Ideas and perspectives : Southwestern tropical Atlantic coral growth response to atmospheric circulation changes induced by ozone depletion in Antarctica

Heitor Evangelista 1, * Ilana Wainer 2 Abdelfettah Sifeddine 3, 4, 5 Thierry Corrège 6 Renato Campello Cordeiro 4 Saulo Lamounier 1 Daniely Godiva 7, 1 Chuan-Chou Shen 8 Florence Le Cornec 3, 5 Bruno Turcq 3, 5 Claire E. Lazareth 5, 3 Ching-Yi Hu 8
* Corresponding author
1 LARAMG - Laboratório de Radioecologia e Mudanças Globais
2 USP - Universidade de São Paulo
3 BTP - Biogéochimie-Traceurs-Paléoclimat
LOCEAN - Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques
4 Departamento de Geoquímica - Instituto de Quimica
5 IRD [France-Nord] - Institut de Recherche pour le Développement
6 EPOC - UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux
7 UFF, Outeiro de Sao Jao Batista
8 High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC)
Abstract : Recent Southern Hemisphere (SH) atmospheric circulation, predominantly driven by stratospheric ozone depletion over Antarctica, has caused changes in climate across the extratropics. Here, we present evidence that the Brazilian coast (southwestern Atlantic) may have been impacted from both wind and sea-surface temperature changes derived from this process. Skeleton analysis of massive coral species living in shallow waters off Brazil are very sensitive to air–sea interactions, and seem to record this impact. Growth rates of Brazilian corals show a trend reversal that fits the ozone depletion evolution, confirming that ozone impacts are far reaching and potentially affect coastal ecosystems in tropical environments.
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Heitor Evangelista, Ilana Wainer, Abdelfettah Sifeddine, Thierry Corrège, Renato Campello Cordeiro, et al.. Ideas and perspectives : Southwestern tropical Atlantic coral growth response to atmospheric circulation changes induced by ozone depletion in Antarctica. Biogeosciences Discussions, European Geosciences Union, 2016, 12 (16), pp.13193-13213. ⟨10.5194/bgd-12-13193-2015⟩. ⟨ird-01351307⟩

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