Receveur A. auteur aut IRD Menkès Christophe auteur aut IRD Lengaigne Matthieu auteur aut IRD Ariza A. auteur aut IRD Bertrand Arnaud auteur aut IRD Dutheil C. auteur aut IRD Cravatte Sophie auteur aut IRD Allain V. auteur aut IRD Barbin L. auteur aut IRD Lebourges Dhaussy Anne auteur aut IRD Lehodey P. auteur aut IRD Nicol S. auteur aut IRD text journalArticle eng text/pdf reformatted digital access Oceanic eddies are recognized as pivotal components in marine ecosystems, believed to concentrate a wide range of marine life spanning from phytoplankton to top predators. Previous studies have posited that marine predators are drawn to these eddies due to an aggregation of their forage fauna. In this study, we examine the response of forage fauna, detected by shipboard acoustics, across a broad sample of a thousand eddies across the world's oceans. While our findings show an impact of eddies on surface temperatures and phytoplankton in most cases, they reveal that only a minority (13%) exhibit significant effects on forage fauna, with only 6% demonstrating an oasis effect. We also show that an oasis effect can occur both in anticyclonic and cyclonic eddies, and that the few high-impact eddies are marked by high eddy amplitude and strong water-mass-trapping. Our study underscores the nuanced and complex nature of the aggregating role of oceanic eddies, highlighting the need for further research to elucidate how these structures attract marine predators. This study explores alternative stable states in microbial communities. Focusing on a respiratory tract community of 6 species, the authors identified four distinct stable states that are predicted to be driven by cooperative growth. The findings contrast with the common association between competitive interactions and multistability in microbial communities. Using a sample of a thousand eddies across the world's oceans, this study examines the response of forage fauna detected by shipboard acoustics. The findings show that a minority of eddies exhibit significant effects on forage fauna, but that an oasis effect can sometimes occur. This highlights the need for further research to elucidate how eddies might attract marine predators. specialized MONDE 036 032 15 1 4834 [10 ] 2024 https://www.documentation.ird.fr/hor/fdi:010091129 10.1038/s41467-024-49113-3 [F B010091129] https://www.documentation.ird.fr/hor/fdi:010091129 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2024-09/010091129.pdf IRD - Base Horizon / Pleins textes 2024-09-27 2025-11-06 fdi:010091129 fre