Invasive Species Presence

AUS-TGP-AGR-ISP General Moderate confidence

Benchmark Value

30 %

Direction: Lower is desirable ↓

Form: MaximumOnly

Scoring Curve

This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context.

Evidence & Context

An invasive species cover of greater than 30% in the ground layer is proposed as a robust upper detrimental threshold.

Metric Definition:

Percentage cover of invasive species in the ground layer

Benchmark Definition:

This benchmark marks the ecological tipping point where invasive species cover causes sharp declines in native biodiversity and ecosystem function in temperate grassy woodlands.

Justification:

Supported by conservation science studies showing sharp declines in native species richness and diversity beyond this cover level.

Sources (1)

Preview of Regenerative agriculture in Australia: the changing face of farming - Frontiers, accessed August 4, 2025

Regenerative agriculture in Australia: the changing face of farming - Frontiers, accessed August 4, 2025 Journal

Regenerative agriculture is key to dry season preparation - Soils For Life, accessed July 23, 2025

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Supporting Sources (2)

Additional references from the underlying research that informed this benchmark.

Preview of Interactions between crop sequences, weed populations and herbicide use in Western Australian broadacre farms: findings of a six-year survey - CSIRO Publishing

Interactions between crop sequences, weed populations and herbicide use in Western Australian broadacre farms: findings of a six-year survey - CSIRO Publishing

Contextual Support Journal

Interactions between crop sequences, weed populations and herbicide use in Western Australian broadacre farms: findings of a six-year survey - CSIRO Publishing

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Reducing Risk, Securing the Future NSW Invasive Species Management Review Preliminary Report August 2024

Contextual Support GreyLiterature

Reducing Risk, Securing the Future NSW Invasive Species Management Review Preliminary Report August 2024

View Source

Context

Region Australia
Biome Temperate Grassy Woodlands & Plains
Land Use Agricultural Crop Production
Assessment Not Stated
Evidence Type DegradationThreshold

Lifecycle

Status Active
Version 1
Effective From 6 Jun 2026

Notes

Represents a tipping point for native biodiversity loss and significant ecosystem degradation. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.

Related Benchmarks

Other benchmarks in the AUS-TGP-AGR-ISP family.