Ocean acidification does not affect the physiology of the tropical coral Acropora digitifera during a 5-week experiment

DOI PDF Web Site Web Site 被引用文献16件 参考文献48件

書誌事項

公開日
2012-11-22
資源種別
journal article
権利情報
  • http://www.springer.com/tdm
DOI
  • 10.1007/s00338-012-0979-8
公開者
Springer Science and Business Media LLC

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説明

The increase in atmospheric CO2 concentration, which has resulted from the burning of fossil fuels, is being absorbed by the oceans and is causing ocean acidification. Ocean acidification involves the decrease of both the pH and the calcium carbonate saturation state. Ocean acidification is predicted to impact the physiology of marine organisms and reduce the calcification rates of corals. In the present study, we measured the rates of calcification, respiration, photosynthesis, and zooxanthellae density of the tropical coral Acropora digitifera under near-natural summertime temperature and sunlight for a 5-week period. We found that these key physiological parameters were not affected by both mid-CO2 (pCO2 = 744 ± 38, pH = 7.97 ± 0.02, Ωarag = 2.6 ± 0.1) and high-CO2 conditions (pCO2 = 2,142 ± 205, pH = 7.56 ± 0.04, Ωarag = 1.1 ± 0.2) throughout the 35 days experimental period. Additionally, there was no significant correlation between calcification rate and seawater aragonite saturation (Ωarag). These results suggest that the impacts of ocean acidification on corals physiology may be more complex than have been previously proposed.

収録刊行物

  • Coral Reefs

    Coral Reefs 32 (1), 305-314, 2012-11-22

    Springer Science and Business Media LLC

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参考文献 (48)*注記

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