Evidence map›Paper›PMID 34103697›Full record

ArticleThe ISME journal2021

Microbial community structure in hadal sediments: high similarity along trench axes and strong changes along redox gradients.

Clemens Schauberger, Ronnie N Glud, Bela Hausmann, Blandine Trouche, Lois Maignien, Julie Poulain, Patrick Wincker, Sophie Arnaud-Haond, Frank Wenzhöfer, Bo Thamdrup

Abstract read
In one paragraph

Article in The ISME journal, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

27 citing papers in PubMed.

  1. Article
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  9. Alkane degradation mechanism ofFrontiers in microbiology · 2025
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  14. Article
  15. Article
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  20. "Applied and environmental microbiology · 2023
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors.

Clemens SchaubergerHadal & Nordcee, Department of Biology, University of Southern Denmark, Odense, Denmark. schauberger@biology.sdu.dk.ORCID http://orcid.org/0000-0002-2097-4959
Ronnie N GludHadal & Nordcee, Department of Biology, University of Southern Denmark, Odense, Denmark.ORCID http://orcid.org/0000-0002-7069-893X
Bela HausmannJoint Microbiome Facility of the Medical University of Vienna and the University of Vienna, Vienna, Austria.ORCID http://orcid.org/0000-0002-0846-1202
Blandine TroucheUniv Brest, CNRS, IFREMER, Microbiology of Extreme Environments Laboratory, Plouzané, France.ORCID http://orcid.org/0000-0003-4307-4782
Lois MaignienUniv Brest, CNRS, IFREMER, Microbiology of Extreme Environments Laboratory, Plouzané, France.ORCID http://orcid.org/0000-0002-5571-5228
Julie PoulainGénomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France.ORCID http://orcid.org/0000-0002-8744-3116
Patrick WinckerGénomique Métabolique, Genoscope, Institut François Jacob, CEA, CNRS, Univ Evry, Université Paris-Saclay, Evry, France.ORCID http://orcid.org/0000-0001-7562-3454
Sophie Arnaud-HaondMARBEC, Institut Français de Recherche pour L'Exploitation de la Mer, Univ Montpellier, CNRS, IRD, Sète, France.ORCID http://orcid.org/0000-0001-5814-8452
Frank WenzhöferAlfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Bremerhaven, Germany.ORCID http://orcid.org/0000-0002-4621-0586
Bo ThamdrupHadal & Nordcee, Department of Biology, University of Southern Denmark, Odense, Denmark.ORCID http://orcid.org/0000-0002-1221-7077

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hadal trench sediments are hotspots of biogeochemical activity in the deep sea, but the biogeochemical and ecological factors that shape benthic hadal microbial communities remain unknown. Here, we sampled ten hadal sites from two trench regions with a vertical resolution of down to 1 cm. We sequenced 16S rRNA gene amplicons using universal and archaea-specific primer sets and compared the results to biogeochemical parameters. Despite bathymetric and depositional heterogeneity we found a high similarity of microbial communities within each of the two trench axes, while composition at the phylum level varied strongly with sediment depth in conjunction with the redox stratification into oxic, nitrogenous, and ferruginous zones. As a result, communities of a given sediment horizon were more similar to each other across a distance of hundreds of kilometers within each trench, than to those of adjacent horizons from the same sites separated only by centimeters. Total organic carbon content statistically only explained a small part of the variation within and between trenches, and did not explain the community differences observed between the hadal and adjacent shallower sites. Anaerobic taxa increased in abundance at the top of the ferruginous zone, seeded by organisms deposited at the sediment surface and surviving burial through the upper redox zones. While an influence of other potential factors such as geographic isolation, hydrostatic pressure, and non-steady state depositional regimes could not be discerned, redox stratification and diagenesis appear to be the main selective forces that structure community composition in hadal sediments.

Indexed as

BacteriaMicrobiotaArchaeaOxidation-ReductionRNA, Ribosomal, 16SRNA, Ribosomal, 16S

Identifiers

PMID34103697
PMCPMC8629969

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.