1. The duff layer is the organic material layer between the uppermost soil mineral layer and the litter layer. The duff layer is decomposing organic material, decomposed to the point at which there is no identifiable organic materials (leaves, pine straw, twigs, etc).
2. Definition pending.
Created: 2019-07-09 16:30:11 PDT (-0700)
Last modified: 2019-07-09 16:30:11 PDT (-0700)