the dry treatments at 4 and 12 weeks. Dry treatment activities in the 0 to -10 cm layer

were significantly higher in WCA-3A but were not significantly higher in ENP-TS until

12 weeks. There were significant time effects in the benthic but not the 0 to -10

cm layer. Comparing areas, there were generally no significant differences in the benthic

layer. However, the WCA-3A dry treatments were significantly higher than the ENP-TS

dry treatments in the 0 to -10 cm layer.

 Phenol oxidase activities were widely variable and ranged from 6.95 to 476.32

moles DICQ g-1 AFDM h-1 (Table 5-2). The majority of benthic and 0 to -10 cm layer

phenol oxidase activities were significantly higher in the ENP-TS cores. Significant

differences between treatments were confined to the 4 and 12 week WCA-3A samples,

with greater PHE activity in the wet cores. There was not a consistently clear

relationship with depth.

 Peroxidase activities ranged from 0 to 59.31 moles DICQ g-1 AFDM h-1 with the

majority of enzyme activities unresolvable. There were no significant differences

between treatments, time periods, or depth. This can be attributed to the very large

replicate errors.

 Ecell/Eox values reflect the apparent lignin influence on C mineralization.

Significantly higher values were associated with the WCA-3A cores in all depths and

treatments. Values generally decreased with depth, reflecting a greater lignin influence

on C mineralization. WCA-3A dry treatments were significantly higher than the wet

treatments at 4 and 12 weeks in the benthic layer and only at 2 weeks in the 0 to -10 cm

layer. Conversely, the ENP-TS benthic and 0 to -10 cm layers generally exhibited higher

values in the wet treatment with only 1 significant contrast.