Figure legends
Fig. 1 Leaf mass-based total P (A), and N concentrations (B), and area-based P (C) and N(D) concentrations of Banksia attenuata and B. sessilis grown in three substrates. Values are means ± SE (n = 10); asterisks show significant differences between the two species byt test. ns not significant,** P < 0.01, *** P < 0.001. Different letters represent significant differences among substrates (P < 0.05). SLAT: sand plus laterite, SLIM: sand plus limestone.
Fig. 2 The lipid phosphorus (P) (A) , metabolite P (B ), nucleic acid P (C), residual P (D) and inorganic P (Pi) concentrations (E) in leaves of Banksia attenuata and B. sessilis grown in three substrates. Values are means ± SE (n = 10); asterisks show significant differences between the two species by t test. ns not significant, * P< 0.05, ** P < 0.01, *** P < 0.001. Different letters represent significant differences for the two species among substrates (P < 0.05). SLAT: sand plus laterite, SLIM: sand plus limestone
Fig. 3 The proportions of total foliar phosphorus (P) as lipid P (A) , metabolite P (B ), nucleic acid P (C),residual P (D) and inorganic P (Pi) (E) forBanksia attenuata and B. sessilis grown in three substrates. Values are means ± SE (n = 10); asterisks show significant differences between the two species by t test. ns means not significant, * P < 0.05, ** P< 0.01, *** P < 0.001. Different letters represent significant differences for the two species among substrate types ( P < 0.05). SLAT: sand plus laterite, SLIM: sand plus limestone
Fig. 4 Relationships of relative growth rate (RGR) to foliar nucleic acid phosphorus (P), foliar nitrogen (N), and foliar N to nucleic acid P for Banksia attenuata and B. sessilis . Values are means ± SE (n = 10). Individual data can be found in Figures 1 and 2, and Table 1.
Fig. 5 Relationships between foliar phosphorus (P) fractions and total foliar P concentration (left), and leaf mass per area (LMA) (right) for Banksia attenuata and B. sessilis grown in three substrates (n = 30). Each symbol represents an individual plant. BA: B. attenuata , BS: B. sessilis , SLAT: sand plus laterite, SLIM: sand plus limestone
Fig. 6 Diagrams summarising foliar traits affecting relative growth rates for the resprouter Banksia attenuata (a) and the seeder Banksia sessilis (b). Solid lines indicate connections between factors; dashed arrows indicate factors that affect another factor; red dashed arrow indicates that the factor affects the relative growth rate. P: phosphorus, LMA: leaf mass per area, PPUE: photosynthetic P-use efficiency
Table 1 . Mass ratios for total foliar nitrogen (N) to total foliar phosphorus (P) and to P in each foliar P-containing fraction, and relative growth rate (RGR) for Banksia attenuata and B. sessilis in three substrates. Values are means ± SE (n = 10); asterisks show significant differences between the two species byt test. ** P < 0.01,*** P < 0.001. Different letters represent significant differences for the two species among the substrates (P < 0.05). SLAT: sand plus laterite, SLIM: sand plus limestone.