Skip to main content
Article
Taking the Metabolic Pulse of the World's Coral Reefs
PLoS ONE
  • Tyler Cyronak, University of California - San Diego
  • Andreas J. Andersson, University of California - San Diego
  • Chris Langdon, University of Miami
  • Rebecca Albright, Carnegie Institution for Science
  • Nicholas R. Bates, Bermuda Institute of Ocean Sciences - United Kingdom; University of Southampton - United Kingdom
  • Ken Caldeira, Carnegie Institution for Science
  • Renee Carlton, National Oceanic and Atmospheric Administration; University of Miami
  • Jorge E. Corredor, University of Puerto Rico - Mayaguez
  • Rob B. Dunbar, Stanford University
  • Ian Enochs, National Oceanic and Atmospheric Administration; University of Miami
  • Jonathan Erez, The Hebrew University - Jerusalem, Israel
  • Bradley D. Eyre, Southern Cross University - Lismore, Australia
  • Jean-Pierre Gattuso, Laboratoire d'Oceanographie de Villefranche - France; Sorbonne Universites - France; Sciences Po - France
  • Dwight Gledhill, National Oceanic and Atmospheric Administration
  • Hajime Kayanne, The University of Tokyo - Japan
  • David I. Kline, University of California - San Diego; Smithsonian Institution
  • David A. Koweek, Stanford University
  • Coulson Lantz, Southern Cross University - Lismore, Australia
  • Boaz Lazar, The Hebrew University - Jerusalem, Israel
  • Derek Manzello, National Oceanic and Atmospheric Administration
  • Ashly McMahon, Southern Cross University - Coffs Harbour, Australia
  • Melissa Melendez, University of New Hampshire
  • Heather N. Page, University of California - San Diego
  • Isaac R. Santos, Southern Cross University - Coffs Harbour, Australia
  • Kai G. Schulz, Southern Cross University - Lismore, Australia
  • Emily Shaw, California State University
  • Jacob Silverman, National Institute of Oceanography - Haifa, Israel
  • Atsushi Suzuki, National Institute of Advanced Industrial Science and Technology - Tsukuba, Japan
  • Lida Teneva, Stanford University; Center for Oceans
  • Atsushi Watanabe, Tokyo Institute of Technology - Japan
  • Shoji Yamamoto, The University of Tokyo - Japan
Document Type
Article
Publication Date
1-9-2018
Keywords
  • Coral reefs,
  • Sea water,
  • Calcification,
  • Marine ecology,
  • Carbonates,
  • Marine chemistry,
  • Ocean acidification,
  • Biogeochemistry
Abstract

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.

Comments

This is an open access article, free of all copyright, and may be freely reproduced, distributed, transmitted, modified, built upon, or otherwise used by anyone for any lawful purpose. The work is made available under the Creative Commons CC0 public domain dedication.

Additional Comments
NSF grant #s: OCE 09-28406, OCE 12-55042; Australian Research Council grant #: DP150102092; Agence Nationale de la Recherche STORISK project #: ANR-15-CE03-0003-08, J-PG
ORCID ID
0000-0003-3556-7616
DOI
10.1371/journal.pone.0190872
Citation Information
Tyler Cyronak, Andreas J. Andersson, Chris Langdon, Rebecca Albright, et al.. "Taking the Metabolic Pulse of the World's Coral Reefs" PLoS ONE Vol. 13 Iss. 1 (2018) p. e0190872 ISSN: 1932-6203
Available at: http://works.bepress.com/tyler-cyronak/16/