Basal Area
Benchmark Value
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 18 benchmarks together — the OptimalRange form drives the primary score, while 17 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
An upper detrimental threshold, where woody encroachment severely limits pasture productivity, is identified at approximately 15 m²/ha.
Basal area representing the upper detrimental threshold beyond which ecosystem function is impaired.
The upper detrimental threshold for basal area indicating significant woody encroachment and loss of pasture productivity in arid grazing landscapes.
This value is supported by a simulation study by MacLeod et al. (2010) and represents the point at which management intervention is necessary.
Sources (1)
Reducing the impacts of grazing on water quality - EPA Victoria, accessed July 10, 2025,
View SourceSupporting Sources (1)
Additional references from the underlying research that informed this benchmark.
Does grazing exclusion in Australia's rangelands affect biomass and debris carbon stocks?
View Source