Ground Cover - Tree Canopy

AUS-TSR-CON-TCC General High confidence

Benchmark Value

95 %

Direction: Higher 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. The scoring engine uses 9 benchmarks together — the OptimalRange form drives the primary score, while 8 guard(s) constrain the result.

Contributing Benchmarks

OptimalRange Primary Point Guard OptimalRange Guard MinimumOnly Guard MaximumOnly Guard MinimumOnly Guard LowerThreshold Guard MinimumOnly Guard MaximumOnly Guard

Evidence & Context

A TCC of 95% composed significantly of lianas is an indicator of severe degradation and a decline in ecosystem function.

Metric Definition:

Tree Canopy Cover (TCC) percentage above which ecosystem function may be impaired due to invasive species dominance.

Justification:

Based on ecological studies showing liana infestation leads to increased tree mortality and reduced carbon storage.

Sources (2)

Rampaging vines are slowly strangling tropical forests - Science News Explores Journal

Rampaging vines are slowly strangling tropical forests - Science News Explores

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The Ecology of Lianas and Their Role in Forests - e-Publications@Marquette

The Ecology of Lianas and Their Role in Forests - e-Publications@Marquette

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Supporting Sources (4)

Additional references from the underlying research that informed this benchmark.

Approved Conservation Advice for the Lowland tropical rainforest of ...

Regulatory Framework

Approved Conservation Advice for the Lowland tropical rainforest of ...

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BioCondition benchmarks | Environment, land and water ..., accessed August 3, 2025,

Direct Evidence Government

Appendix E TEC Lowland rainforest offset area monitoring report year 1 - Transport and Main Roads

View Source

BioCondition Benchmarks for Regional Ecosystem ... - WordPress.com, accessed August 3, 2025,

Direct Evidence Journal

BioCondition Benchmarks for Regional Ecosystem ... - WordPress.com

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BioCondition: A condition assessment framework for terrestrial ...

Methodology Source Journal

BioCondition: A condition assessment framework for terrestrial ...

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Context

Region Australia
Biome Tropical & Subtropical Rainforests
Land Use Conservation / Protected Natural Areas
Assessment Pristine Reference
Vegetation Forest
Evidence Type DegradationThreshold

Lifecycle

Status Active
Version 1
Effective From 9 Jun 2026

Notes

No simple quantitative upper threshold exists; this value is a qualitative indicator of degradation when dominated by invasive species.

Related Benchmarks

Other benchmarks in the AUS-TSR-CON-TCC family.