Table 1 Summary statistics for Mantel tests. The Mantel statistic r(AB) estimates the correlation between two proximity matrices, A and B. Also given is P, which can be used to ascertain whether the Mantel regression coefficients were significantly different from zero following 9,999 permutations

From: Impacts of the Three Gorges Dam on microbial structure and potential function

Matrix A

Matrix B

r(AB)

P

16S rRNA gene sequencinga

Environmental factorsd

−0.524

0.042

GeoChip 5.0b

Environmental factors

−0.706

0.002

Metagenomic shotgun sequencingc

Environmental factors

−0.564

0.029

  1. aBray-Curtis dissimilarity matrix calculated from the OTU composition classified with a 97% cutoff.
  2. bBray-Curtis dissimilarity matrix calculated from gene signal intensities.
  3. cBray-Curtis dissimilarity matrix calculated from the relative abundance of KEGG orthology.
  4. dEuclidean distance matrix calculated from the total phosphorus (TP), ammonium nitrogen (N-NH4), nitrate nitrogen (N-NO3), chemical oxygen demand (COD) and temperature.
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