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学科主题: Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Oceanography
题名: Positive and negative responses of coral calcification to elevated pCO(2): case studies of two coral species and the implications of their responses
作者: Huang, H ; Yuan, XC ; Cai, WJ ; Zhang, CL ; Li, XB ; Liu, S
通讯作者: xcyuan@scsio.ac.cn
关键词: Coral calcification ; Ocean acidification ; Dissolved inorganic carbon ; pH ; Modelling
刊名: MARINE ECOLOGY PROGRESS SERIES
发表日期: 2014
卷: 502, 页:145-156
收录类别: sci
部门归属: [Huang, Hui ; Yuan, Xiang-Cheng ; Zhang, Cheng-Long ; Li, Xiubao ; Liu, Sheng] Chinese Acad Sci, South China Sea Inst Oceanol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou, Guangdong, Peoples R China ; [Huang, Hui] Chinese Acad Sci, Trop Marine Biol Res Stn Hainan, Sanya 572000, Peoples R China ; [Cai, Wei-Jun] Univ Delaware, Sch Marine Sci & Policy, Newark, DE 19716 USA
项目归属: LMB
资助者: NSFC Project [31370499, 41106107, 31370500, 41076096, 41106141, 40830850]; CAS program [XDA11020204]; Ocean Public Welfare Scientific Research Project [201005012-6]; NSF [EF-1041070]; [LMEB201001]
摘要: Fragments of 2 coral species (Acropora nasuta and Pocillopora damicornis), collected from the South China Sea, were incubated for 94 d under controlled conditions of pCO(2) = 389, 700, and 1214 mu atm. Our incubation experiments showed that the net calcification rate of A. nasuta responded negatively to elevated pCO(2) in both short and mid-term incubations. In contrast, the net calcification rate of P. damicornis increased under elevated pCO(2) during the first 17 d, but then returned to background rates. Based on previous models, our modified models showed that the different responses of these 2 coral species depended on the dissolved inorganic carbon (DIC) and pH levels in coral calcifying fluid. In the studied models, the positive responses of coral calcification to higher pCO(2) could be explained by either low DIC due to a higher photosynthesis rate or a stronger H+ pump. If DIC in calcifying fluid is greatly reduced by photosynthesis, the de creased DIC in calcifying fluid may be benefited by enhanced external seawater CO2, which will partially offset the dissolution due to ocean acidification. Therefore, in addition to our experimental results, our model provides a theoretical basis showing how coral may respond negatively and positively to ocean acidification.
原文出处: 查看原文
WOS记录号: WOS:000334670700011
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10490
Appears in Collections:中科院海洋生物资源可持续利用重点实验室_期刊论文

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Recommended Citation:
Huang, H; Yuan, XC; Cai, WJ; Zhang, CL; Li, XB; Liu, S.Positive and negative responses of coral calcification to elevated pCO(2): case studies of two coral species and the implications of their responses,MARINE ECOLOGY PROGRESS SERIES,2014,502():145-156
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