Different calcification responses of two hermatypic corals to CO2-driven ocean acidification
- 224 Downloads
Understanding how calcification is influenced by the enhanced dissolution of CO2 in the oceans is the key to evaluating the effects of ocean acidification (OA) on coral reefs. In this study, two branching hermatypic corals widely distributed in the South China Sea, Pocillopora damicornis and Seriatopora caliendrum, were used to study the calcification responses to CO2-driven OA (7.77 ± 0.07 vs. 8.15 ± 0.12). Our results showed that the calcification rate (0.17 ± 0.04%/day to 0.21 ± 0.12%/day) in P. damicornis remained unchanged in the acidified seawaters, but that in S. caliendrum decreased significantly (0.62 ± 0.21%/day to 0.44 ± 0.11%/day). Our results suggested that reef corals with high calcification rates may be more susceptible to the enhanced dissolution of CO2. Differential calcified response to elevated CO2 may be closely attributed to coralline capacity of the upregulation at their site of calcification in acidified seawater.
KeywordsOcean acidification Pocillopora damicornis Seriatopora caliendrum Calcification
This work was funded by the China-ASEAN Maritime Cooperation Fund Project (contract no: HX150702, HX161101), Regional Demonstration of Marine Economy Innovative Development Project (contract no: 16PZY002SF18), Xiamen Southern Oceanographic Center (contract no: 14CZY037HJ11), Global Change and Air-sea Interaction Research, and the Natural Science Foundation of Fujian Province (2015J05083).
- Bhagooli R, Yakovleva I (2004) Differential bleaching susceptibility and mortality patterns among four corals in response to thermal stress. Symbiosis 37(1–3):121–136Google Scholar
- Carreiro-Silva M, Cerqueira T, Godinho A, Caetano M, Santos R, Bettencourt R (2014) Molecular mechanisms underlying the physiological responses of the cold-water coral Desmophyllum dianthus to ocean acidification. Coral Reefs 33(2):465–476. https://doi.org/10.1007/s00338-014-1129-2 CrossRefGoogle Scholar
- Dickson AG, Sabine CL, Christian JR (2007) Guide to best practices for ocean CO2 measurements. North Pacific Marine Science Organization, SidneyGoogle Scholar
- Langdon C, Atkinson M (2005) Effect of elevated pCO2 on photosynthesis and calcification of corals and interactions with seasonal change in temperature/irradiance and nutrient enrichment. J Geophys Res Oceans 110(C09S07):1978–2012Google Scholar
- Lewis E, Wallace D (1998) CO2SYS Program. Carbon Dioxide Information Analysis Center. Oak Ridge National Laboratory Environmental Sciences Division, Oak RidgeGoogle Scholar
- McCulloch M, Trotter J, Montagna P, Falter J, Dunbar R, Freiwald A, Försterra G, López Correa M, Maier C, Rüggeberg A, Taviani M (2012b) Resilience of cold-water scleractinian corals to ocean acidification: boron isotopic systematics of pH and saturation state up-regulation. Geochim Cosmochim Acta 87:21–34CrossRefGoogle Scholar
- Pachauri RK, Meyer L, Plattner G-K, Stocker T (2015) IPCC, 2014: climate change 2014: synthesis report. Contribution of Working Groups I, II and III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. IPCCGoogle Scholar
- Rodolfo-Metalpa R, Martin S, Ferrier-Pages C, Gattuso JP (2010) Response of the temperate coral Cladocora caespitosa to mid- and long-term exposure to pCO2 and temperature levels projected for the year 2100 AD. Biogeosciences 7(1):289–300. https://doi.org/10.5194/bg-7-289-2010 CrossRefGoogle Scholar
- Tanaka K, Holcomb M, Takahashi A, Kurihara H, Asami R, Shinjo R, Sowa K, Rankenburg K, Watanabe T, McCulloch M (2015) Response of Acropora digitifera to ocean acidification: constraints from δ11B, Sr, Mg, and Ba compositions of aragonitic skeletons cultured under variable seawater pH. Coral Reefs 34(4):1139–1149. https://doi.org/10.1007/s00338-015-1319-6 CrossRefGoogle Scholar