Table 3-6. Enzyme ratios calculated with normalized apparent enzyme activity
 means and associated standard errors. Values expressed are unitless.
 Ecell/Eox is the apparent lignin influence on C mineralization, Ecell/Ep and
 Ecell/En are the apparent phosphorus and nitrogen influences on C
 mineralization and EICQ is the Enzyme Index of Carbon Quality. ND reflects
 a lack of replication due to zero oxidative enzyme activities in the
 denominator, thus reflecting conservatively low estimates.


Site Ecell/ Eox


ECB
ESB
EOB
RCB
RSB
ROB
ECS
ESS
EOS
RCS
RSS
ROS


Ecell/Ep Ecell/En


EICQ


1.18 0.11 1.43 0.26 1.11 0.20 5.35 0.54
1.06 0.06 1.26 0.10 1.16 0.28 4.99 0.41
4.47 + 2.48 1.33 0.13 0.86 0.13 19.02 10.48
0.81 0.41 2.38 0.41 2.52 0.30 3.42 1.32
0.58 0.15 0.97 0.19 1.16 0.09 3.25 0.33
2.24 ND 0.57 0.03 0.71 0.10 7.98 ND
0.91 0.09 26.19 2.69 1.57 0.25 3.44 0.20
1.10 + 0.46 33.81 2.02 1.55 0.26 4.00 1.24
1.24 0.11 22.60 2.06 1.25 0.04 4.50 + 0.27
0.63 0.08 3.03 0.12 1.29 0.16 2.95 0.19
0.48 0.15 4.04 0.62 0.79 0.13 2.68 0.39
0.39 0.06 1.28 0.22 0.47 0.07 2.92 0.23


Table 3-7. Correlation coefficients for soil and benthic layer enzyme ratio
 components and nutrient data. Regressions significant at P<0.05 unless
 otherwise noted. NS=not significant. Ecell/Ep and Ecell/En are the apparent
 phosphorus and nitrogen influences on C mineralization and EICQ is the
 Enzyme Index of Carbon Quality. TN= total nitrogen, TOC=total organic
 carbon and TP=total phosphorus.


 Benthic Soil
 TN TOC TP TN TOC TP
 Ecell/En -0.77 -0.70 -0.60 Ecell/En NS 0.63 0.87
 Ecell/Ep -0.56 -0.51 NS Ecell/Ep NS 0.81 0.62
 Ecell/Eox NS NS 0.57 Ecell/Eox NS 0.68 0.56
 EICQ 0.47 NS 0.62 EICQ 0.51 NS NS