opens the authoritative record at ENA, SRA or BioSample; this page never replaces it
PRJNA630593
Pipeline 0.1.0 Contract v0.1 Licence CC-BY-4.0
Tags
- 16S rRNA
- V3-V4
- amplicon
- selection pcr
- paired-end
- Illumina MiSeq
- primers present
- CC-BY-4.0
derived from the release metadata, not hand-written
Study
The study record carries no description, and its registered title is the accession itself. The figures below are computed from the 27 released samples and 27 runs.
- Samples
- 27
- Runs
- 27
- Collection
- 2007-06 to 2007-06
Linked publication
Soil microbial community structure and functionality changes in response to long-term metal and radionuclide pollution.10.1111/1462-2920.15394 · 2021 · via europepmc
Linked by the enrich stage. Fields taken from the paper: subfragment. No per-sample coordinates in the paper.
abstract
Microbial communities are essential for a healthy soil ecosystem. Metals and radionuclides can exert a persistent pressure on the soil microbial community. However, little is known on the effect of long-term co-contamination of metals and radionuclides on the microbial community structure and functionality. We investigated the impact of historical discharges of the phosphate and nuclear industry on the microbial community in the Grote Nete river basin in Belgium. Eight locations were sampled along a transect to the river edge and one location further in the field. Chemical analysis demonstrated a metal and radionuclide contamination gradient and revealed a distinct clustering of the locations based on all metadata. Moreover, a relation between the chemical parameters and the bacterial community structure was demonstrated. Although no difference in biomass was observed between locations, cultivation-dependent experiments showed that communities from contaminated locations survived better on singular metals than communities from control locations. Furthermore, nitrification, a key soil ecosystem process seemed affected in contaminated locations when combining metadata with microbial profiling. These results indicate that long-term metal and radionuclide pollution impacts the microbial community structure and functionality and provides important fundamental insights into microbial community dynamics in co-metal-radionuclide contaminated sites.
Linked by the enrich stage from europepmc.
Location
sampling sites from the release coordinatesPlace name hierarchy
- ▸ België / Belgique / Belgien
- › Antwerpen
- › Mechelen
Districts named on the samples
- Mechelen 1
Latitude 51.13515 to 51.13569, longitude 4.60992 to 4.61159. Names resolved with OpenStreetMap Nominatim from the release's own coordinates; Coordinates parsed from the released lat_lon text field, which the pipeline keeps but does not split into latitude/longitude columns.
How the sequences were obtained
sample to releaseSample collection
27 samples, 2007-06 to 2007-06
51.1351 to 51.1357 N, 4.6099 to 4.6116 E
Storage
not reported
neither the archive nor the linked paper states storage conditions
Processing
not reported
no extraction kit or lysis protocol in the archive or the linked paper
PCR
16S rRNA V3-V4, region V3
primers: present
Sequencing preparation
not reported
no library kit or index strategy in the archive or the linked paper
Sequencing
Illumina MiSeq
27 runs; PAIRED 301.0 bp reads; the linked paper's text supports MiSeq
Denoising
dada2 1.38.0
7,000 ASVs from 304,356 reads
ampliconflow branches off at step 6, Sequencing
this releaseampliconflow starts here: 304,356 reads from 27 runs, QC to 90.8% 16S identity and 83.8% above Q30, primers trimmed, dada2 1.38.0 to 7,000 ASVs, taxonomy against a SINTAX reference, then the release (CC-BY-4.0).
Steps 1 to 6 are how the sequences were obtained, from the study's own archive metadata. Step 7 is what the authors report doing with the sequences in the linked paper. ampliconflow starts at the deposited reads rather than repeating the wet lab.
Taxonomy assigned with SILVA 138.2 (SINTAX).
The linked paper's methods run to 15,587 characters. It supports: platform, subfragment.
Conflict on sequencing platform: the release has Illumina MiSeq, the linked paper's text supports MiSeq.
27
Samples
27 runs
7k
Features
OTUs at 97%
304.4k
Reads
mapped total
124 MB
Release size
85 files
Depth floor
1,000 reads
no samples below
QC warnings
27
100% of runs warned
Reads per sample
log scale- min
- 7,750
- median
- 10,978
- max
- 17,012
Feature detection
100.0% non-zero7,000 / 7,000 features
Features with at least one observed read. The remainder are present in the reference set but not detected in these samples.
