Fungal:Bacterial Ratio
Benchmark Value
Scoring Curve
This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context. The scoring engine uses 7 benchmarks together — the OptimalRange form drives the primary score, while 6 guard(s) constrain the result.
Evidence & Context
Based on the literature, an F:B ratio of < 1.0 represents this critical threshold.
Fungal:Bacterial Ratio threshold below which soil ecosystem function is impaired.
This benchmark defines the critical lower threshold of the fungal to bacterial biomass ratio below which soil ecosystem function is impaired in Australian Temperate Grassy Woodlands.
An F:B ratio below 1.0 indicates bacterial dominance, rapid nutrient cycling, and increased susceptibility to degradation.
Sources (1)
Soil microbial community composition under Eucalyptus plantations of different age in subtropical China - ResearchGate, accessed July 23, 2025
View SourceSupporting Sources (2)
Additional references from the underlying research that informed this benchmark.
Different responses of soil fungal and bacterial communities to nitrogen addition in a forest grassland ecotone - Frontiers
View SourceRestoring Australia's temperate grasslands and grassy woodlands | Request PDF - ResearchGate, accessed May 19, 2025,
View Source