Revista: | Anais da Academia Brasileira de Ciencias |
Base de datos: | PERIÓDICA |
Número de sistema: | 000409062 |
ISSN: | 0001-3765 |
Autors: | Mendonca, Bruno A.F. de1 Fernandes-Filho, Elpidio I2 Schaefer, Carlos E.G.R2 Mendonca, Julia G.F. de3 Vasconcelos, Bruno N.F2 |
Institucions: | 1Universidade Federal Rural do Rio de Janeiro, Instituto de Florestas, Seropedica, Rio de Janeiro. Brasil 2Universidade Federal de Vicosa, Departamento de Solos, Vicosa, Minas Gerais. Brasil 3Universidade Federal de Juiz de Fora, Instituto de Ciencias Biologicas, Juiz de Fora, Minas Gerais. Brasil |
Any: | 2017 |
Període: | Jun |
Volum: | 89 |
Número: | 2 |
Paginació: | 1269-1294 |
País: | Brasil |
Idioma: | Inglés |
Tipo de documento: | Artículo |
Enfoque: | Experimental, aplicado |
Resumen en inglés | Viruá National Park encompasses a vast and complex system of hydromorphic sandy soils covered largely by the white sand vegetation ("Campinarana") ecosystem. The purpose of this study was to investigate a vegetation gradient of "terra-firme"-white sand vegetation at the Viruá National Park. Nine plots representing three physiognomic units were installed for floristic and phytosociological surveys as well as to collect composite soil samples. The data were subjected to assessments of floristic diversity and similarity, phytosociological parameters and to statistical analyses, focused on principal components (PC) and canonical correspondence analysis (CCA). The vegetation of the Campinaranas types and Forest differed in biomass and species density. Ten species, endemic to Brazil, were particularly well-represented. PC and CCA indicated a clear distinction between the studied plots, based on measured soil variables, especially base sum and clay, which were the most differentiating properties between Campinarana and Forest; For the separation of the Campinarana types, the main distinguishing variable was organic matter content and cation exchange capacity. Higher similarity of Campinaranas was associated to a monodominant species and the lower similarity of Forest was related to the high occurrence of locally rare species |
Disciplines | Biología |
Paraules clau: | Ecología, Suelos arenosos, Comunidades vegetales, Composición de la comunidad, Correlación canónica, Especies dominantes, Fitosociología |
Keyword: | Biology, Ecology, Sandy soils, Plant communities, Community composition, Canonical correlation, Dominant species, Phytosociology |
Text complet: | Texto completo (Ver HTML) |