TABLE 3.
Variation partitioning of fungal communities based on three beta-diversity indicesa
Beta-diversity index and component |
Variation explained (%) |
||
---|---|---|---|
0-10cm layer | 10-20cm layer | 20-40cm layer | |
Sørensen’s index | |||
[E|S] | 1.47 | 4.26** | 1.32 |
[S|E] | 4.06** | 6.58** | 2.53* |
[E∩S] | 0.01 | 1.04 | 1.68 |
[R] | 94.46 | 88.12 | 94.47 |
Bray-Curtis dissimilarity | |||
[E|S] | 6.39** | 0.74 | NS |
[S|E] | 3.41** | 12.97*** | NS |
[E∩S] | 1.51 | 4.35 | NS |
[R] | 88.69 | 81.94 | NS |
Jaccard distance | |||
[E|S] | 3.21** | 2.89** | 1.01 |
[S|E] | 2.20** | 4.52** | 1.82* |
[E∩S] | 0.44 | 0.63 | 1.08 |
[R] | 94.15 | 91.95 | 96.09 |
Four different components are shown: pure environmental fraction ([E|S]), pure spatial fraction ([S|E]), shared fraction of environmental and spatial effects ([E∩S]), unexplained fraction ([R]). Values shown in boldface type showed significant effects. *, **, and *** indicate significant effects at P < 0.05, 0.01, and 0.001, respectively. NS indicates that variation partitioning could not be conducted because the subset of environmental variable was lacking.