| Losing reads at DADA2 Merge step 30% of my samples lost over 50% - I have tried multiple steps to fix- please help | | 1 | 9 | Tue Jul 21 2026 |
| Can DADA2 be used with nearly uniform Q38 quality scores? | | 2 | 21 | Tue Jul 21 2026 |
| Sequencing platform fully confounded with study period: MiSeq vs NextSeq 2000 (16S rRNA V3-V4) | | 3 | 60 | Tue Jul 07 2026 |
| QIIME 2 processing of MiSeq i100 data with constant quality scores | | 3 | 99 | Mon Jun 08 2026 |
| Running DADA2 on pre-processed data | | 7 | 99 | Wed Jun 03 2026 |
| Query about false read merging or no read merging | | 1 | 37 | Tue May 26 2026 |
| Merging NGS with TGS? | | 3 | 60 | Wed May 20 2026 |
| Under the hood of the "Moving Pictures" tutorial | | 0 | 140 | Wed May 13 2026 |
| sequence alignment | | 5 | 69 | Mon May 11 2026 |
| An error was encountered while running DADA2 in R (return code 1), inspect stdout and stderr to learn more | | 10 | 117 | Fri May 08 2026 |
| Help - DADA2 microbiome analysis | | 3 | 57 | Mon May 04 2026 |
| Qiime version and singletons | | 3 | 73 | Mon Apr 27 2026 |
| High number of unique sequences in PacBio full-length 16S CCS data with DADA2 | | 2 | 110 | Fri Apr 24 2026 |
| Low overlap due to poor reverse read quality in 2×300 bp V3–V4 amplicon sequencing (DADA2) | | 1 | 65 | Mon Apr 13 2026 |
| High but variable sequence loss (32-68%) during DADA2 filtering with V3-V4 amplicons (MiSeq 600 cycles) | | 2 | 108 | Thu Apr 09 2026 |
| Inadequate overlap for V3-V4 (paired-end) due to quality drop | | 5 | 117 | Mon Mar 09 2026 |
| Integrating V3-V4 and V4 16S datasets for large-scale meta-analysis: Is Greengenes2 the optimal choice for cross-region alignment? | | 1 | 147 | Fri Mar 06 2026 |
| Too many elements for DADA2 - denoise in batches? | | 6 | 140 | Wed Mar 04 2026 |
| Analysis with DADA2... Merge Read Length | | 1 | 53 | Wed Mar 04 2026 |
| denoise failure | | 5 | 72 | Tue Feb 24 2026 |
| Huge difference of DADA2 output with and without removing primers | | 4 | 109 | Tue Jan 27 2026 |
| Advice in best practice for handling multiple sequencing runs and subset analyses in QIIME 2 (DADA2) | | 2 | 104 | Fri Jan 16 2026 |
| pair ended demultiplexed qza file causing strange error. | | 1 | 60 | Sun Dec 28 2025 |
| High read loss due to artifacts and chimera after denoising 16S V3-V4 paired-end reads | | 1 | 67 | Wed Dec 17 2025 |
| Denoising low quality reverse reads in paired-end sequencing reads | | 4 | 89 | Wed Dec 03 2025 |
| Issue with UNITE classifier for ITS1 | | 1 | 81 | Tue Dec 02 2025 |
| Error was encountered while running DADA2 in R (return code 1) | | 6 | 104 | Mon Dec 01 2025 |
| DADA2 denoising taking long time | | 6 | 140 | Mon Dec 01 2025 |
| Questions about performing quality control with dada2 and generating a feature table | | 2 | 54 | Sat Nov 29 2025 |
| DADA2 priors trimming | | 1 | 37 | Tue Nov 18 2025 |
