Site-by-ASV table

ASVs produced by the DADA2 pipeline in R. To improve comparability, samples with small library sizes (<1000 reads per sample) were excluded from the analysis and the remaining samples (n=28) were rarified to the lowest number of reads per sample (3435) to account for different sequencing efforts.本数据集涵盖R语言环境下DADA2分析流程生成的扩增子序列变异体（Amplicon Sequence Variants，ASVs）。为提升分析结果的可比性，本研究剔除了单样本读段数少于1000的低文库量样本，并对剩余的28个样本进行稀疏化标准化处理，将其测序深度统一至所有剩余样本中的最低读段数3435，以抵消不同样本间测序投入量的差异。