Evangelista H. auteur aut IRD Sifeddine Abdelfettah auteur aut IRD Correge T. auteur aut IRD Servain Jacques auteur aut IRD Dassie E. P. auteur aut IRD Logato R. auteur aut IRD Cordeiro R. C. auteur aut IRD Shen C. C. auteur aut IRD Le Cornec Florence auteur aut IRD Nogueira J. auteur aut IRD Segal B. auteur aut IRD Castagna A. auteur aut IRD Turcq Bruno auteur aut IRD text journalArticle eng text/pdf born digital access Although relatively rare compared to similar latitudes in the Pacific or Indian Oceans, massive coral colonies are present in the Tropical/Equatorial Southwestern Atlantic Ocean. However, detailed geo-chemical compositions of these corals are still largely unknown. In this work, we present growth rates, Sr/Ca, and U/Ca ratios of the coral colony (Siderastrea stellata) sampled at Rocas Atoll, off the Brazilian coast. These variables are primarily affected by sea surface temperature (SST) at seasonal scale, and by wind stress at interannual scale, these results represent a broad new finding. A lower significance at the interannual time scale between Sr/Ca and U/Ca with respect to SST is attributed to the low SST amplitude closed to Equator. An investigation on the dependence of coral growth rates with respect to the "cloud shading effect' promoted by the Intertropical Convergence Zone (ITCZ) does not show significant influence. Additionally, rain seems to act on local geochemistry of Sr/Ca ratios and growth rate at the decadal scale. specialized ZONE EQUATORIALE BRESIL ATLANTIQUE 036 064 021 19 3 772-786 2018 1525-2027 https://www.documentation.ird.fr/hor/fdi:010073049 10.1002/2017gc007365 1525-2027 [F B010073049] https://www.documentation.ird.fr/hor/fdi:010073049 https://www.documentation.ird.fr/intranet/publi/2018/06/010073049.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2018-07-03 2023-07-11 fdi:010073049 fre