Microbial diversity and soil functions

Summary

This review examines the central challenge of understanding relationships between soil microbial genetic diversity, community structure, and soil functions. The authors note that whilst assays measuring overall metabolic processes and specific enzyme activities are available, they do not identify which microbial species are responsible for measured processes. The paper argues that soil exhibits functional redundancy—reduction in microbial species groups typically has little effect on overall soil processes because other microorganisms compensate—and that determination of microbial community composition alone is insufficient for quantifying nutrient transformations; a holistic approach measuring pools and fluxes is more efficient.

Regional applicability

The concepts and methodological discussions are applicable to United Kingdom soil science and agricultural research, though the paper is European-focused. UK soil microbiology and agricultural sustainability programmes would benefit from the emphasis on functional redundancy and the recommendation for systems-level approaches to nutrient quantification over species-level characterisation alone.

Key measures

Microbial community composition, enzyme activities (urease, protease, phosphomonoesterase), soil respiration, microbial biomass C/N/P/S, nutrient fluxes and transformations

Outcomes reported

The paper reviews the relationship between soil microbial diversity, community structure, and soil functions, particularly nutrient transformations and organic matter decomposition. It discusses methodological approaches to characterizing microbial communities and quantifying nutrient dynamics in soil.

Topic tags