02118nam a2200253 a 450000100080000000500110000800800410001910000190006024501070007926000980018630000120028452013610029665000290165765000160168665300130170265300110171565300150172665300160174165300110175765300270176865300250179570000260182070000180184616672602019-01-22       1995    bl uuuu     u00u1 u    #d1 aPREISINGER, H.  aFunctional traits of the spontaneous vegetation on an agricultural area near Manaus, Amazonas, Brazil.  aIn: SHIFT WORKSHOP, 2., 1995, Cuiaba. Summaries of lectures and posters... Cuiaba: UFMTc1995  ap. 155.  aIndícios funcionais da vegetação espontânea numa área experimental próxima a Manaus-AM: In a recultivation experiment, different crop combinations and hance different types of management of the spontaneous vegetation are being tested. On the one hand, wild vegetation can constitute competition for the crops, on the other it can be an important nutrient store. Whether these opposed processes can be optimized in favour of the crops and of sustainable land use, is a question to be answered in the long term. Four months after clearing the area and six months after installing the experiment, vegetation surveys were carried out in the cultivated area, which focused on the growth-form structure and floristic composition of the spontaneous vegetation. Gradients were analysed by a multivariate ordination technique (CCA), due to the previous use of the area (past disturbance patterns) and soil characteristics (nutrients). The results show vegetation patterns formed mainly by diferences in the extent of past disturbance. Many of the 300 species found in the area show a characteristic response to this factor. Based on observations in the field and results of vegetation analysis, a classification of frequently occurring plant species by strategy types and a preliminary concept of successional processes in the sites under study are presented.  aFloresta Tropical Úmida  aVegetação  aAmazonas  aBrasil  aCompeticao  aCompetition  aManaus  aSpontaneous vegetation  aTropical rain forest1 aSIQUEIRA, S. G. do M.1 aCOELHO, L. F.