Water exchange frequency affects the fractions of sulfur and heavy metals in mariculture sediments
文献类型：期刊论文
| 作者 | Li, Zhaoran1; Sheng, Yanqing1,2
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| 刊名 | MARINE ENVIRONMENTAL RESEARCH
 |
| 出版日期 | 2025-02-01 |
| 卷号 | 204页码:9 |
| 关键词 | Reduced inorganic sulfur Heavy metals Environmental behaviour Water exchange frequency Mariculture sediment aging |
| ISSN号 | 0141-1136 |
| DOI | 10.1016/j.marenvres.2024.106887 |
| 通讯作者 | Sheng, Yanqing(yqsheng@yic.ac.cn) |
| 英文摘要 | Water exchange is a key step in mariculture activities. However, the impact of water exchange frequency (WEF) on the environmental behavior of sulfur and heavy metals is not well understood. In this study, the migration and transformation of sulfur and heavy metals in mariculture sediments under different WEFs were investigated. The results indicated that high WEF would be unfavorable to overlying water quality, while increased acid volatile sulfur (AVS) in the sediments (11.13 mu mol/g). High WEF accelerated the release of heavy metals from bottom sediments and their enrichment in the surface layer, leading to an increase in heavy metal content in the surface sediments, with Cd showing particularly significant changes (CV, similar to 20%). Moreover, the WEF also had an obvious effect on the Cd fraction (CV>10%). The increase in acid-soluble Pb inhibited the conversion of AVS to chromium (II)-reducible sulfur (CRS) in the sediments, enhancing the sediment aging process. An appropriate frequency of water exchange (once every 5 days) could increase the abundance and diversity of bacteria and help to shape specific microorganisms. Changes in heavy metals in the surface sediments caused Firmicutes to become the most affected bacterial species by the WEF. The functional flora involved in the sulfur cycle were lesser affected by the WEF (CV, similar to 5%), whereas those involved in the nitrogen cycle were more affected (CV >17%). The findings provide guidance for scientific mariculture. |
| WOS关键词 | POLLUTION ; RISK ; AVS |
| WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Toxicology |
| 语种 | 英语 |
| WOS记录号 | WOS:001375412900001 |
| 资助机构 | Project of Shandong Province Ma-rine Aquaculture Innovation and Entrepreneurship Community ; Key Project of Shandong Provincial Natural Science Foundation |
| 源URL | [http://ir.yic.ac.cn/handle/133337/38179]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 烟台海岸带研究所_山东省海岸带环境工程技术研究中心 |
| 通讯作者 | Sheng, Yanqing |
| 作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Zone Environm Proc & Ecol Reme, Yantai 264003, Peoples R China 2.Shandong Acad Environm Planning, State Environm Protect Key Lab Land & Sea Ecol Gov, Jinan 250000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Zhaoran,Sheng, Yanqing. Water exchange frequency affects the fractions of sulfur and heavy metals in mariculture sediments[J]. MARINE ENVIRONMENTAL RESEARCH,2025,204:9. |
| APA | Li, Zhaoran,&Sheng, Yanqing.(2025).Water exchange frequency affects the fractions of sulfur and heavy metals in mariculture sediments.MARINE ENVIRONMENTAL RESEARCH,204,9. |
| MLA | Li, Zhaoran,et al."Water exchange frequency affects the fractions of sulfur and heavy metals in mariculture sediments".MARINE ENVIRONMENTAL RESEARCH 204(2025):9. |
入库方式： OAI收割
来源：烟台海岸带研究所
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