Invasive Species Presence

AUS-TMS-IND-ISP General High 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.

Evidence & Context

Reference Value: Absence of Class A declared weeds; Active and effective containment and control of Class B declared weeds and other high-impact invasive species, with no new introductions or spread from the site, verified through a documented management system.

Metric Definition:

Invasive Species Presence as defined by absence of Class A declared weeds and active containment/control of Class B declared weeds and other high-impact invasive species, verified through a documented management system.

Benchmark Definition:

This benchmark represents the highest achievable environmental health standard for invasive species presence in Tropical Monsoonal Savannas under industrial land use, defined by absence of Class A weeds and effective control of Class B and other high-impact invasive species through documented management.

Justification:

This management-based benchmark is the most scientifically defensible and practical approach given the dynamic, high-disturbance nature of industrial landscapes and the lack of consistent quantitative data.

Sources (3)

Preview of NT Weeds Management Act 2001
NT Weeds Management Act 2001 Journal

NT Weeds Management Act 2001 6

View Source
Preview of Ranger Mine Closure Plan
Ranger Mine Closure Plan Government

Synthesis of the NT Weeds Management Act 2001, best-practice guidelines for corridor maintenance (NT.GOV.AU), and stated objectives from major project Environmental Management Plans (e.g., Ranger Mine Closure Plan, Carmichael Mine EMP).

View Source
Preview of Ranger Mine Management Plan PLN005
Ranger Mine Management Plan PLN005 Journal

Ranger Mine Management Plan PLN005

View Source

Supporting Sources (1)

Additional references from the underlying research that informed this benchmark.

Preview of Gamba Grass Management Guide - Northern Territory Government
Gamba Grass Management Guide - Northern Territory Government
Contextual Support GreyLiterature

Gamba Grass Management Guide - Northern Territory Government

View Source

Context

  • Region Australia
  • Biome Tropical Monsoonal Savannas
  • Land Use Industrial & Infrastructure Use
  • Assessment Pristine Reference
  • Evidence Type ReferenceCondition

Lifecycle

  • Status Active
  • Version 1
  • Effective From 21 Mar 2026

Notes

This benchmark reflects a management-based state rather than a quantitative metric, as no such metric is consistently available or ecologically appropriate for high-disturbance industrial landscapes. The lower critical threshold is failure to comply with the NT Weeds Management Act 2001, defined by presence of any Class A weed or unmanaged spread of any Class B weed. The upper detrimental threshold is any presence of high-impact invasive species, as more is always worse.