Heat stress destabilizes symbiotic nutrient cycling in corals - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Proceedings of the National Academy of Sciences of the United States of America Année : 2021

Heat stress destabilizes symbiotic nutrient cycling in corals

Hagen M Gegner
Florian Roth
Jeremy Bougoure
Paul Guagliardo
Christian Wild
Mathieu Pernice
Jean-Baptiste Raina

Résumé

Significance Ocean warming is causing repeated mass coral bleaching, leading to catastrophic losses of coral reefs worldwide. Our ability to slow or revert this decline is hampered by an incomplete understanding of the processes underlying the breakdown of the coral–algal symbiosis. Here, we show that heat stress destabilizes the nutrient cycling between corals and their endosymbiotic algae long before bleaching becomes apparent. Notably, increased metabolic energy demands shift the coral–algal symbiosis from a nitrogen- to a carbon-limited state, reducing translocation and recycling of photosynthetic carbon. This effectively undermines the ecological advantage of harboring algal symbionts and directly contributes to the breakdown of the coral–algal symbiosis during heat stress.
Fichier principal
Vignette du fichier
r%C3%A4decker-et-al-2021-heat-stress-destabilizes-symbiotic-nutrient-cycling-in-corals.pdf (1.24 Mo) Télécharger le fichier
Origine Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04237997 , version 1 (11-10-2023)

Identifiants

Citer

Nils Rädecker, Claudia Pogoreutz, Hagen M Gegner, Anny Cárdenas, Florian Roth, et al.. Heat stress destabilizes symbiotic nutrient cycling in corals. Proceedings of the National Academy of Sciences of the United States of America, 2021, 118 (5), ⟨10.1073/pnas.2022653118⟩. ⟨hal-04237997⟩
8 Consultations
8 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More