Resumo

ACOSTA GUTIERREZ, Zoe Griselda et al. Multivariate analysis to design the restoration of ultramafic plain of Natural Rreserva Maraguán in Camagüey, Cuba. Polibotánica [online]. 2008, n.25, pp.91-100. ISSN 1405-2768.

In the ultramafic plain of the Natural Reservation of Maraguán, in Camagüey, Cuba, various efforts have been carried out since 2005 to increase knowledge of the flora and vegetation of the area to facilitate the elaboration of a rehabilitation strategy, particularly for those areas in which high levels of anth ropogenic disturbance have been identified. With the information obtained from these studies and the aim of reducing its dimensionality, a matrix of variables was built and was processed using principal components analysis (PCA). Five components explained more than 90% of the variation recognized in the area. The variables contributing in the greatest degree to the formation of the most important factor (F1) were mostly those related to the soils of the reservation (plasticity index, maximum and minimum limits of water retention, levels of ecological - landscape modification, moisture of the landscape and depth of soil), whereas in regard to the vegetation, the most important variables were the number of parapophyte s (EVEN) followed by the number of species with structures for water regulation (ESPER). We conclude that the statistical analysis used explains the relationships among the main variables in the ecosystem and that it contributes valuable information that serves as a starting point for the design of ecosystem rehabilitation.

Palavras-chave : statistical multivariate analysis; rehabilitation of ecosystems; ultramafic savannas.

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