Gary D. Paoli, Lisa M. Curran, and Donald R. Zak. 2005. Phosphorus efficiency of Bornean rain forest productivity: evidence against the unimodal efficiency hypothesis. Ecology 86:1548–1561.

Appendix A. A figure showing the phosphorus content of wood in lowland rain forest at Gunung Palung National Park, Indonesia.

FIG. A1. The P concentration (%) of wood in relation to the extractable soil P content (Olsen method) of surface soils (0–20 cm) derived from three different parent materials: alluvium, sedimentary, and granite. Soil P content is the average among multiple 0.07-ha plots (alluvium = 10, sedimentary = 8, granite = 12). Wood P concentration is the average among multiple trees sampled in each habitat (alluvium = 13, sedimentary = 5, granite = 12). Errors indicate one standard deviation along each axis.