Pulse Brain · Growing Health Evidence Index
Tier 3 — Observational / field trialPeer-reviewed

Biochar affects community composition of nitrous oxide reducers in a field experiment

Hans-Martin Krause, Roman Hüppi, Jens Leifeld, Mohamed El-Hadidi, Johannes Harter, Andreas Kappler, Martin Hartmann, Sebastian Behrens, Paul Mäder, Andreas Gattinger

Soil Biology and Biochemistry · 2018

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Summary

This field experiment investigated how biochar soil amendment influences the community structure of nitrous oxide-reducing bacteria in agricultural soil using molecular microbial ecology techniques. The work contributes evidence on how carbon-based soil amendments affect functional microbial communities involved in denitrification and greenhouse gas mitigation. As suggested by the author group's expertise and the scope of Soil Biology and Biochemistry, the findings are likely relevant to understanding mechanisms by which biochar may influence soil microbial function and N₂O emissions in farming systems.

UK applicability

The findings may be applicable to UK arable and mixed farming systems where biochar amendments are being evaluated as a climate mitigation strategy. However, the study was conducted under Swiss conditions; local trials on UK soil types and climates would be needed to establish robustness of the biochar-microbial community effects in British agricultural contexts.

Key measures

Community composition of nitrous oxide reducers (as inferred from molecular microbial ecology methods); N₂O reducer diversity and abundance following biochar amendment

Outcomes reported

The study characterised changes in the community composition and diversity of nitrous oxide-reducing bacteria in response to biochar addition in field conditions. Molecular microbial profiling was employed to assess functional microbial populations relevant to N₂O emissions.

Theme
Climate & resilience
Subject
Soil biology & microbiology
Study type
Research
Study design
Field trial
Source type
Peer-reviewed study
Status
Published
Geography
Switzerland
System type
Mixed farming
DOI
10.1016/j.soilbio.2018.01.018
Catalogue ID
BFmowc29uu-yq4qvf

Topic tags

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