Marine & Environmental Sciences Faculty Articles
Coral Reefs Will Transition to Net Dissolving Before End of Century
ORCID
0000-0003-3556-7616
Document Type
Article
Publication Title
Science
ISSN
0036-8075
Publication Date
2-23-2018
Abstract
Ocean acidification refers to the lowering of the ocean’s pH due to the uptake of anthropogenic CO2 from the atmosphere. Coral reef calcification is expected to decrease as the oceans become more acidic. Dissolving calcium carbonate (CaCO3) sands could greatly exacerbate reef loss associated with reduced calcification but is presently poorly constrained. Here we show that CaCO3 dissolution in reef sediments across five globally distributed sites is negatively correlated with the aragonite saturation state (Ωar) of overlying seawater and that CaCO3 sediment dissolution is 10-fold more sensitive to ocean acidification than coral calcification. Consequently, reef sediments globally will transition from net precipitation to net dissolution when seawater Ωar reaches 2.92 ± 0.16 (expected circa 2050 CE). Notably, some reefs are already experiencing net sediment dissolution.
DOI
10.1126/science.aao1118
Volume
359
Issue
6378
First Page
908
Last Page
911
Additional Comments
ARC grant #s: 110103638, 150102092; NSF grant #s: OCE 12-55042, N NA140AR170071
NSUWorks Citation
Bradley D. Eyre, Tyler Cyronak, Patrick Drupp, Eric Heinen De Carlo, Julian P. Sachs, and Andreas J. Andersson. 2018. Coral Reefs Will Transition to Net Dissolving Before End of Century .Science , (6378) : 908 -911. https://nsuworks.nova.edu/occ_facarticles/1029.
Comments
©2018 American Association for the Advancement of Science. All rights reserved.