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Benthic Marine Flora of the Northeastern and Southeastern Coast of Ilha Grande, Rio de Janeiro, Brazil: Phytogeographic Considerations

1992; De Gruyter; Volume: 35; Issue: 5 Linguagem: Inglês

10.1515/botm.1992.35.5.357

1437-4323

Cristina Falcão, Maria Cristina da Silva Maurat, Cristina Aparecida Gomes Nassar, Maria Teresa Menezes de Széchy, Gilberto J. P. Mitchell,

Marine Biology and Ecology Research

Ilha Grande is situated off the coast of Rio de Janeiro State, in southeastern Brazil. A total of 128 marine algal taxa were identified, comprising 26 Chlorophyceae (20.3%), 28 Phaeophyceae (21.9%) and 74 Rhodophyceae (57.8%). The phytogeographic analysis of species from Ilha Grande, using R/P and R+C/P indices, show lower values when compared with the continental coast. Most of the differences observed were due to the higher percentage of Phaeophyceae. This paper shows that these indices should be used with caution when applied to tropical islands