Composition
Top phyla
- Pseudomonadota 91,863 (30.2%)
- Acidobacteriota 87,638 (28.8%)
- Bacteroidota 28,574 (9.4%)
- Verrucomicrobiota 20,989 (6.9%)
- Actinomycetota 18,327 (6.0%)
- Gemmatimonadota 11,941 (3.9%)
- Myxococcota 11,795 (3.9%)
- Nitrospirota 9,576 (3.1%)
- Chloroflexota 6,698 (2.2%)
- Thermodesulfobacteriota 4,883 (1.6%)
- Planctomycetota 3,563 (1.2%)
- Methylomirabilota 2,509 (0.8%)
- Latescibacterota 1,553 (0.5%)
- Patescibacteria 638 (0.2%)
- Bacillota 554 (0.2%)
- MBNT15 419 (0.1%)
- RCP2-54 319 (0.1%)
- Candidatus Kryptonia 312 (0.1%)
- Cyanobacteriota 308 (0.1%)
- Spirochaetota 290 (0.1%)
Top genera
- Incertae Sedis 157,067 (51.6%)
- Candidatus Solibacter 14,028 (4.6%)
- Nitrospira 9,050 (3.0%)
- MND1 8,452 (2.8%)
- Bryobacter 6,743 (2.2%)
- Candidatus Udaeobacter 6,366 (2.1%)
- Flavobacterium 5,470 (1.8%)
- Acidibacter 4,939 (1.6%)
- Bradyrhizobium 4,623 (1.5%)
- Chryseotalea 4,518 (1.5%)
- GOUTA6 4,327 (1.4%)
- Candidatus Koribacter 4,172 (1.4%)
- Ellin6067 3,281 (1.1%)
- Massilia 2,996 (1.0%)
- Rhodanobacter 2,628 (0.9%)
- ADurb.Bin063-1 2,381 (0.8%)
- IS-44 2,189 (0.7%)
- Acidothermus 2,122 (0.7%)
- Gemmatimonas 2,025 (0.7%)
- Gaiella 1,955 (0.6%)
Rank-abundance
log-log7,000 ranked features, top 200 shown. A steep drop means a few taxa carry most of the reads.
Per-sample reads
27 samples- min
- 7,750
- median
- 10,978
- max
- 17,012
Downstream QC and analysis
computed from the released tablesEleven modules, computed from the released count table, the sample metadata and the per-run QC reports. Each panel states its own n and the test it used; a module that cannot run on this release is shown as a flagged gap rather than an empty frame.
Rarefaction
median with p10 to p90Expected richness when 27 samples are subsampled to a common depth, resampled 31 draws. Median 270 features observed at full depth.
Depth against richness
log depthOne point per sample. Correlation of log reads with observed features is 0.283, so the depth floor is doing most of the work of deciding how many features a sample shows.
Per-run QC
- 16S identity 90.8% alignment call per run
- Q30 rate 83.8% mean Q 34.2
- Amplicon V3-V4 primers present
- PhiX 0.0% control spike-in
27 run report(s), n/a GC, 0.0% ambiguous bases.
Diversity
- Shannon
- 4.74
- Simpson
- 0.986
- Evenness
- 0.858
- Chao1
- 270
Median across samples. Observed richness ranges 160 to 361.
Feature prevalence
0 of 7,000 features
present in at least half of the 27 samples (0.0%). 6,864 features appear in one sample only, which is the long tail rarefaction is fighting.
Ordination
One point per sample, 27 plotted. Choose the axes and the colour variable; hover a point for its sample id. The legend below the axes names the levels or the numeric range.
What explains each axis
pc1 · 5.5%
- reads 29.6%
- evenness 8.9%
- shannon 3.2%
- observed 0.0%
pc2 · 4.9%
- evenness 22.9%
- shannon 16.6%
- reads 3.8%
- observed 0.0%
pc3 · 4.7%
- reads 7.4%
- shannon 3.6%
- evenness 2.5%
- observed 0.9%
Categorical variables use eta-squared (between-group share of the axis), numeric ones the squared Pearson correlation. Computed from the released sample metadata.
