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Ocean Science: Preindustrial to modern interdecadal variability in coral reef pH

Journal Article


Abstract


  • The oceans are becoming more acidic due to absorption of anthropogenic carbon dioxide from the atmosphere. The impact of ocean acidification on marine ecosystems is unclear, but it will likely depend on species adaptability and the rate of change of seawater pH relative to its natural variability. To constrain the natural variability in reef-water pH, we measured boron isotopic compositions in a ≃300-year-old massive Porites coral from the southwestern Pacific. Large variations in pH are found over ≃50-year cycles that covary with the Interdecadal Pacific Oscillation of ocean-atmosphere anomalies, suggesting that natural pH cycles can modulate the impact of ocean acidification on coral reef ecosystems.

Publication Date


  • 2005

Citation


  • Pelejero, C., Calvo, E., McCulloch, M. T., Marshall, J. F., Gagan, M. K., Lough, J. M., & Opdyke, B. N. (2005). Ocean Science: Preindustrial to modern interdecadal variability in coral reef pH. Science, 309(5744), 2204-2207. doi:10.1126/science.1113692

Scopus Eid


  • 2-s2.0-25844480249

Web Of Science Accession Number


Start Page


  • 2204

End Page


  • 2207

Volume


  • 309

Issue


  • 5744

Abstract


  • The oceans are becoming more acidic due to absorption of anthropogenic carbon dioxide from the atmosphere. The impact of ocean acidification on marine ecosystems is unclear, but it will likely depend on species adaptability and the rate of change of seawater pH relative to its natural variability. To constrain the natural variability in reef-water pH, we measured boron isotopic compositions in a ≃300-year-old massive Porites coral from the southwestern Pacific. Large variations in pH are found over ≃50-year cycles that covary with the Interdecadal Pacific Oscillation of ocean-atmosphere anomalies, suggesting that natural pH cycles can modulate the impact of ocean acidification on coral reef ecosystems.

Publication Date


  • 2005

Citation


  • Pelejero, C., Calvo, E., McCulloch, M. T., Marshall, J. F., Gagan, M. K., Lough, J. M., & Opdyke, B. N. (2005). Ocean Science: Preindustrial to modern interdecadal variability in coral reef pH. Science, 309(5744), 2204-2207. doi:10.1126/science.1113692

Scopus Eid


  • 2-s2.0-25844480249

Web Of Science Accession Number


Start Page


  • 2204

End Page


  • 2207

Volume


  • 309

Issue


  • 5744