From holocene to anthropogenic impact: Surpassing coral's pH up-regulation capacity under ocean acidification
文献类型：期刊论文
| 作者 | Kang, Huiling3; Chen, Xuefei3; Deng, Guangchao2,3; Zhao, Jian-xin1; Wei, Gangjian3 |
| 刊名 | GLOBAL AND PLANETARY CHANGE
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 245页码:11 |
| 关键词 | Coral calcifying fluid Boron isotope Ocean acidification Holocene pH sw reconstruction |
| ISSN号 | 0921-8181 |
| DOI | 10.1016/j.gloplacha.2024.104683 |
| 英文摘要 | Corals' regulation of internal calcifying fluid (CF or cf) chemistry is crucial for their extraordinary calcification capacity, endowing them with a certain ability to cope with environmental changes such as anthropogenic ocean acidification (OA) and warming. However, it remains unclear whether the impacts of these changes on corals have substantially surpassed their regulation capacity, particularly in comparison to the CF chemistry responses to natural climate variability with minor or no human perturbation. In this study, we reconstructed the pH, dissolved inorganic carbon, and carbonate ion concentrations in coral CF (pH(cf), DICcf, and [CO32-](cf)) during the Mid- to Late-Holocene, by analyzing the skeletal delta B-11 and B/Ca of 80 Porites spp. from eastern Hainan Island in the South China Sea (SCS). Our records indicate considerable inter-colony variations in CF chemistry, with maximum disparities reaching 0.18 units for pH(cf) and 1664 mu mol/kg for DICcf. With this in mind, we found no clear responses of coral DICcf to the climate fluctuations during the past similar to 5500 years, nor evident differences in pH(cf) and [CO32-](cf) across pre-industrial natural epochs. However, pH(cf) and [CO32-](cf) of modern corals have significantly declined compared to fossil corals. Further analyzes compiling global data on Porites spp. also confirm this pronounced pH(cf) decrease in modern corals, suggesting the limitations of pantropical corals to counteract OA by up-regulating pH(cf). Importantly, these fossil and modern corals reveal a clear long-term pH(cf) descending trend parallel to atmospheric CO2 changes, supporting the reliability of coral delta B-11 in recording long-term changes in seawater pH (pH(sw)). |
| WOS研究方向 | Physical Geography ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:001405012900001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/82585]  |
| 专题 | 同位素地球化学国家重点实验室 |
| 通讯作者 | Chen, Xuefei |
| 作者单位 | 1.Univ Queensland, Sch Earth & Environm Sci, Brisbane, Qld, Australia 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Isotope Geochem, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Kang, Huiling,Chen, Xuefei,Deng, Guangchao,et al. From holocene to anthropogenic impact: Surpassing coral's pH up-regulation capacity under ocean acidification[J]. GLOBAL AND PLANETARY CHANGE,2025,245:11. |
| APA | Kang, Huiling,Chen, Xuefei,Deng, Guangchao,Zhao, Jian-xin,&Wei, Gangjian.(2025).From holocene to anthropogenic impact: Surpassing coral's pH up-regulation capacity under ocean acidification.GLOBAL AND PLANETARY CHANGE,245,11. |
| MLA | Kang, Huiling,et al."From holocene to anthropogenic impact: Surpassing coral's pH up-regulation capacity under ocean acidification".GLOBAL AND PLANETARY CHANGE 245(2025):11. |
入库方式： OAI收割
来源：广州地球化学研究所
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