Basal Area — Benchmark Detail

Benchmark Value

No specific value — see range

Range: 30 to 40 m²/ha

Optimal Range: 30 to 40

Direction: Higher is desirable ↑

Form: OptimalRange

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 17 benchmarks together — the OptimalRange form drives the primary score, while 16 guard(s) constrain the result.

Contributing Benchmarks

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

Evidence & Context

An optimal range is likely 30-40 m²/ha.

Metric Definition:

Basal area range representing optimal ecosystem function and resilience

Benchmark Definition:

An optimal basal area range balancing structural complexity, carbon storage, and resilience in tropical & subtropical maritime island forests under conservation management.

Justification:

Supported by empirical benchmark from the Daintree Rainforest Observatory and theoretical convergence point for mature tropical forests.

Sources (1)

Vegetation and floristics of a lowland tropical rainforest in northeast Australia - Biodiversity Data Journal Journal

Vegetation and floristics of a lowland tropical rainforest in northeast Australia - Biodiversity Data Journal

View Source

Supporting Sources (2)

Additional references from the underlying research that informed this benchmark.

(PDF) Thresholds of biodiversity and ecosystem function in a forest ...

Contextual Support GreyLiterature

(PDF) Thresholds of biodiversity and ecosystem function in a forest ...

View Source

Preview of Managing drought-sensitive forests under global change. Low competition enhances long-term growth and water uptake in Abies pinsapo | Request PDF - ResearchGate

Managing drought-sensitive forests under global change. Low competition enhances long-term growth and water uptake in Abies pinsapo | Request PDF - ResearchGate

Contextual Support Journal

Managing drought-sensitive forests under global change. Low competition enhances long-term growth and water uptake in Abies pinsapo | Request PDF - ResearchGate

View Source

Context

Region Australia
Biome Tropical & Subtropical Maritime Islands
Land Use Conservation / Protected Natural Areas
Assessment Conservation Target
Vegetation Forest
Evidence Type HealthyOperationalRange

Lifecycle

Status Active
Version 1
Effective From 7 Jun 2026

Notes

This range balances high structural complexity, significant carbon storage, and robust habitat provisioning with resilience.

Related Benchmarks

Other benchmarks in the AUS-TMI-CON-BAS family.