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 5 benchmarks together — the OptimalRange form drives the primary score, while 4 guard(s) constrain the result.
Contributing Benchmarks
Evidence & Context
An available soil phosphorus level exceeding 20 mg/kg is considered detrimental to the environmental health and overall ecosystem function of a production forest in this biome.
Available soil phosphorus concentration measured by Colwell-P or equivalent method
This benchmark defines the upper detrimental threshold of soil available phosphorus above which ecological degradation and physiological stress occur in production forestry within this biome.
Based on evidence of direct P toxicity in Eucalyptus species and ecosystem degradation with native understorey loss above this level.
Sources (1)
Phosphorus nutrition of phosphorus-sensitive Australian native plants: threats to plant communities in a global biodiversity hotspot - PMC
View SourceSupporting Sources (3)
Additional references from the underlying research that informed this benchmark.
(PDF) Establishment of critical nutrient levels in soil and plant for eucalyptus - ResearchGate
View SourceEstablishment of critical nutrient levels in soil and plant for eucalyptus
View SourcePhosphorus uptake and toxicity are delimited by mycorrhizal symbiosis in P-sensitive Eucalyptus marginata but not in P-tolerant Acacia celastrifolia - PubMed Central
View Source