Spatiotemporal variations of biogenic elements and sources of sedimentary organic matter in the largest oyster mariculture bay (Maowei Sea), Southwest China
文献类型：期刊论文
| 作者 | Xu, Cheng2; Yang, Bin2,3; Dan, Solomon Felix2,4; Zhang, Dong3; Liao, Riquan2; Lu, Dongliang2; Li, Ruihuan1; Ning, Zhiming3; Peng, Shiqiu1 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020 |
| 卷号 | 730页码:139056 |
| ISSN号 | 0048-9697 |
| 关键词 | Biogenic elements Sedimentary organic matter Mariculture Seasonal variation Maowei Sea |
| 英文摘要 | China is the largest mariculture producer in the world, but detailed information on the spatiotemporal variations of biogenic elements and sources of sedimentary organic matter (SOM) via mariculture is limited. The primary objective of this study was to assess the influence of mariculture on the origin of SOM in relation with biogenic elements and geochemical paramaters due to the importance of SOM as a potential source of nutrients and energy in coastal marine environments. Surface sediments from the Maowei Sea were collected in August (summer) and December (winter), 2016 for grain size, total organic carbon (TOC), total nitrogen (TN), organic phosphorus (OP), biogenic silica (BSi), delta C-13 and delta N-15 analyses. Significant correlation (p < 0.01) was observed between TOC and TN in summer and winter respectively, indicating that they have common source in both seasons. The spatiotemporal distributions of TOC, TN, OP and BSi were influenced by the sources and distribution of SOM, grain sizes and hydrodynamic conditions in the Maowei Sea. The overall ranges of delta C-13 (-26.86 parts per thousand to -23.01 parts per thousand) and delta N-15 (2.54 parts per thousand to 9.82 parts per thousand) and C/N ratio (5.83 to 18.67) showed that SOM is derived from mixed sources. The delta C-13 and delta N-15-based three-end-member mixing model results revealed that >40% of the deposited SOM originates from terrestrial source during two seasons. The SOM from shellfish mariculture was seasonal, mainly deposited in the intensive mariculture areas, and its proportions were only higher than contributions from marine plankton in summer. Generally, this study indicates that shellfish biodepositions can significantly influence the cycle of carbon and other biogenic elements in the intensive mariculture areas. Nevertheless, the overall dominance of terrestrial and marine SOM suggests that the sources of SOM and factors influencing carbon cycling in the Maowei Sea do not exclusively depend on the intensity of mariculture activities. (C) 2020 Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/18286]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 作者单位 | 1.Ocean Univ China, Key Lab Marine Chem Theory & Technol, Minist Educ, Qingdao 266100, Peoples R China 2.Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541000, Peoples R China 3.Beibu Gulf Univ, Guangxi Key Lab Marine Disaster Beibu Gulf, Qinzhou 535011, Peoples R China 4.Guangxi Univ, Guangxi Lab Study Coral Reefs South China Sea, Nanning 530004, Peoples R China 5.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Cheng,Yang, Bin,Dan, Solomon Felix,et al. Spatiotemporal variations of biogenic elements and sources of sedimentary organic matter in the largest oyster mariculture bay (Maowei Sea), Southwest China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,730:139056. |
| APA | Xu, Cheng.,Yang, Bin.,Dan, Solomon Felix.,Zhang, Dong.,Liao, Riquan.,...&Peng, Shiqiu.(2020).Spatiotemporal variations of biogenic elements and sources of sedimentary organic matter in the largest oyster mariculture bay (Maowei Sea), Southwest China.SCIENCE OF THE TOTAL ENVIRONMENT,730,139056. |
| MLA | Xu, Cheng,et al."Spatiotemporal variations of biogenic elements and sources of sedimentary organic matter in the largest oyster mariculture bay (Maowei Sea), Southwest China".SCIENCE OF THE TOTAL ENVIRONMENT 730(2020):139056. |
入库方式： OAI收割
来源：南海海洋研究所
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