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 17 benchmarks together — the OptimalRange form drives the primary score, while 16 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
A loss of 25-40% of this value (below ~21-26 m²/ha) likely indicates a critical threshold for biodiversity loss.
Basal area threshold below which critical biodiversity loss and ecosystem functional impairment occur
A basal area threshold below which rapid biodiversity loss and ecosystem functional impairment begin in tropical & subtropical maritime island forests under conservation management.
Based on evidence of non-linear collapse in key biodiversity and functional indicators when basal area falls below 25-40% of the benchmark.
Sources (1)
(PDF) Thresholds of biodiversity and ecosystem function in a forest ...
View SourceSupporting Sources (2)
Additional references from the underlying research that informed this benchmark.
Managing drought-sensitive forests under global change. Low competition enhances long-term growth and water uptake in Abies pinsapo | Request PDF - ResearchGate
View Source
Vegetation and floristics of a lowland tropical rainforest in northeast Australia - Biodiversity Data Journal
View Source