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Acta Amazonica

Print version ISSN 0044-5967On-line version ISSN 1809-4392

Abstract

RIBEIRO, J. S. Boabaid; BRINGEL, S. R. B.  and  SANTOS, A.. Hidroquímica na Amazônia Central. II. Flutuações no fluxo de saída de nitrogênio e fósforo em dois ecossistemas na Amazônia (). Acta Amaz. [online]. 1978, vol.8, n.3, pp.409-416. ISSN 0044-5967.  http://dx.doi.org/10.1590/1809-43921978083409.

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.

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