Evidence map›Paper›PMID 31598689›Full record

ArticleFEMS microbiology ecology2019

Selection imposed by local environmental conditions drives differences in microbial community composition across geographically distinct groundwater aquifers.

Lucas Fillinger, Katrin Hug, Christian Griebler

Abstract read
In one paragraph

Article in FEMS microbiology ecology, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

  1. Microbial ecology of shallow groundwater ecosystems.Nature reviews. Microbiology · 2026
    Review
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  5. Frontiers in microbiology · 2025
    Article
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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

3 authors.

Lucas FillingerHelmholtz Zentrum München, Institute of Groundwater Ecology, Ingolstädter Landstrasse 1, Neuherberg 85764, Germany.
Katrin HugHelmholtz Zentrum München, Institute of Groundwater Ecology, Ingolstädter Landstrasse 1, Neuherberg 85764, Germany.
Christian GrieblerHelmholtz Zentrum München, Institute of Groundwater Ecology, Ingolstädter Landstrasse 1, Neuherberg 85764, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Several studies have analyzed biogeographic distribution patterns of microbial communities across broad spatial scales. However, it is often unclear to what extent differences in community composition across different regions are caused by dispersal limitation or selection, and if selection is caused by local environmental conditions alone or additional broad-scale region-specific factors. This is especially true for groundwater environments, which have been understudied in this context relative to other non-subsurface habitats. Here, we analyzed microbial community composition based on exact 16S rRNA amplicon sequence variants (ASVs) from four geographically separated aquifers located in different regions along a latitudinal transect of ∼700 km across Germany. Using a combination of variation partitioning and ecological null models revealed that differences in microbial community composition were mainly the product of selection imposed by local environmental conditions and to a smaller but still significant extent dispersal limitation and drift across regions. Only ∼23% of the total variation in microbial community composition remained unexplained, possibly due to underestimated effects of dispersal limitation among local communities within regions and temporal drift. No evidence was found for selection due to region-specific factors independent of local environmental conditions.

Indexed as

MicrobiotaEnvironmentGermanyGroundwaterPhylogeographyRNA, Ribosomal, 16SWater MicrobiologyRNA, Ribosomal, 16Samplicon sequence variantsbiogeographycommunity assemblydispersalmetacommunityspecies sorting

Identifiers

PMID31598689
PMCPMC6821248

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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.