Water and nutrient fluxes as indicators for the stability of different land use systems on the terra firme near Manaus.

In this study, we present the effects of different fruit and timber tree species in a multistrata agroforestry system in comparison to secondary vegetation and primary forest sites on inorganic and organic P pools of a Ferralsol in the Amazon basin. The S pools were also assessed, but could not be presented here due to the length of this contribution.Annual Report 1998. Edited by Johannes Lehmann and Klaus Kaiser