Schiettekatte N. M. D. auteur aut IRD Brandl S. J. auteur aut IRD Casey J. M. auteur aut IRD Graham N. A. J. auteur aut IRD Barneche D. R. auteur aut IRD Burkepile D. E. auteur aut IRD Allgeier J. E. auteur aut IRD Arias-Gonzalez J. E. auteur aut IRD Edgar G. J. auteur aut IRD Ferreira C. E. L. auteur aut IRD Floeter S. R. auteur aut IRD Friedlander A. M. auteur aut IRD Green A. L. auteur aut IRD Kulbicki Michel auteur aut IRD Letourneur Y. auteur aut IRD Luiz O. J. auteur aut IRD Merciere A. auteur aut IRD Morat F. auteur aut IRD Munsterman K. S. auteur aut IRD Rezende E. L. auteur aut IRD Rodriguez-Zaragoza F. A. auteur aut IRD Stuart-Smith R. D. auteur aut IRD Vigliola Laurent auteur aut IRD Villeger S. auteur aut IRD Parravicini V. auteur aut IRD text journalArticle eng text/pdf born digital access Integrating bioenergetic models and global coral reef fish community surveys, the authors show that there are functional trade-offs, meaning that no community can maximize all functions, and that dominant species underpin local functions, but their identity varies geographically. Human impact increasingly alters global ecosystems, often reducing biodiversity and disrupting the provision of essential ecosystem services to humanity. Therefore, preserving ecosystem functioning is a critical challenge of the twenty-first century. Coral reefs are declining worldwide due to the pervasive effects of climate change and intensive fishing, and although research on coral reef ecosystem functioning has gained momentum, most studies rely on simplified proxies, such as fish biomass. This lack of quantitative assessments of multiple process-based ecosystem functions hinders local and regional conservation efforts. Here we combine global coral reef fish community surveys and bioenergetic models to quantify five key ecosystem functions mediated by coral reef fishes. We show that functions exhibit critical trade-offs driven by varying community structures, such that no community can maximize all functions. Furthermore, functions are locally dominated by few species, but the identity of dominant species substantially varies at the global scale. In fact, half of the 1,110 species in our dataset are functionally dominant in at least one location. Our results reinforce the need for a nuanced, locally tailored approach to coral reef conservation that considers multiple ecological functions beyond the effect of standing stock biomass. specialized OCEAN INDIEN PACIFIQUE ATLANTIQUE 036 020 [Early access] [13 ] 2022 2397-334X https://www.documentation.ird.fr/hor/fdi:010084591 10.1038/s41559-022-01710-5 2397-334X [F B010084591] https://www.documentation.ird.fr/hor/fdi:010084591 https://www.documentation.ird.fr/intranet/publi/2022-05/010084591.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2022-05-04 2025-02-24 fdi:010084591 fre