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Leaf phosphorus content per leaf area

Formal name:  leaf phosphorus content per leaf area
Local identifier:  TOP482
Synonym Term:  leaf P content per area
Related Term:  leaf P content
Related Term:  leaf P concentration
Definition:  The ratio of the quantity (SEP:quantity) of phosphorus (CHEBI:phosphorus atom) in the leaf (PO:leaf) or component thereof, i.e. leaf lamina or leaflet (PO:leaf lamina, PO:leaflet) per respective area (TOP:leaf area, TOP:leaf lamina area, TOP:leaflet area)
Formal Unit:  mass unit / area unit or amount unit / area unit

Comment:  The quantity of phosphorus can be expressed either as a mass (with mass unit, e.g. gram) or as an amount (with amount unit, e.g. mol). The term concentration is polysemic and we suggest to not use it in this context.
Reference:  Eric Garnier, Jens Kattge, Stefan Klotz, Ingolf Kühn, Ulrike Stahl