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    Ocean Acidification has Impacted Coral Growth on the Great Barrier Reef

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    2019GL086761.pdf
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    Description:
    Accepted Article
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    Type
    Article
    Authors
    Guo, Weifu cc
    Bokade, Rohit cc
    Cohen, Anne L. cc
    Mollica, Nathaniel R.
    Leung, Muriel
    Brainard, Russell E.
    KAUST Department
    Now at King Abdullah University of Science and Technology, Red Sea Research Center Thuwal Saudi Arabia
    Red Sea Research Center (RSRC)
    Date
    2020-09-25
    Online Publication Date
    2020-09-25
    Print Publication Date
    2020-10-16
    Embargo End Date
    2021-02-27
    Submitted Date
    2019-12-26
    Permanent link to this record
    http://hdl.handle.net/10754/664990
    
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    Abstract
    Ocean acidification (OA) reduces the concentration of seawater carbonate ions that stony corals need to produce their calcium carbonate skeletons, and is considered a significant threat to the functional integrity of coral reef ecosystems. However, detection and attribution of OA impact on corals in nature are confounded by concurrent environmental changes, including ocean warming. Here we use a numerical model to isolate the effects of OA and temperature, and show that OA alone has caused 13±3% decline in the skeletal density of massive Porites corals on the Great Barrier Reef since 1950. This OA-induced thinning of coral skeletons, also evident in Porites from the South China Sea but not in the central equatorial Pacific, reflects enhanced acidification of reef water relative to the surrounding open ocean. Our finding reinforces concerns that even corals that might survive multiple heatwaves are structurally weakened and increasingly vulnerable to the compounding effects of climate change.
    Citation
    Guo, W., Bokade, R., Cohen, A. L., Mollica, N. R., Leung, M., & Brainard, R. E. (2020). Ocean Acidification has Impacted Coral Growth on the Great Barrier Reef. Geophysical Research Letters. doi:10.1029/2019gl086761
    Publisher
    American Geophysical Union (AGU)
    Journal
    Geophysical Research Letters
    DOI
    10.1029/2019gl086761
    Additional Links
    https://onlinelibrary.wiley.com/doi/abs/10.1029/2019GL086761
    ae974a485f413a2113503eed53cd6c53
    10.1029/2019gl086761
    Scopus Count
    Collections
    Articles; Red Sea Research Center (RSRC)

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