Hidroquímica na Amazônia Central. II. Flutuações no fluxo de saída de nitrogênio e fósforo em dois ecossistemas na Amazônia ()

Abstract

Waters analyses were done of four "igarapes", on which two of them are dryer a Campina\'s area in the Central Amazonia, third and fourth drying a "terra firme" of forest located along of the BR-174 Road. The study had been done during a whole year, in order to know the lost on a cycle of essencial nutrients by Campina ecosystem, in comparison with a "terra firme". The data permited to verify that there is a curve for each "igarapé", in a anual cycle, and that although the lost can be considerable, N and P are not limitant factors for the Campina ecosystem, because these elements are given by died organic matter (litter), droped on the soil from vegetables.