Alpha diversity per sample
ShannonMedian Shannon 4.744 across the release; observed richness runs 160 to 361.
Bray-Curtis dissimilarity
27 x 27, darker is closerSample order is the release order, 27 labels, and the matrix itself ships as beta_distance.tsv beside the analysis.
Phylogenetic diversity
Not available for this release: no Newick tree beside the table; run the tree stage, then re-run analyze. The legacy analysis computed Faith's PD when the container carried a tree, and this one reports the absence instead of an empty column.
Community states
CLR, k by silhouettek = 4 silhouette 0.085
- state 0 2 samples
- state 1 1 samples
- state 2 23 samples
- state 3 1 samples
Clustered on the centred log-ratio of the top 200 features; 27 samples.
Batch-bias audit
states againstadjusted Rand n/a p = n/a
not enough levels to test
permutations. Every sample here carries both MiSeq and MiniSeq runs, so the batch variable used is the one with two levels, here .
Variance partitioning
mean R2 per feature, CLR- depth 0.000
Joint R2 0.000, so the metadata explains a modest slice of the feature variation, and the two variables are not independent of one another.
Effect size
No two-level comparison available.
Taxa against all samples
withfeatures tested, 0 survive the correction at q ≤ 0.05
Nothing survives. The smallest q is n/a, which is the honest answer for a study whose samples are spread across three years with two to thirteen samples per year.
Group difference and spread
Bray-Curtis, 999 permutations- PERMANOVA pseudo-F
- n/a · p n/a
- PERMDISP F
- n/a · p n/a
- Distance decay (Mantel r)
- 0.384 · p 0.001
The contamination class separates the communities beyond the spread within each class (PERMANOVA) with no evidence that the spread itself differs (PERMDISP). Distance decay runs over 0.0 to 0.1 km.
Spatial structure
observed richness over distance- Moran's I
- -0.0374 · p 0.547
- Gradient response (rho)
- -0.185 · p 0.374 (decreasing)
variogram, 8 distance bins, semivariance of richness
Co-occurrence network
100 nodes · 122 edges
- positive
- 122
- negative
- 0
- density
- 0.025
- components
- 43
- mean degree
- 2.4
Spearman on log1p proportions, 100 features, |r| ≥ 0.50, FDR 0.05.
Hubs by degree
Phylogenetic and signal analyses need a tree
no Newick tree beside the table; run the tree stage, then re-run analyze. The tree stage aligns the ASVs with MAFFT and builds with FastTree, both detected as external tools; neither is installed on the machine this page was built on, so Faith's PD, UniFrac, Pagel's lambda and Blomberg's K are left flagged rather than guessed.
ASV phylogeny
0 most abundant of the treeNo tree in this release.
ASV panel
no sequence fileThe representative sequences are not in this release, so length and GC cannot be drawn.
Most abundant ASVs
| ASV | phylum | genus | mean | prev. |
|---|---|---|---|---|
| ASV_1 | Nitrospirota | Nitrospira | 96.7 | 37% |
| ASV_2 | Verrucomicrobiota | Candidatus Udaeobacter | 56.4 | 30% |
| ASV_3 | Nitrospirota | Nitrospira | 43.3 | 15% |
| ASV_4 | Pseudomonadota | Rhodanobacter | 41.4 | 19% |
| ASV_5 | Acidobacteriota | Candidatus Solibacter | 38.9 | 4% |
| ASV_6 | Acidobacteriota | Incertae Sedis | 35.8 | 11% |
| ASV_7 | Acidobacteriota | Incertae Sedis | 33.8 | 19% |
| ASV_8 | Verrucomicrobiota | Candidatus Udaeobacter | 31.7 | 11% |
| ASV_9 | Acidobacteriota | Incertae Sedis | 31.7 | 15% |
| ASV_11 | Acidobacteriota | Incertae Sedis | 31.6 | 4% |
| ASV_10 | Acidobacteriota | Incertae Sedis | 31.6 | 4% |
| ASV_12 | Acidobacteriota | Candidatus Solibacter | 30.6 | 4% |
Similar studies
composition, metadata, location, shared authors- taxonomy 76% similar (genus)
- 922 km apart
- shared author(s): j, t
33 samples
- taxonomy 82% similar (genus)
- shared author(s): a, k, m
65 samples
- taxonomy 46% similar (genus)
- shared author(s): t
22 samples
- taxonomy 73% similar (genus)
23 samples
- taxonomy 72% similar (genus)
60 samples
- taxonomy 62% similar (genus)
31 samples
Ranked from the released tables: genus composition as Bray-Curtis similarity, shared environment and method terms, the distance between sample centroids, and authors shared with the linked publication.
