Fig. 5. Relationships between soil organic C, potential C mineralization (as CO2–C released), fine root lignin, and fine-root Al in experimental plantations at La Selva Biological Station, Costa Rica. Symbols: • = Hyeronima alchorneoides, 
= Pentaclethra macroloba, 
= Pinus patula, 
= Virola koschnyi, and 
= Vochysia guatemalensis.