact | |
| High | Sapwood totally rotten, heartwood rotten, log does |
| not support its weight, but shape remains | |
| Very high | No structural integrity, no longer maintains |
| shape, soft |