Journal
NATURE COMMUNICATIONS
Volume 5, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ncomms4310
Keywords
-
Categories
Funding
- Yulgilbar Foundation/Lizard Island Postdoctoral Fellowship from the Australian Museum
- former Centre for Marine Studies at The University of Queensland
- Australian Research Council (ARC) Discovery grant [DP0988039]
- ARC Linkage grant [LP0989945]
- Australian Research Council [DP0988039] Funding Source: Australian Research Council
Ask authors/readers for more resources
Human-induced ocean acidification and warming alter seawater carbonate chemistry reducing the calcification of reef-building crustose coralline algae (CCA), which has implications for reef stability. However, due to the presence of multiple carbonate minerals with different solubilities in seawater, the algal mineralogical responses to changes in carbonate chemistry are poorly understood. Here we demonstrate a 200% increase in dolomite concentration in living CCA under greenhouse conditions of high pCO(2) (1,225 mu atm) and warming (30 degrees C). Aragonite, in contrast, increases with lower pCO(2) (296 mu atm) and low temperature (28 degrees C). Mineral changes in the surface pigmented skeleton are minor and dolomite and aragonite formation largely occurs in the white crust beneath. Dissolution of high-Mg-calcite and particularly the erosive activities of endolithic algae living inside skeletons play key roles in concentrating dolomite in greenhouse treatments. As oceans acidify and warm in the future, the relative abundance of dolomite in CCA will increase.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available