Invasive Species Presence

AUS-AMR-LVG-ISP General High confidence

Benchmark Value

No specific value — see range
Direction: Lower 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 UpperThreshold Guard MaximumOnly Guard CompositeFramework Guard CompositeFramework Guard

Evidence & Context

The benchmark of "Absence" is for key threatening invasive species (e.g., Cenchrus ciliaris, feral rabbits, goats, cats) that act as ecosystem transformers or hyper-predators. This is derived from a synthesis of peer-reviewed literature and government reports (CSIRO, TERN) indicating that even low densities of these species cause disproportionate ecological damage, drive biodiversity loss, and degrade land condition.

Metric Definition:

Presence or absence of key threatening invasive species that act as ecosystem transformers or hyper-predators in the Australian arid mountain rangelands under livestock grazing management.

Benchmark Definition:

This benchmark represents the desired condition of having no key threatening invasive species present in the Australian arid mountain rangelands under livestock grazing, to maintain native biodiversity and ecosystem function.

Justification:

Even low densities of key threatening invasive species cause disproportionate ecological damage, drive biodiversity loss, and degrade land condition. The best available condition is absence, supported by peer-reviewed literature and government reports (CSIRO, TERN).

Sources (2)

Preview of Grazing management of Australian native woody regeneration as an effective nature-based climate-change solution - CSIRO Publishing, accessed July 10, 2025,
Grazing management of Australian native woody regeneration as an effective nature-based climate-change solution - CSIRO Publishing, accessed July 10, 2025, Journal

Do regenerative grazing management practices improve vegetation and soil health in grazed rangelands? Preliminary insights from a space for time study in the Great Barrier Reef catchments - CSIRO Research Publications Repository, accessed July 23, 2025

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Preview of Opportunities for Integrated Ecological Analysis across Inland Australia with Standardised Data from Ausplots Rangelands | PLOS One, accessed May 13, 2025,
Opportunities for Integrated Ecological Analysis across Inland Australia with Standardised Data from Ausplots Rangelands | PLOS One, accessed May 13, 2025, Journal

Chapter 9 AUSTRALIAN GRASSLANDS - Food and Agriculture Organization of the United Nations

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Supporting Sources (1)

Additional references from the underlying research that informed this benchmark.

Preview of Australian rangelands and climate change – invasive ... - Ninti One, accessed July 28, 2025
Australian rangelands and climate change – invasive ... - Ninti One, accessed July 28, 2025
Contextual Support

Australian rangelands and climate change – invasive ... - Ninti One, accessed July 28, 2025

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Context

  • Region Australia
  • Biome Arid Mountain Ranges & Uplands
  • Land Use Livestock Grazing & Pasture
  • Assessment Not Stated
  • Evidence Type ReferenceCondition

Lifecycle

  • Status Active
  • Version 1
  • Effective From 6 Jun 2026

Notes

The benchmark is conceptually grounded in State-and-Transition Models (S&TMs) and is empirically verifiable through a clear, repeatable analysis of the TERN AusPlots national dataset. The upper detrimental threshold is not a specific percentage but a transition to a degraded state dominated by invasive species. No beneficial minimum presence exists; any presence is ecologically detrimental. AssessmentContext defaulted to 'Not Stated' because the source document did not state one.