Pessenda L. C. R. auteur aut IRD Gouveia S. E. M. auteur aut IRD Ledru Marie-Pierre auteur aut IRD Aravena R. auteur aut IRD Ricardi-Branco F. S. auteur aut IRD Bendassolli J. A. auteur aut IRD Ribeiro A. D. auteur aut IRD Saia S. E. M. G. auteur aut IRD Sifeddine Abdelfettah auteur aut IRD Menor E. D. auteur aut IRD de Oliveira S. M. B. auteur aut IRD Cordeiro R. C. auteur aut IRD Freitas A. M. D. auteur aut IRD Boulet R. auteur aut IRD Filizola H. F. auteur aut IRD text journalArticle eng text/pdf reformatted digital access The aim of this research was to reconstruct vegetation changes (with climate inferences) that occurred during the Holocene in the Fernando de Noronha Island, Pernambuco State, northeastern Brazil. The research approach included the use of geochemical (mineralogy, elemental), carbon isotopes (delta C-13, C-14) and pollen analyses in soil organic matter (SOM) and sediments collected in Lagoa da Viracao and Manguezal do Sueste. The carbon isotopes data of SOM indicated that there was no significant vegetation changes during the last 7400 BP, suggesting that the climate was not the determinant factor for the vegetation dynamics. The pollen analysis of the sediment of a core collected in the Lagoa da Viracao showed the absence of Quaternary material in the period between 720 BP and 90 BP. The mineralogical analysis of deeper layer showed the presence of diopside indicating this material was developed "in situ". Only in the shallow part of the core were found pollen of similar plant species of the modern vegetation. The geochemistry and isotope results, in association with the sediment type and pollen analyses of sediment samples of Manguezal do Sueste, indicated variations in the vegetation and in its location since the middle Holocene. Such variations can be associated with climatic events and sea level oscillations and also with anthropogenic events considering the last five hundred years. specialized pollen carbon isotopes paleovegetation Fernando de Noronha Holocene 064 076 80 4 677-691 2008 0001-3765 https://www.documentation.ird.fr/hor/fdi:010044151 10.1590/S0001-37652008000400009 0001-3765 [F B010044151] https://www.documentation.ird.fr/hor/fdi:010044151 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers16-08/010044151.pdf IRD - Base Horizon / Pleins textes 2009-01-09 2017-08-23 fdi:010044151 fre