Acoustic Complexity Index (ACI)
Benchmark Value
Scoring Curve
This curve shows how a field measurement for this indicator would score across all available benchmark forms in this context.
Evidence & Context
"Grassy Woodland: Mean ACI: 133.7 ACI Range: 130.5 – 137.0"
Above-ground Acoustic Complexity Index (ACI) calculated as the mean of the daily 95th percentile values with 95% confidence intervals, capturing peak bird calling activity and biophonic complexity within the eucalypt canopy.
Reference-condition healthy range for Acoustic Complexity Index in grassy woodland ecosystems during spring.
Direct empirical measurements obtained within reference-state grassy dry woodlands in southeastern Australia, providing a reliable, direct benchmark for managing woodland structures in adjacent production zones9.
Sources (1)
A Report on a Community Partnership in Eco-Acoustic Monitoring in Brisbane Ranges
View SourceSupporting Sources (9)
Additional references from the underlying research that informed this benchmark.
Davies et al. (2022)
Davies et al. (2022)
Davies et al. (2022)
Open Ecoacoustics | ARDC - Australian Research Data Commons, accessed July 20, 2025
View Source
Pieretti et al. (2011)
Pieretti et al. (2011)
Roe et al. (2019)
Roe et al. (2019)
Roe et al. (2019)