Invasive Species Presence

AUS-TSW-FOR-ISP General Moderate confidence

Benchmark Value

50 %

Thresholds: Lower: —, Upper: 50

Direction: Lower is desirable ↓

Form: UpperThreshold

Scoring Curve

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

Evidence & Context

It permits the clearing of INS where they "comprise at least 50% of the trees and shrubs in an area".

Metric Definition:

Density of Invasive Native Species (INS) expressed as percentage of trees and shrubs in an area.

Benchmark Definition:

The upper detrimental threshold for Invasive Native Species density, beyond which ecological harm occurs in temperate semi-arid shrublands and open woodlands under production forestry.

Justification:

This threshold is actively managed against to prevent dense, monodominant stands that suppress biodiversity and groundcover.

Sources (1)

Land Management (Native Vegetation) Code 2018 - NSW legislation Journal

Land Management (Native Vegetation) Code 2018 - NSW legislation

View Source

Supporting Sources (1)

Additional references from the underlying research that informed this benchmark.

Mallee Bounceback - Environment, accessed July 12, 2025,

Direct Evidence Government

Mallee Bounceback - Weeds and Pests on Public Land program

View Source

Context

Region Australia
Biome Temperate Semi-Arid Shrublands & Open Woodlands
Land Use Production Forestry
Assessment Rehabilitation Target
Evidence Type DegradationThreshold

Lifecycle

Status Active
Version 1
Effective From 21 Mar 2026

Notes

This threshold is codified in NSW Land Management codes as a trigger for clearing invasive native scrub to restore ecological balance.

Related Benchmarks

Other benchmarks in the AUS-TSW-FOR-ISP family.