| NGS | Next-Generation Sequencing |
| rRNA | ribosomal RNA |
| OTUs | Operational Taxonomic Units |
| QIIME | Quantitative Insights Into Microbial Ecology |
| DADA2 | Divisive Amplicon Denoising Algorithm 2 |
| ZOTUs | zero-radius OTUs |
| Bp | base pair |
| PCoA | Principal Coordinates Analysis |
| PICRUSt | Phylogenetic Investigation of Communities by Reconstruction of Unobserved States |
| ITSs | Internal Transcribed Spacers |
| PCR | Polymerase Chain Reaction |
| PanPhlAn | pangenome-based phylogenomic analysis |