Soil Phosphorus
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 2 benchmarks together — the Point form drives the primary score, while 1 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
For naturally eutrophic systems (e.g., on basalt), the threshold would be defined as any significant enrichment above their already high natural baseline (e.g., >60 mg/kg), as this would still represent an unnatural input that could alter species dynamics.
Available Phosphorus: This measures the fraction of phosphorus that is readily available for plant uptake.
This benchmark represents the upper detrimental threshold of available phosphorus for naturally eutrophic rainforest systems in Australia.
This threshold represents an unnatural input that could alter species dynamics and degrade ecological integrity.
Sources (1)
Tool 2.8: Soil nutrient critical limits (Meat & Livestock Australia 2020)
View SourceSupporting Sources (1)
Additional references from the underlying research that informed this benchmark.
Plant-soil nutrient relationships in the wet tropical rainforests of north Queensland, Australia (Maycock 1998)
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