Litter Cover

AUS-TMS-URB-LIT General Moderate confidence

Benchmark Value

50 %

Thresholds: Lower: 50, Upper: —

Direction: Higher is desirable ↑

Form: MinimumOnly

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 11 benchmarks together — the OptimalRange form drives the primary score, while 10 guard(s) constrain the result.

Contributing Benchmarks

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

Evidence & Context

Lower Critical Threshold: <50% cover, indicating significant bare ground and ecosystem dysfunction.

Metric Definition:

Lower Critical Threshold for Litter Cover (%) indicating ecosystem dysfunction.

Benchmark Definition:

This benchmark defines the lower critical threshold for litter cover in urban and developed areas of Australia's Tropical Monsoonal Savannas, below which significant bare ground and ecosystem dysfunction occur.

Justification:

A ground cover of <50% is proposed as the Lower Critical Threshold because it indicates significant bare soil and a dysfunctional state prone to erosion and resource loss.

Sources (1)

Northern Savannas - Greening Australia GreyLiterature

Northern Savannas - Greening Australia

View Source

Supporting Sources (4)

Additional references from the underlying research that informed this benchmark.

Creating Habitat for Darwin Gardens

Direct Evidence Journal

Creating Habitat for Darwin Gardens

View Source

Discover the Benefits of Mulching and Soil Amendment - Green Haven Cairns Landscaping

Contextual Support GreyLiterature

Discover the Benefits of Mulching and Soil Amendment - Green Haven Cairns Landscaping

View Source

The Good, The Bad And The Ugly Of Mulch - Ozbreed

Contextual Support GreyLiterature

Over-Mulching: Why you shouldn't do it - AC Plant & Turf

View Source

Tropical Mulching Guides (Cairns/Caboolture)

Irrelevant

Tropical Mulching Guides (Cairns/Caboolture)

View Source

Context

Region Australia
Biome Tropical Monsoonal Savannas
Land Use Urban & Developed Use
Assessment Pristine Reference
Evidence Type DegradationThreshold

Lifecycle

Status Active
Version 2
Effective From 21 Mar 2026

Notes

Below this value, the landscape is considered to be in a state of significant ecological dysfunction, failing to adequately protect the soil, retain moisture, cycle nutrients, and support biodiversity. ConsistencyResolver applied 2026-03-23 00:15 UTC: UpperThreshold 50 → (check: MaxBelowPointValue, rationale: Clearing the UpperThreshold field after moving the value to LowerThreshold to reflect the correct threshold direction and form.) ConsistencyResolver applied 2026-03-23 00:15 UTC: LowerThreshold → 50 (check: MaxBelowPointValue, rationale: The Notes state 'Below this value, the landscape is considered to be in a state of significant ecological dysfunction,' indicating this is a lower threshold. Moving the value 50 from UpperThreshold to LowerThreshold will auto-correct the form from MaximumOnly to MinimumOnly, resolving the contradiction.) [Auto-corrected BenchmarkForm: MaximumOnly → MinimumOnly]

Related Benchmarks

Other benchmarks in the AUS-TMS-URB-LIT family.