Soil Electrical Conductivity (EC)

AUS-TGP-CON-SEC General Moderate confidence

Benchmark Value

0.082 dS/m

Direction: Lower is desirable ↓

Form: Point

Scoring Curve

Scoring curve unavailable

The scoring engine could not generate a curve for this benchmark context. The primary form is Point, 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.

Evidence & Context

Therefore, the mean EC value found under tree canopies (0.082 dS/m) is selected as the reference benchmark.

Metric Definition:

Soil Electrical Conductivity (EC) measured as EC of a 1:5 soil:water extract in the topsoil (0-10 cm) under the canopy of mature eucalypts.

Benchmark Definition:

Mean soil EC measured in the topsoil under mature eucalypt canopies in high-quality temperate grassy woodland remnants, representing peak ecosystem function.

Justification:

This value reflects peak ecosystem function (nutrient cycling, organic matter accumulation) and represents the "best-on-offer" condition.

Sources (1)

Preview of Prober, S. M., Lunt, I. D., & Thiele, K. R. (2002). Determining reference conditions for management and restoration of temperate grassy woodlands: relationships among trees, topsoils and understorey flora in little-grazed remnants. Australian Journal of Botany, 50(6), 687–697.

Prober, S. M., Lunt, I. D., & Thiele, K. R. (2002). Determining reference conditions for management and restoration of temperate grassy woodlands: relationships among trees, topsoils and understorey flora in little-grazed remnants. Australian Journal of Botany, 50(6), 687–697. Journal

Prober, S.M., Thiele, K.R. and Lunt, I.D. (2002). Determining reference conditions for management and restoration of temperate grassy woodlands: relationships among trees, topsoils and understorey flora in little-grazed remnants. Australian Journal of Botany, 50(6), 687-697.

View Source

Supporting Sources (9)

Additional references from the underlying research that informed this benchmark.

(PDF) Determining reference conditions for management and ..., accessed August 5, 2025,

Direct Evidence Journal

Effects of Stock Grazing on Biodiversity Values in Temperate Native Grasslands and Grassy Woodlands in SE Australia: A Literature Review - ACT Government

View Source

All About Salinity - Environment and Heritage, accessed August 11, 2025

Contextual Support

All About Salinity - Environment and Heritage, accessed August 11, 2025

View Source

Preview of Australian dryland soils are acidic and nutrient-depleted, and have unique microbial communities compared with other drylands - PMC, accessed August 5, 2025,

Australian dryland soils are acidic and nutrient-depleted, and have unique microbial communities compared with other drylands - PMC, accessed August 5, 2025,

Contextual Support Journal

How should we manage our soils to increase soil carbon?, accessed May 10, 2026

View Source

Graham, R. C., & Wilson, B. R. (2007). The influence of scattered trees on soil properties in temperate pastures. Soil Research, 45(2), 121-131.

Contextual Support Journal

Australian dryland soils are acidic and nutrient-depleted, and have unique microbial communities compared with other drylands - PMC, accessed August 11, 2025

View Source

Natural Temperate Grassland of the Southern Tablelands of NSW and the Australian Capital Territory. - DCCEEW, accessed August 12, 2025,

Contextual Support Government

NVIS Fact sheet MVG 19 Tussock grasslands, accessed August 6, 2025

View Source

Relating apparent electrical conductivity to soil properties across the north-central USA - USDA ARS, accessed August 11, 2025

Contextual Support Journal

Relating apparent electrical conductivity to soil properties across the north-central USA - USDA ARS, accessed August 11, 2025

View Source

Relating apparent electrical conductivity to soil properties across the north-central USA - USDA ARS, accessed August 9, 2025

Degradation Threshold Journal

Salinity - Murray–Darling Basin Authority, accessed August 11, 2025

View Source

Salinity | Land and soil - Environment and Heritage - NSW Government, accessed August 11, 2025

Contextual Support Government

Australia state of the environment 2021: land, accessed July 28, 2025

View Source

Temperate Grasslands - Greening Australia, accessed August 4, 2025

Contextual Support Journal

Plant nutrients in the soil - NSW Department of Primary Industries

View Source

Context

Region Australia
Biome Temperate Grassy Woodlands & Plains
Land Use Conservation / Protected Natural Areas
Assessment Pristine Reference
Vegetation Woodland
Evidence Type ReferenceCondition

Lifecycle

Status Active
Version 1
Effective From 7 Jun 2026

Notes

This benchmark represents the peak of the ecosystem's functional potential in a sustainably managed conservation landscape.

Related Benchmarks

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