Soil Electrical Conductivity (EC)

AUS-AKW-CON-SEC General Moderate confidence

Benchmark Value

0.4 dS/m
Direction: Lower is desirable ↓
Form: MinimumOnly

Scoring Curve

Scoring curve unavailable

The scoring engine could not generate a curve for this benchmark context. The primary form is CompositeFramework, but the benchmark data may be missing required fields (e.g., optimal range bounds for an OptimalRange benchmark). This is typically a data quality issue in the benchmark pipeline.

Contributing Benchmarks

CompositeFramework Primary Point Guard OptimalRange Guard OptimalRange Guard OptimalRange Guard MaximumOnly Guard Point Guard OptimalRange Guard MaximumOnly Guard Point Guard OptimalRange Guard MinimumOnly Guard MaximumOnly Guard OptimalRange Guard MaximumOnly Guard

Evidence & Context

Lower Critical Threshold: An EC value below 0.4 dS/m is identified as a potential critical lower limit.

Metric Definition:

Soil Electrical Conductivity (EC) measured as 1:5 soil-to-water extract in the topsoil (0-30 cm)

Benchmark Definition:

Critical lower limit of soil electrical conductivity below which ecosystem function may decline due to insufficient soluble mineral salts in the Arid Karstic Woodlands & Shrublands biome.

Justification:

Values below 0.4 dS/m are considered marginally or non-saline and may not support the keystone halophytic flora in this nutrient-poor system.

Supporting Sources (1)

Additional references from the underlying research that informed this benchmark.

Preview of TERN AusPlots, Ecosystem Surveillance Monitoring, Australia
TERN AusPlots, Ecosystem Surveillance Monitoring, Australia
Direct Evidence

TERN AusPlots, Ecosystem Surveillance Monitoring, Australia

View Source

Context

  • Region Australia
  • Biome Arid Karstic Woodlands & Shrublands
  • Land Use Conservation / Protected Natural Areas
  • Assessment Pristine Reference
  • Vegetation Shrubland
  • Evidence Type DegradationThreshold

Lifecycle

  • Status Active
  • Version 1
  • Effective From 7 Jun 2026

Notes

Extremely low EC may indicate nutrient limitations and risk a shift to a less resilient ecosystem state.

Related Benchmarks

Other benchmarks in the AUS-AKW-CON-SEC family.

15.2 dS/m Moderate
Conservation / Protected Natural Areas · Pristine Reference · Shrubland
Point Active v1
— dS/m Moderate
Conservation / Protected Natural Areas · Pristine Reference · Shrubland
OptimalRange Active v1
25 dS/m Moderate
Conservation / Protected Natural Areas · Pristine Reference · Shrubland
MaximumOnly Active v1