Taking the metabolic pulse of the world's coral reefs

Cyronak, T.; Andersson, A. J.; Langdon, C.; Albright, R.; Bates, N. R.; Caldeira, K.; Carlton, R.; Corredor, J. E.; Dunbar, R. B.; Enochs, I.; Erez, J.; Eyre, B. D.; Gattuso, J. P.; Gledhill, D.; Kayanne, H.; Kline, D. I.; Koweek, D. A.; Lantz, C.; Lazar, B.; Manzello, D.; McMahon, A.; Melendez, M.; Page, H. N.; Santos, I. R.; Schulz, K. G.; Shaw, E.; Silverman, J.; Suzuki, A.; Teneva, L.; Watanabe, A.; Yamamoto, S.

doi:10.1371/journal.pone.0190872

[PDF-1.93 MB]

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Personal Author:

Cyronak, T. ; Andersson, A. J. ; Langdon, C. ; Albright, R. ; Bates, N. R. ; ... More ▼

Description:

Worldwide, coral reef ecosystems are experiencing increasing pressure from a variety of anthropogenic perturbations including ocean warming and acidification, increased sedimentation, eutrophication, and overfishing, which could shift reefs to a condition of net calcium carbonate (CaCO3) dissolution and erosion. Herein, we determine the net calcification potential and the relative balance of net organic carbon metabolism (net community production; NCP) and net inorganic carbon metabolism (net community calcification; NCC) within 23 coral reef locations across the globe. In light of these results, we consider the suitability of using these two metrics developed from total alkalinity (TA) and dissolved inorganic carbon (DIC) measurements collected on different spatiotemporal scales to monitor coral reef biogeochemistry under anthropogenic change. All reefs in this study were net calcifying for the majority of observations as inferred from alkalinity depletion relative to offshore, although occasional observations of net dissolution occurred at most locations. However, reefs with lower net calcification potential (i.e., lower TA depletion) could shift towards net dissolution sooner than reefs with a higher potential. The percent influence of organic carbon fluxes on total changes in dissolved inorganic carbon (DIC) (i.e., NCP compared to the sum of NCP and NCC) ranged from 32% to 88% and reflected inherent biogeochemical differences between reefs. Reefs with the largest relative percentage of NCP experienced the largest variability in seawater pH for a given change in DIC, which is directly related to the reefs ability to elevate or suppress local pH relative to the open ocean. This work highlights the value of measuring coral reef carbonate chemistry when evaluating their susceptibility to ongoing global environmental change and offers a baseline from which to guide future conservation efforts aimed at preserving these valuable ecosystems.

DOI:

http://dx.doi.org/10.1371/journal.pone.0190872

Document Type:

Journal Article

Collection(s):

Coral Reef Conservation Program (CRCP)
NOAA Cooperative Institutes
Office of Oceanic and Atmospheric Research (OAR)

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[PDF - 890.92 KB]

Personal Author:

Camp, E. F.; Smith, D. J.; Evenhuis, C.; Enochs, I.; Manzello, D.; Woodcock, S.; Suggett, D. J.;

Published Date:

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Source:

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Description:

Corals are acclimatized to populate dynamic habitats that neighbour coral reefs. Habitats such as seagrass beds exhibit broad diel changes in temperature and pH that routinely expose corals to conditions predicted for reefs over the next 50-100 years...

File Type:

[PDF - 890.92 KB]
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[PDF - 2.26 MB]

Personal Author:

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Published Date:

2018

Source:

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Description:

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File Type:

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[PDF - 3.11 MB]

Personal Author:

Klotz, B. W.; Jiang, H. Y.;

Published Date:

2017

Source:

Monthly Weather Review, 145(10), 3989-4009.

Description:

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[PDF - 3.11 MB]
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[PDF - 2.59 MB]

Personal Author:

Lopez, H.; Goni, G.; Dong, S. F.;

Published Date:

2017

Source:

Geophysical Research Letters, 44(7), 3309-3318.

Description:

This study reconstructs a century-long South Atlantic Meridional Overturning Circulation (SAMOC) index. The reconstruction is possible due to its covariability with sea surface temperature (SST). A singular value decomposition (SVD) method is applied...

File Type:

[PDF - 2.59 MB]
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[PDF - 1.41 MB]

Personal Author:

Nolan, D. S.; Zhang, J. A.;

Published Date:

2017

Source:

Geophysical Research Letters, 44(8), 3924-3931.

Description:

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File Type:

[PDF - 1.41 MB]
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[PDF - 1.31 MB]

Personal Author:

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Published Date:

2018

Source:

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Description:

The persistence of coral reef frameworks requires that calcium carbonate (CaCO3) production by corals and other calcifiers outpaces CaCO3 loss via physical, chemical, and biological erosion. Coral bleaching causes declines in CaCO3 production, but th...

File Type:

[PDF - 1.31 MB]
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[PDF - 11.80 MB]

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Published Date:

2017

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Description:

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[PDF - 11.80 MB]
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[PDF - 1.59 MB]

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Published Date:

2017

Source:

Geophysical Research Letters, 44(12), 6352-6362.

Description:

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[PDF - 1.59 MB]
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[PDF - 1.92 MB]

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Published Date:

2017

Source:

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Description:

Expendable bathythermograph (XBT) data provide one of the longest available records of upper-ocean temperature. However, temperature and depth biases in XBT data adversely affect estimates of long-term trends of ocean heat content and, to a lesser ex...

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[PDF - 1.92 MB]
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[PDF - 2.45 MB]

Personal Author:

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Published Date:

2017

Source:

Monthly Weather Review, 145(6), 2083-2092.

Description:

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File Type:

[PDF - 2.45 MB]
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[PDF - 3.20 MB]

Personal Author:

Dong, S. F.; Volkov, D.; Goni, G.; Lumpkin, R.; Foltz, G. R.;

Published Date:

2017

Source:

Journal of Geophysical Research-Oceans, 122(7), 5952-5969.

Description:

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[PDF - 3.20 MB]
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[PDF - 13.12 MB]

Personal Author:

Kourafalou, V.; Androulidakis, Y.; Le Henaff, M.; Kang, H.;

Published Date:

2017

Source:

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Description:

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[PDF - 13.12 MB]
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[PDF - 11.78 MB]

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[PDF - 4.42 MB]

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[PDF - 5.61 MB]

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[PDF - 5.61 MB]
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[PDF - 4.43 MB]

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[PDF - 3.98 MB]

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