Table 3. Spatial and temporal compaction effects on relative bacterial and fungal abundance.
| Main testa | Relative bacterial abundance [16 S copies g−1 soil] | Relative fungal abundance [ITS copies g−1 soil] |
|---|---|---|
| Site (F1,12) | 70.7*** | 56.5*** |
| Compaction (F2,12) | 22.4*** | 111.7*** |
| Site × Compaction (F2,12) | 2.8ns | 53.0*** |
| Time (F1,12) | 6.9* | 74.4*** |
| Time × Site (F1,12) | 22.1*** | 100.7*** |
| Time × Compaction (F2,12) | 3.7ns | 3.3ns |
| Time × Site × Compaction (F2,12) | 4.9* | 25.5* |
|
Pairwise testb | ||
| C0 | 5.96±1.20 [ × 1010]A | 1.41±0.22 [ × 108]A |
| C1 | 7.00±2.10 [ × 1010]A | 2.62±0.81 [ × 108]A |
| C2 | 2.36±0.54 [ × 1010]B | 0.44±0.14 [ × 108]B |
Abbreviations: C0, no compaction; C1, light compaction; C2, severe compaction.
Effects of main factors and their interactions assessed by repeated measures factorial ANOVA (degrees of freedom for each factor and the corresponding error term are given in brackets). Main factors represent site (Ermatingen, Heiteren), time (30, 180, 365, 1460 days), and compaction (C0, C1, C2). Values in table represent the F-ratio and the level of significance (ns, not significant; *P<0.05; **P<0.01; ***P<0.001).
Pairwise comparisons between compaction treatments using Fisher's protected LSD post-hoc test and Holm-based P-value adjustments. Values in table represent means±s.e. (n=12). Different superscript capital letters indicate significant differences at P<0.05.