Publication Date:
2022-05-26
Description:
Author Posting. © American Geophysical Union, 2014. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 41 (2014): 499-504, doi:10.1002/2013GL058489.
Description:
Anthropogenic carbon dioxide emissions are acidifying the oceans, reducing the concentration of carbonate ions ([CO32−]) that calcifying organisms need to build and cement coral reefs. To date, studies of a handful of naturally acidified reef systems reveal depauperate communities, sometimes with reduced coral cover and calcification rates, consistent with results of laboratory-based studies. Here we report the existence of highly diverse, coral-dominated reef communities under chronically low pH and aragonite saturation state (Ωar). Biological and hydrographic processes change the chemistry of the seawater moving across the barrier reefs and into Palau's Rock Island bays, where levels of acidification approach those projected for the western tropical Pacific open ocean by 2100. Nevertheless, coral diversity, cover, and calcification rates are maintained across this natural acidification gradient. Identifying the combination of biological and environmental factors that enable these communities to persist could provide important insights into the future of coral reefs under anthropogenic acidification.
Description:
Funded by a WHOI-OLI
Postdoctoral Scholarship to KEFS, NSF
OCE-1041106 to A.L.C. and D.C.M. and
TNC award PNA/WHOI061810 to A.L.C.
Description:
2014-07-16
Keywords:
Coral reefs
;
Ocean acidification
;
Carbonate chemistry
;
Diversity
;
Palau
;
Calcification
Repository Name:
Woods Hole Open Access Server
Type:
Article
Format:
application/msword
Format:
application/postscript
Format:
application/pdf
Permalink
