Soil Moisture

AUS-AIF-FOR-SMO General Moderate confidence

Benchmark Value

No specific value — see range

Direction: Higher is desirable ↑

Form: CompositeFramework

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 MinimumOnly Guard OptimalRange Guard OptimalRange Guard MinimumOnly Guard Point Guard MinimumOnly Guard

Evidence & Context

Prolonged saturation ('Proportion Full' ≈ 1.0) becomes detrimental, especially for drought-stressed trees (after >60-90 days) and seedlings (after >6 weeks), leading to anoxic stress and potential mortality.

Metric Definition:

Duration of soil saturation at 'Proportion Full' ≈ 1.0 indicating soil moisture state

Benchmark Definition:

This benchmark defines an upper detrimental threshold based on the duration of soil saturation causing anoxic stress and potential mortality in drought-stressed trees and seedlings in the Arid Inland Floodplains & Ephemeral River Systems under Production Forestry.

Justification:

The threshold is based on physiological tolerance limits of mature and seedling River Red Gum trees to prolonged flooding.

Sources (1)

Preview of Quantifying water requirements of riparian river red gum (Eucalyptus camaldulensis) in the Murray–Darling Basin, Australia – implications for the management of environmental flows

Quantifying water requirements of riparian river red gum (Eucalyptus camaldulensis) in the Murray–Darling Basin, Australia – implications for the management of environmental flows Journal

Quantifying water requirements of riparian river red gum (Eucalyptus camaldulensis) in the Murray–Darling Basin, Australia – implications for the management of environmental flows

View Source

Supporting Sources (1)

Additional references from the underlying research that informed this benchmark.

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

Contextual Support Journal

Extensive Management Promotes Plant and Microbial Nitrogen Retention in Temperate Grassland | PLOS One - Research journals

View Source

Context

Region Australia
Biome Arid Inland Floodplains & Ephemeral River Systems
Land Use Production Forestry
Assessment Not Stated
Evidence Type DegradationThreshold

Lifecycle

Status Rejected
Version 1
Effective From 7 Jun 2026
Effective To 7 Jun 2026

Notes

This threshold is a durational limit rather than a fixed moisture value, emphasizing the importance of flood duration in management. AssessmentContext defaulted to 'Not Stated' because the source document did not state one. Rejected by operator on 2026-06-07: Not consistent with majority of SMO benchmark measurement methodologies (durational limit, no numeric soil moisture value). Rejected by operator on 2026-06-07: Not consistent with majority of SMO benchmark measurement methodologies (durational limit, no numeric soil moisture value).

Related Benchmarks

Other benchmarks in the AUS-AIF-FOR-SMO family.