Evidence map›Paper›PMID 25395291›Full record

ArticleMicrobial ecology2015

Soil pH determines microbial diversity and composition in the park grass experiment.

Kateryna Zhalnina, Raquel Dias, Patricia Dörr de Quadros, Austin Davis-Richardson, Flavio A O Camargo, Ian M Clark, Steve P McGrath, Penny R Hirsch, Eric W Triplett

Abstract read
PubMed Publisher
In one paragraph

Article in Microbial ecology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 162 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
162citing papers in PubMed, 1 pooled it
–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

162 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Toward systems agroecology: Risk-reward balance, emergent plant communities, and temporal weather map in multiplant farming.Proceedings of the National Academy of Sciences of the United States of America · 2026
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  18. Four Decades ofMicroorganisms · 2025
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102 more citing papers are in PubMed but not listed here.

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

9 authors.

Kateryna ZhalninaDepartment of Microbiology and Cell Science, Institute of Food and Agricultural Sciences, University of Florida, 1052 Museum Road, 32611-0700, Gainesville, FL, USA, kzhalnina@lbl.gov.
Raquel Dias
Patricia Dörr de Quadros
Austin Davis-Richardson
Flavio A O Camargo
Ian M Clark
Steve P McGrath
Penny R Hirsch
Eric W Triplett

Funding

Biotechnology and Biological Sciences Research Council BBS/E/C/00004962Biotechnology and Biological Sciences Research Council BBS/E/C/00004980Biotechnology and Biological Sciences Research Council BBS/E/C/00006004
6 · The paper itself

Abstract

The Park Grass experiment (PGE) in the UK has been ongoing since 1856. Its purpose is to study the response of biological communities to the long-term treatments and associated changes in soil parameters, particularly soil pH. In this study, soil samples were collected across pH gradient (pH 3.6-7) and a range of fertilizers (nitrogen as ammonium sulfate, nitrogen as sodium nitrate, phosphorous) to evaluate the effects nutrients have on soil parameters and microbial community structure. Illumina 16S ribosomal RNA (rRNA) amplicon sequencing was used to determine the relative abundances and diversity of bacterial and archaeal taxa. Relationships between treatments, measured soil parameters, and microbial communities were evaluated. Clostridium, Bacteroides, Bradyrhizobium, Mycobacterium, Ruminococcus, Paenibacillus, and Rhodoplanes were the most abundant genera found at the PGE. The main soil parameter that determined microbial composition, diversity, and biomass in the PGE soil was pH. The most probable mechanism of the pH impact on microbial community may include mediation of nutrient availability in the soil. Addition of nitrogen to the PGE plots as ammonium sulfate decreases soil pH through increased nitrification, which causes buildup of soil carbon, and hence increases C/N ratio. Plant species richness and plant productivity did not reveal significant relationships with microbial diversity; however, plant species richness was positively correlated with soil microbial biomass. Plants responded to the nitrogen treatments with an increase in productivity and a decrease in the species richness.

Indexed as

Soil MicrobiologyAmmonium SulfateArchaeaBacteriaBiodiversityBiomassCarbonFertilizersHydrogen-Ion ConcentrationNitratesNitrificationNitrogenPhosphorusPoaceaeRNA, Ribosomal, 16SSequence Analysis, DNAAmmonium SulfateCarbonFertilizersNitratesNitrogenPhosphorusRNA, Ribosomal, 16Ssodium nitrateSoil

Identifiers

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.