Evidence map›Paper›PMID 42820737›Full record

ArticleFEMS microbiology ecology2026

Depth-stratified boreal peatland microbiomes reveal recurring community organization and methane-cycling potential.

Tong Liu, Jacob Smeds, Mats Nilsson, Mats Öquist, Stefan Bertilsson

Abstract read
In one paragraph

Article in FEMS microbiology ecology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
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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

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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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

5 authors.

Tong LiuDepartment of Forest Ecology and Management, Swedish University of Agricultural Sciences (SLU), Umeå, 90183, Sweden.ORCID 0000-0002-6456-4767
Jacob SmedsDepartment of Forest Ecology and Management, Swedish University of Agricultural Sciences (SLU), Umeå, 90183, Sweden.
Mats NilssonDepartment of Forest Ecology and Management, Swedish University of Agricultural Sciences (SLU), Umeå, 90183, Sweden.
Mats ÖquistDepartment of Forest Ecology and Management, Swedish University of Agricultural Sciences (SLU), Umeå, 90183, Sweden.
Stefan BertilssonDepartment of Aquatic Sciences and Assessment and Science for Life Laboratory, Swedish University of Agricultural Sciences (SLU), Uppsala, 75007, Sweden.ORCID 0000-0002-4265-1835

Funding

Kempestiftelserna JCK-2016Swedish Research Council 2020-01211Swedish Research Council 2020-01327Swedish Research Council 2020-01436
6 · The paper itself

Abstract

Microbial communities in peatlands vary with depth, but most studies have been limited in spatial extent or replication, constraining assessment of general community patterns. We characterized microbial community structure and metabolic potential across replicated depth profiles in seven boreal peatlands in Sweden. Combining 16S rRNA gene sequencing and shotgun metagenomics, we identified recurring vertical stratification across sites. Microbial richness declined with depth, and core taxa including Rice Cluster II, Terriglobales, Subgroup 2, Roseiarcus, Methylocystis, and Candidatus Solibacter were shared across locations. Functional gene profiles revealed depth-related reorganization of carbon-cycling potential, with hydrolytic and fermentative functions relatively more abundant near the surface and acetogenic and methanogenic pathways more prominent in deeper anoxic horizons. Gene-centric analyses indicated an important contribution of Rice Cluster II-related methanogens to hydrogenotrophic methanogenesis, while co-occurrence networks identified a depth-conserved syntrophic module centered on this lineage. Environmental variables showed depth-specific associations with microbial communities. Despite geographic separation and site-specific variation among peatlands, recurring depth-resolved microbial assemblages and functional profiles were observed, suggesting that common environmental constraints associated with peat development contribute to broad patterns of microbial community organization and carbon-cycling potential.

Indexed as

BacteriaMethaneMicrobiotaSoil MicrobiologyMetagenomeMetagenomicsPhylogenyRNA, Ribosomal, 16SSwedenTaigaWetlandsMethaneRNA, Ribosomal, 16S16S rRNA genemetagenome-assembled genomesmethanogenesismicroorganismspeatlandsvertical stratification

Identifiers

PMID42820737
PMCPMC13643928

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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.