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By: Pereira, R. C. - Pinheiro, M. D. - Teixeira, Valéria Laneuville - Gama, Bernardo Antonio Perez daType: ArticleIn: Instituto Internacional de EcologiaVolume:Series:Issue:Date: 2002-02-01Page Range:Publication Info: Instituto Internacional de Ecologia 2002-02-01Subjects: