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Variability of skeletal growth and delta C-13 in massive corals from the South China Sea: Effects of photosynthesis, respiration and human activities
Sun, DH; Su, RX; McConnaughey, TA; Bloemendal, J; dhsun@lzu.edu.cn; srx@scsio.ac.cn; mcconnat@gmail.com; jan@liv.ac.uk
2008
发表期刊CHEMICAL GEOLOGY
ISSN0009-2541
卷号255期号:40606页码:414-425
摘要The delta C-13, skeletal density and extension rates were analyzed along same growth axes of massive coral colonies collected from the shallow sea to the east and south of Hainan Island, northern South China Sea. Seasonal changes of delta C-13, extension and calcification rates of Porites lutea and Porites lobata are in phase and correlated with solar radiation. In addition, annual high delta C-13 values, extension and calcification rates occur in spring and low values and rates occur in late autumn or early winter. The annual highest density band of P. lutea formed in spring and the lowest ones in early winter, whereas R lobata shows only a weak seasonal density change. We suggest that the seasonal features of the coral delta C-13, extension and calcification rates are modulated by light-induced photosynthesis determined by solar radiation reaching the top of the atmosphere, and by cloud coverage. The results also support the suggestion that photosynthesis promotes both the extension growth and skeleton thickening for P. lutea, but that it mainly promotes the extension growth for P. lobata. Remarkable inter-decadal trends are evident in the coral records; these trends are progressive decreases of skeletal delta C-13, density and calcification rate, and an increase of the extension rate over the last 30 years, which are marked by abrupt changes at about 1987. These trends are ascribed to intensified coral respiration arising from rising temperature, together with the effects of declining nutrient levels caused by the destruction of the coastal ecosystem in the sampling regions. (C) 2008 Elsevier B.V. All rights reserved.
部门归属[Sun, Donghuai] Lanzhou Univ, Minist Educ, Key Lab W Chinas Environm Syst, Lanzhou 730000, Peoples R China; [Sun, Donghuai; Su, Ruixia] Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Bloemendal, Jan] Univ Liverpool, Dept Geog, Liverpool L69 7ZT, Merseyside, England
关键词Coral Growth Carbon Isotopes Photosynthesis South China Sea
学科领域Geochemistry & Geophysics
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收录类别sci
资助项目海洋地质
WOS记录号WOS:000260919600010
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文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/4526
专题中科院边缘海地质重点实验室
通讯作者dhsun@lzu.edu.cn; srx@scsio.ac.cn; mcconnat@gmail.com; jan@liv.ac.uk
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Sun, DH,Su, RX,McConnaughey, TA,et al. Variability of skeletal growth and delta C-13 in massive corals from the South China Sea: Effects of photosynthesis, respiration and human activities[J]. CHEMICAL GEOLOGY,2008,255(40606):414-425.
APA Sun, DH.,Su, RX.,McConnaughey, TA.,Bloemendal, J.,dhsun@lzu.edu.cn.,...&jan@liv.ac.uk.(2008).Variability of skeletal growth and delta C-13 in massive corals from the South China Sea: Effects of photosynthesis, respiration and human activities.CHEMICAL GEOLOGY,255(40606),414-425.
MLA Sun, DH,et al."Variability of skeletal growth and delta C-13 in massive corals from the South China Sea: Effects of photosynthesis, respiration and human activities".CHEMICAL GEOLOGY 255.40606(2008):414-425.
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