Ecologia e Manejo do Cipó Saracura-mirá (Ampelozizyphus amazonicus Ducke) em um Assentamento Rural no Município de Presidente Figueiredo - AM

Abstract

I studied the environmental variables like visible sky, canopy groundcover, clay percentage, leaf area index and understory structure influences on the density, chemical composition and growth rates of Ampelozizyphus amazonicus Ducke. This species was chosen due to its malarial prevention potentiality. The study was carried out at Cristo Rei do Uatumã Rural Settlement located at Presidente Figueiredo Municipality,Amazonas State, Brazil (2º 02' 54.79'' S e 60º 01' 39.63'' W). It is expected a greater density and higher growth rates of A. Amazonicus in sites with high clay percentage and high visible sky percentage, but this pattern was not observed in the study. It is likely that the succesional stages of the study-sites have influed the results. The understorey populations are under unequal competition for primary resources like water and light. The data founded suggested that this liana has the same behaviour of other lianas in the region, when gaps are openned and environmental conditions are favourable, they will proliferate, becoming the dominant species in the successional forest. It was also observed that the density of this specie should be limited by the unavaibility of hosts. For the chemical composition of the A. Amazonicus, it was not found any variation for both quantity and quality among the analyzed plants. These finds is a positive factor for the species management because the future production will have the same quality and will be easier to calculate the amount to be extracted. The objectives of this study were to find instruments and techniques for sustainable management but to get this, newstudies are needed.