Table 1. Average (n = 6 (±1 standard error)) physical, chemical and biological properties of soil intervals and the results of a split-plot ANOVA.
| Soil Fraction | %N | %C | C:N ratio | pH | Water Content (%) | GRSP mg(g soil)-1 | Fungal 18S rRNA Gene Copy No. |
|---|---|---|---|---|---|---|---|
| CT | 0.16 (0.01) | 1.94 (0.19) | 12.0 (0.54) | 7.30 (0.12) | 2.57 (0.56) | 3.95 (0.34) | 5.45x107 (4.99x107) |
| CB | 0.10 (0.003) | 0.96 (0.03) | 9.5 (0.19) | 7.91 (0.09) | 5.73 (0.29) | 2.81 (0.34) | 3.79x108 (3.57x108) |
| ST | 0.20 (0.02) | 3.05 (0.28) | 14.9 (0.40) | 7.44 (0.17) | 1.37 (0.40) | 5.75 (0.66) | 7.23x106 (1.59x106) |
| SB | 0.11 (0.003) | 1.52 (0.10) | 13.4 (0.86) | 8.22 (0.02) | 3.98 (0.17) | 2.53 (0.12) | 6.06x107 (1.97x107) |
| Split-plot ANOVA | |||||||
| veg. type | 6.37; 1,9.94; 0.030 | 22.26; 1,22; 0.0008 | 28.41; 1,22; 0.0003 | nse | 15.71; 1,8.63; 0.0036 | nse | nse |
| depth 1 | 190.6; 1,∞; 0 | 48.11; 1,22; 4.0 x10-5 | 19.68; 1,22; 0.0013 | 36.7; 1,22; 0.00012 | 103.9; 1,∞; 0 | 21.7; 1,∞; 3.2 X10-6 | nse |
1As noted in the results section, in the method of Brunner et al. [37], the denominator degrees of freedom for the test for split plot effects and the interaction of whole and split plots will be infinite. As a practical matter, the upper tailed probabilities for large and infinite denominator degrees of freedom will be subequal. Thus, the code for this algorithm in [38] uses 10,000 denominator degrees of freedom for these tests.