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Arvores prestadoras de serviços ecológicos na Amazônia Brasileira

Author(s): Patrícia Chaves de Oliveira | Cláudio José Reis de Carvalho

Journal: Universitas Scientiarum
ISSN 0122-7483

Volume: 15;
Issue: 3;
Start page: 265;
Date: 2010;
Original page

Keywords: ecological service | aluminium | forest

Trees of ecological services in the Brazilian Amazon. The metabolism of rhizospheres of plants that accumulate phosphorus (P) as Neeamacrophylla and Cecropia palmata can exert certain influence on soil dynamics as a tolerance against environmental stresses, mostly inrelation to phosphorus (P), aluminum (Al) and organic matter (MO) concentrations. The objective of this work was to characterize theprofiles of the rhizospheres of selected species and to determine wood, leaf and total biomass as an alternative to the increment of the carbonproduced. Materials and methods. We selected individual trees in two secondary forests (capoeiras), one enriched and another one onlywith natural vegetation in the Igarapé-Açú City, state of Pará, for measuring the concentrations of phosphorus (P), aluminium (Al) andorganic matter (MO). Results. Soil adjacent to the rhizosphere of Neea showed higher concentrations of phosphorus and organic matterthan Cecropia, however low concentrations of aluminium had been observed in soil under the influence of Cecropia. Conclusions. Trendsof a reduction on phosphorus and organic matter concentrations in a potential scale with the increase of aluminium concentrations had beenobserved in all the rhizospheres. Leaf biomass did not differ between species, while wood biomass did differ between species.
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