Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
Tian, Qian1,2; Liu, Dong1,3 ; Li, Mengyuan1; Yuan, Peng1,4,5; Zhou, Junming1; Guo, Haozhe1
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| Increasing iron concentration inhibits the Al-incorporation into the diatom biogenic silica: From laboratory simulation of ocean iron fertilization | |
| Source Publication | CHEMICAL GEOLOGY
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| ISSN | 0009-2541 |
| 2023-11-20 | |
| Volume | 639Pages:7 |
| DOI | 10.1016/j.chemgeo.2023.121713 |
| Language | 英语 |
| WOS Research Area | Geochemistry & Geophysics |
| Abstract | Incorporated aluminum (Al) in diatom biogenic silicon (BSi) by biological behaviors shows a dissolutioninhibition effect for BSi, thus affecting the organic carbon export driven by diatoms. Ocean iron fertilization (OIF) aims to reduce the amount of atmospheric CO2 by promoting diatom blooms to enhanced the biological pump. However, BSi dissolved in a short time, leading to low efficacy of the carbon export. Considering the key role of incorporated Al in BSi dissolution, it is necessary to investigate the influence of increasing iron concentrations during OIF on Al incorporation of BSi. A lab simulation experiment, whereby Thalassiosira weissflogii was selected as a model marine diatom, was performed to reveal the effects of increasing iron concentrations on Al incorporation to BSi. Microanalyses including focused ion beams (FIB), high-resolution transmission electron microscopy (HRTEM), and high-resolution energy dispersive X-ray spectrometry (EDS) were used to identify the incorporated Al in BSi and evaluate its content. Results showed that increasing the iron concentration in the culture medium increased the cell yields but decreased the relative content of incorporated Al in BSi. The Al decrease resulted in the reduction of its effects in dissolution-habitation of BSi, which most likely also occurred during OIF. Therefore, the coupled Si-Al biogeochemical cycle and the export of organic carbon from the surface ocean driven by diatoms would be influenced by the addition of iron during OIF. |
| Keyword | Marine diatom Dissolution of diatom biogenic silica Ocean iron fertilization iron concentration Aluminum incorporation |
| WOS ID | WOS:001080472300001 |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/74967 |
| Collection | 中国科学院矿物学与成矿学重点实验室 |
| Corresponding Author | Yuan, Peng |
| Affiliation | 1.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou 510640, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Inst Subtrop Agr, Key Lab Agroecol Proc Subtrop Reg, Changsha, Peoples R China 4.Xiamen Univ, State Key Lab Marine Environm Sci, Xiamen 361102, Peoples R China 5.Guangdong Univ Technol, Sch Environm Sci & Engn, Guangzhou 510006, Peoples R China |
| Recommended Citation GB/T 7714 | Tian, Qian,Liu, Dong,Li, Mengyuan,et al. Increasing iron concentration inhibits the Al-incorporation into the diatom biogenic silica: From laboratory simulation of ocean iron fertilization[J]. CHEMICAL GEOLOGY,2023,639:7. |
| APA | Tian, Qian,Liu, Dong,Li, Mengyuan,Yuan, Peng,Zhou, Junming,&Guo, Haozhe.(2023).Increasing iron concentration inhibits the Al-incorporation into the diatom biogenic silica: From laboratory simulation of ocean iron fertilization.CHEMICAL GEOLOGY,639,7. |
| MLA | Tian, Qian,et al."Increasing iron concentration inhibits the Al-incorporation into the diatom biogenic silica: From laboratory simulation of ocean iron fertilization".CHEMICAL GEOLOGY 639(2023):7. |
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