Rapid ecosystem-scale consequences of acute deoxygenation on a Caribbean coral reef

Maggie D. Johnson, Jarrod J. Scott, Matthieu Leray, Noelle Lucey, Lucia M.Rodriguez Bravo, William L. Wied, Andrew H. Altieri

Research output: Contribution to journalArticlepeer-review

45 Scopus citations


Loss of oxygen in the global ocean is accelerating due to climate change and eutrophication, but how acute deoxygenation events affect tropical marine ecosystems remains poorly understood. Here we integrate analyses of coral reef benthic communities with microbial community sequencing to show how a deoxygenation event rapidly altered benthic community composition and microbial assemblages in a shallow tropical reef ecosystem. Conditions associated with the event precipitated coral bleaching and mass mortality, causing a 50% loss of live coral and a shift in the benthic community that persisted a year later. Conversely, the unique taxonomic and functional profile of hypoxia-associated microbes rapidly reverted to a normoxic assemblage one month after the event. The decoupling of ecological trajectories among these major functional groups following an acute event emphasizes the need to incorporate deoxygenation as an emerging stressor into coral reef research and management plans to combat escalating threats to reef persistence.
Original languageEnglish (US)
JournalNature Communications
Issue number1
StatePublished - Dec 1 2021
Externally publishedYes

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology
  • General Chemistry
  • General Physics and Astronomy


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