Summary
This field study examined how soil erosion alters soil microbial communities and ecosystem functions at two sites with contrasting soil texture and climate conditions. Eroded plots exhibited substantially lower microbial diversity, fewer taxa, reduced network complexity, and altered community composition characterised by declining dominant phyla (Proteobacteria, Bacteroidetes, Gemmatimonadetes) but increased representation of nitrogen-cycling bacterial families. The observed changes in microbial characteristics were strongly correlated with erosion-induced reductions in soil multifunctionality, suggesting that erosion-driven biodiversity loss has measurable functional consequences for soil ecosystem services.
UK applicability
The findings are potentially relevant to UK arable and grassland systems where soil erosion is an ongoing concern, particularly on sloping terrain and in regions with intensive tillage. However, direct applicability may be limited by differences in climate, soil type, and erosion severity between the study sites and UK conditions; UK-specific field validation would strengthen evidence for policy and practice guidance.
Key measures
Microbial network complexity; microbial taxa richness; microbial community composition (relative abundances by phylum); microbial associations/co-occurrence networks; soil multifunctionality; relative abundances of specific bacterial families involved in nitrogen cycling
Outcomes reported
The study quantified changes in soil microbial community composition, network complexity, and microbial diversity metrics in eroded versus non-eroded soil plots. It measured shifts in relative abundances of dominant bacterial phyla and assessed relationships between microbial characteristics and soil multifunctionality.
Topic tags
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