Coral calcifying fluid pH dictates response to ocean acidification

Michael Holcomb, A.A. Venn, E. Tambutté, S. Tambutté, D. Allemand, Julie Trotter, Malcolm Mcculloch

    Research output: Contribution to journalArticle

    70 Citations (Scopus)

    Abstract

    Ocean acidification driven by rising levels of CO 2 impairs calcification, threatening coral reef growth. Predicting how corals respond to CO 2 requires a better understanding of how calcification is controlled. Here we show how spatial variations in the pH of the internal calcifying fluid (pH cf) in coral (Stylophora pistillata) colonies correlates with differential sensitivity of calcification to acidification. Coral apexes had the highest pH cf and experienced the smallest changes in pH cf in response to acidification. Lateral growth was associated with lower pH cf and greater changes with acidification. Calcification showed a pattern similar to pH cf, with lateral growth being more strongly affected by acidification than apical. Regulation of pH cf is therefore spatially variable within a coral and critical to determining the sensitivity of calcification to ocean acidification.
    Original languageEnglish
    Article number5207
    Number of pages4
    JournalScientific Reports
    Volume4
    DOIs
    Publication statusPublished - 6 Jun 2014

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    Anthozoa
    Oceans and Seas
    Carbon Monoxide
    Growth
    Coral Reefs

    Cite this

    Holcomb, Michael ; Venn, A.A. ; Tambutté, E. ; Tambutté, S. ; Allemand, D. ; Trotter, Julie ; Mcculloch, Malcolm. / Coral calcifying fluid pH dictates response to ocean acidification. In: Scientific Reports. 2014 ; Vol. 4.
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    abstract = "Ocean acidification driven by rising levels of CO 2 impairs calcification, threatening coral reef growth. Predicting how corals respond to CO 2 requires a better understanding of how calcification is controlled. Here we show how spatial variations in the pH of the internal calcifying fluid (pH cf) in coral (Stylophora pistillata) colonies correlates with differential sensitivity of calcification to acidification. Coral apexes had the highest pH cf and experienced the smallest changes in pH cf in response to acidification. Lateral growth was associated with lower pH cf and greater changes with acidification. Calcification showed a pattern similar to pH cf, with lateral growth being more strongly affected by acidification than apical. Regulation of pH cf is therefore spatially variable within a coral and critical to determining the sensitivity of calcification to ocean acidification.",
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    Coral calcifying fluid pH dictates response to ocean acidification. / Holcomb, Michael; Venn, A.A.; Tambutté, E.; Tambutté, S.; Allemand, D.; Trotter, Julie; Mcculloch, Malcolm.

    In: Scientific Reports, Vol. 4, 5207, 06.06.2014.

    Research output: Contribution to journalArticle

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    AU - Allemand, D.

    AU - Trotter, Julie

    AU - Mcculloch, Malcolm

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    AB - Ocean acidification driven by rising levels of CO 2 impairs calcification, threatening coral reef growth. Predicting how corals respond to CO 2 requires a better understanding of how calcification is controlled. Here we show how spatial variations in the pH of the internal calcifying fluid (pH cf) in coral (Stylophora pistillata) colonies correlates with differential sensitivity of calcification to acidification. Coral apexes had the highest pH cf and experienced the smallest changes in pH cf in response to acidification. Lateral growth was associated with lower pH cf and greater changes with acidification. Calcification showed a pattern similar to pH cf, with lateral growth being more strongly affected by acidification than apical. Regulation of pH cf is therefore spatially variable within a coral and critical to determining the sensitivity of calcification to ocean acidification.

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    Holcomb M, Venn AA, Tambutté E, Tambutté S, Allemand D, Trotter J et al. Coral calcifying fluid pH dictates response to ocean acidification. Scientific Reports. 2014 Jun 6;4. 5207. https://doi.org/10.1038/srep05207