ArticleScientific reports2016
Physical soil architectural traits are functionally linked to carbon decomposition and bacterial diversity.
Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Long-Term Organic Amendment Systems Are Associated with Pore-Aggregate Structure, Root Traits, and Labile Organic Carbon Allocation in a Brown Soil.Plants (Basel, Switzerland) · 2026Article
- Mobility and growth in confined spaces are important mechanisms for the establishment ofMicrobiology (Reading, England) · 2024Article
- Mixed planting of subtropical Chinese fir in South China improves microbial carbon source metabolism and functional diversity through the accumulation of nutrients from soil aggregates.Frontiers in microbiology · 2024Article
- Article
- Effects of straw mulching on predatory myxobacterial communities in different soil aggregates under wheat-corn rotation.Environmental science and pollution research international · 2022Article
- Microbial Metal Resistance within Structured Environments Is Inversely Related to Environmental Pore Size.Applied and environmental microbiology · 2021Article
- Salinity and nutrient modulate soil bacterial communities in the coastal wetland of the Yellow River Delta, China.Environmental science and pollution research international · 2021Article
- The impact of carbon addition on the organisation of rhizosheath of chickpea.Scientific reports · 2018Article
- Emergent Properties of Microbial Activity in Heterogeneous Soil Microenvironments: Different Research Approaches Are Slowly Converging, Yet Major Challenges Remain.Frontiers in microbiology · 2018Review
Corrections and comments
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Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Aggregates play a key role in protecting soil organic carbon (SOC) from microbial decomposition. The objectives of this study were to investigate the influence of pore geometry on the organic carbon decomposition rate and bacterial diversity in both macro- (250-2000 μm) and micro-aggregates (53-250 μm) using field samples. Four sites of contrasting land use on Alfisols (i.e. native pasture, crop/pasture rotation, woodland) were investigated. 3D Pore geometry of the micro-aggregates and macro-aggregates were examined by X-ray computed tomography (μCT). The occluded particulate organic carbon (oPOC) of aggregates was measured by size and density fractionation methods. Micro-aggregates had 54% less μCT observed porosity but 64% more oPOC compared with macro-aggregates. In addition, the pore connectivity in micro-aggregates was lower than macro-aggregates. Despite both lower μCT observed porosity and pore connectivity in micro-aggregates, the organic carbon decomposition rate constant (Ksoc) was similar in both aggregate size ranges. Structural equation modelling showed a strong positive relationship of the concentration of oPOC with bacterial diversity in aggregates. We use these findings to propose a conceptual model that illustrates the dynamic links between substrate, bacterial diversity, and pore geometry that suggests a structural explanation for differences in bacterial diversity across aggregate sizes.
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