Table 1.
Microbes | Adonisa | ANOSIMb | MRPPc | ||||
---|---|---|---|---|---|---|---|
F | pd | R | pd | δ | pd | ||
SOM | Bacteria | 26.90 | <0.001 | 0.902 | <0.001 | 0.359 | <0.001 |
Fungi | 11.98 | <0.001 | 0.64 | <0.001 | 0.18 | <0.001 | |
Translocation warming | Bacteria | 4.85 | <0.001 | 0.11 | <0.001 | 0.039 | <0.001 |
Fungi | 8.20 | <0.001 | 0.29 | <0.001 | 0.075 | <0.001 |
All three tests are nonparametric multivariate analysis based on dissimilarities among samples.
aPermutational multivariate analysis of variance using distance matrices. Significance tests were carried out using F-tests based on sequential sums of squares from permutations of the raw data.
bAnalysis of similarities. Statistic R is based on the difference of mean ranks between groups and within groups. The significance of observed R is assessed by permuting the grouping vector to obtain the empirical distribution of R under the null model.
cMulti-response permutation procedure. Statistic δ is the overall weighted mean of within-group means of the pairwise dissimilarities among sampling units. The significance test is the fraction of permuted δ that is less than the observed δ.
dp-Value of corresponding significance test.