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. 2021 Dec 8;4:1376. doi: 10.1038/s42003-021-02907-3

Table 1.

Significance tests of the effects of SOM content and translocation warming on bacterial and fungal community structure with three different statistical approaches.

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.