Fazenda Vitoria

Table 6.1 Comparison of C inputs to soils at Fazenda Vitoria, Paragominas, Brazil.

Table 6.7 Mineralization indices and N trace gas emissions for soils from primary forest, secondary forest, reformed pasture, and degraded pasture at Fazenda Vitoria. ...

Little direct evidence of deep root uptake of nutrients is available in the Amazon or elsewhere. Within our eastern Amazonian research site at the Fazenda Vitoria in Paragominas, Para, however, we have made measurements of soil and vegetation that help us bound estimates of the potential for deep root uptake of nutrients by secondary forests. Specifically, we have (1) estimated... 

Table 9.1 Total nutrient stocks in mature and secondary forest aboveground biomass and in the upper 20 cm (meant 1 SD)of Oxisol (Haplustox) soils within the Fazenda Vitoria, Paragominas, Brazil.

Are secondary forests able to recover root systems that are more than ten meters deep Water balance measurements from two studies conducted in Amazonia suggest that the answer to this question is yes. After 15-18 years of development, the secondary forest at the Fazenda Vitoria evapotran-spired at a rate virtually identical to that of a neighboring mature forest during a 4-year study period Qipp et al. 1998). This study. 

Quartz, var. Morion (Fazenda Recruta Vitoria da Conquista, Bahia, Brazil)... 

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