A rare oasis effect for forage fauna in oceanic eddies at the global scale - École polytechnique Accéder directement au contenu
Article Dans Une Revue Nature Communications Année : 2024

A rare oasis effect for forage fauna in oceanic eddies at the global scale

Valérie Allain
Simon Nicol
  • Fonction : Auteur

Résumé

Abstract 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.
Fichier principal
Vignette du fichier
s41467-024-49113-3.pdf (2.06 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04645472 , version 1 (12-07-2024)

Licence

Identifiants

Citer

Aurore Receveur, Christophe Menkes, Matthieu Lengaigne, Alejandro Ariza, Arnaud Bertrand, et al.. A rare oasis effect for forage fauna in oceanic eddies at the global scale. Nature Communications, 2024, 15 (1), pp.4834. ⟨10.1038/s41467-024-49113-3⟩. ⟨hal-04645472⟩
0 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More