| OTUs | Operational taxonomic units |
| PCoA | Principal coordinates analysis |
| NGS | Next-generation sequencing |
| OM | Organic matter |
| QIIME | Quantitative Insights Into Microbial Ecology |
| UPGMA | Unweighted pair group method with arithmetic mean |
| ANOVA | Analysis of variance |
| PCA | Principal component analysis |
| PLS-DA | Partial least squares discriminant analysis |
| PERMANOVA | Permutational multivariate analysis of variance |
| PERMDISP | Permutational analysis of multivariate dispersions |