
Fig. 1.
Distribution of amplicon sequence variants (ASVs) in samples collected from October 2022 (YD_10) to March 2023 (YD_03). Each color represents a group, the number of exclusive ASVs in each month is shown in ellipses, and the number of shared ASVs is shown in circles.

Fig. 2.
Linear discriminant analysis (LDA) effect size analysis of differentially abundant (log10 LDA scores >2) bacterial taxa.

Fig. 3.
Alpha diversity indexes in samples collected from October 2022 (YD_10) to March 2023 (YD_03).

Fig. 4.
Principal component analysis (PCA) and principal coordinate analysis (PCoA). Each point is a sample, and each color represents the samples collected from October 2022 (YD_10) to March 2023 (YD_03). The lines indicate relative distances.

Fig. 5.
Functional classification of proteins in a sample collected in December 2022 based on the Clusters of Orthologous Groups database.

Fig. 6.
Relative abundance of Kyoto Encyclopedia of Genes and genomes (KEGG), KEGG Orthology, and MetaCyc pathways. The bars indicate relative abundances.
Table S1.
Statistical table of sequence before and after quality control
| Sample ID | Input | Filtered | Percentage of input passed filter | Denoised | Merged | Percentage of input merged | Non-chimeric | Percentage of input non-chimeric |
|---|---|---|---|---|---|---|---|---|
| YD_10_1 | 88539 | 76474 | 86.37 | 76230 | 75379 | 85.14 | 69127 | 78.08 |
| YD_10_2 | 81862 | 71466 | 87.30 | 71173 | 70707 | 86.37 | 65069 | 79.49 |
| YD_10_3 | 96019 | 73865 | 76.93 | 73617 | 73020 | 76.05 | 67709 | 70.52 |
| YD_11_1 | 86631 | 74613 | 86.13 | 74311 | 73526 | 84.87 | 68256 | 78.79 |
| YD_11_2 | 83855 | 73638 | 87.82 | 73365 | 72576 | 86.55 | 67742 | 80.78 |
| YD_11_3 | 84939 | 74215 | 87.37 | 74000 | 73202 | 86.18 | 67951 | 80.00 |
| YD_12_1 | 81283 | 70421 | 86.64 | 70147 | 69237 | 85.18 | 64245 | 79.04 |
| YD_12_2 | 110139 | 96774 | 87.87 | 96181 | 94097 | 85.43 | 65177 | 59.18 |
| YD_12_3 | 84101 | 73780 | 87.73 | 73324 | 72304 | 85.97 | 66716 | 79.33 |
| YD_01_1 | 92436 | 80547 | 87.14 | 80054 | 79032 | 85.50 | 67321 | 72.83 |
| YD_01_2 | 81970 | 71802 | 87.60 | 71398 | 70603 | 86.13 | 64468 | 78.65 |
| YD_01_3 | 84961 | 74332 | 87.49 | 73994 | 73303 | 86.28 | 66340 | 78.08 |
| YD_02_1 | 89603 | 78158 | 87.23 | 77797 | 76893 | 85.82 | 69627 | 77.71 |
| YD_02_2 | 84113 | 73750 | 87.68 | 73377 | 72468 | 86.16 | 65430 | 77.79 |
| YD_02_3 | 85446 | 74825 | 87.57 | 74473 | 73703 | 86.26 | 68538 | 80.21 |
| YD_03_1 | 86101 | 75922 | 88.18 | 75540 | 74479 | 86.50 | 67065 | 77.89 |
| YD_03_2 | 85007 | 72912 | 85.77 | 72556 | 71671 | 84.31 | 63921 | 75.19 |
| YD_03_3 | 80454 | 70818 | 88.02 | 70503 | 69839 | 86.81 | 64284 | 79.90 |