Missing or wrong data?
Report a field that is empty or mistaken, or associate a paper with this study. No account is needed; the contact email is optional and used only to reply about this submission.
Downloads
8 files · sha256 in manifest- Count table 27 KB tables/PRJNA630593.parquet
- Count table, BIOM 91 KB tables/PRJNA630593.biom.gz
- Taxonomy 430 KB features.parquet
- Taxonomy (TSV) 462 KB taxonomy.tsv.gz
- Sample metadata 15 KB samples.parquet
- Run metadata 15 KB runs.parquet
- Sequences (fasta) 448 KB sequences/PRJNA630593.fasta.gz
- Manifest manifest.json
Files are served from https://huggingface.co/datasets/hmacgregor/ampliconflow-releases/resolve/main/PRJNA630593-20260926/ once hosting is wired. Until then the links point at a placeholder base URL.
Samples
| Sample | Collected | group | Reads | Features | Shannon | State |
|---|---|---|---|---|---|---|
| SAMN14840293 | 2007-06-07 | 11,653 | 313 | 4.991 | 2 | |
| SAMN14840294 | 2007-06-07 | 9,424 | 239 | 4.681 | 2 | |
| SAMN14840295 | 2007-06-07 | 9,805 | 299 | 4.796 | 2 | |
| SAMN14840296 | 2007-06-07 | 9,240 | 300 | 4.913 | 2 | |
| SAMN14840297 | 2007-06-07 | 9,280 | 199 | 4.55 | 2 | |
| SAMN14840298 | 2007-06-07 | 11,728 | 361 | 4.959 | 2 | |
| SAMN14840299 | 2007-06-07 | 7,750 | 262 | 4.64 | 2 | |
| SAMN14840300 | 2007-06-07 | 8,041 | 220 | 4.536 | 2 | |
| SAMN14840301 | 2007-06-07 | 10,018 | 270 | 4.658 | 2 | |
| SAMN14840302 | 2007-06-07 | 13,268 | 305 | 4.906 | 2 | |
| SAMN14840303 | 2007-06-07 | 15,027 | 281 | 4.902 | 1 | |
| SAMN14840304 | 2007-06-07 | 8,100 | 265 | 4.616 | 2 | |
| SAMN14840305 | 2007-06-07 | 11,819 | 315 | 4.534 | 2 | |
| SAMN14840306 | 2007-06-07 | 11,899 | 173 | 4.4 | 3 | |
| SAMN14840307 | 2007-06-07 | 11,379 | 288 | 4.622 | 2 | |
| SAMN14840308 | 2007-06-07 | 13,121 | 331 | 4.839 | 0 | |
| SAMN14840309 | 2007-06-07 | 10,576 | 160 | 4.43 | 0 | |
| SAMN14840310 | 2007-06-07 | 10,568 | 303 | 4.721 | 2 | |
| SAMN14840311 | 2007-06-07 | 10,887 | 259 | 4.912 | 2 | |
| SAMN14840312 | 2007-06-07 | 8,648 | 225 | 4.649 | 2 | |
| SAMN14840313 | 2007-06-07 | 11,922 | 248 | 4.767 | 2 | |
| SAMN14840314 | 2007-06-07 | 10,978 | 264 | 4.814 | 2 | |
| SAMN14840315 | 2007-06-07 | 12,357 | 290 | 5.033 | 2 | |
| SAMN14840316 | 2007-06-07 | 14,201 | 307 | 5.113 | 2 | |
| SAMN14840317 | 2007-06-07 | 17,012 | 280 | 4.886 | 2 | |
| SAMN14840318 | 2007-06-07 | 14,930 | 225 | 4.744 | 2 | |
| SAMN14840319 | 2007-06-07 | 10,725 | 231 | 4.542 | 2 |
click a column head to sort