Institutional Repository of Key Laboratory of Marine Ecology & Environmental Sciences, CAS
| Application of PAC-modified kaolin to mitigate Prorocentrum donghaiense: effects on cell removal and phosphorus cycling in a laboratory setting | |
Lu, Guangyuan1,2,3; Song, Xiuxian1 ; Yu, Zhiming1; Cao, Xihua1
| |
| 2017-04-01 | |
| 发表期刊 | JOURNAL OF APPLIED PHYCOLOGY
 |
| 卷号 | 29期号:2页码:917-928 |
| 文章类型 | Article |
| 摘要 | Among various strategies for mitigating harmful algal blooms (HABs), coagulation-flocculation of algal cells by modified clay (MC) has proven to be an effective method that is widely applied in East Asia. Inorganic nutrients produced by algal detritus decomposition after an HAB are quickly released into the overlying water, which may cause second eutrophication. For environmental safety reasons, it is of critical importance to consider the fate of flocculated organic matter and clarify its effects on nutrient cycling. The present study therefore compared cell density, in vivo chlorophyll-a fluorescence, pH, and nutrient concentrations (especially phosphorus) between control (A1) and MC-treated algal bloom waters (A2) in a laboratory setting. The results showed that 0.4 g L-1 of MC removed approximately 60 % of Prorocentrum donghaiense cells (original concentration = 4.63 +/- 0.05 x 10(8) cells L-1) and delayed residual algal apoptosis. MC effectively scavenged 51.4 % of total phosphorus (TP) and 94.2 % of dissolved inorganic phosphorus (DIP) in seawater. Additionally, there was no excess DIP release from the MC-algae matrix into the water column, providing secondary eutrophication through algal degradation unlikely. This study newly demonstrated that MC treatment can significantly alter the velocities of phosphorus cycling (small scale) through two main pathways: (1) the direct coagulation-flocculation effect and (2) indirect blocking. This study provided fundamental insight into the quick downward sinking and slow decomposition of algal detritus in a laboratory setting and directly relates to natural processes occurring during HAB senescence/termination. |
| 关键词 | Phosphorus Harmful Algal Bloom (Hab) Modified Clay Mitigation Prorocentrum Donghaiense |
| DOI | 10.1007/s10811-016-0992-3 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000399241500026 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 版本 | 出版稿 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/136718 |
| 专题 | 海洋生态与环境科学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, IOCAS, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Hong Kong Univ Sci & Technol, Shenzhen Res Inst, Marine Environm Lab, Shenzhen 518000, Peoples R China |
| 第一作者单位 | 中国科学院海洋研究所 |
| 推荐引用方式 GB/T 7714 | Lu, Guangyuan,Song, Xiuxian,Yu, Zhiming,et al. Application of PAC-modified kaolin to mitigate Prorocentrum donghaiense: effects on cell removal and phosphorus cycling in a laboratory setting[J]. JOURNAL OF APPLIED PHYCOLOGY,2017,29(2):917-928. |
| APA | Lu, Guangyuan,Song, Xiuxian,Yu, Zhiming,&Cao, Xihua.(2017).Application of PAC-modified kaolin to mitigate Prorocentrum donghaiense: effects on cell removal and phosphorus cycling in a laboratory setting.JOURNAL OF APPLIED PHYCOLOGY,29(2),917-928. |
| MLA | Lu, Guangyuan,et al."Application of PAC-modified kaolin to mitigate Prorocentrum donghaiense: effects on cell removal and phosphorus cycling in a laboratory setting".JOURNAL OF APPLIED PHYCOLOGY 29.2(2017):917-928. |
| 条目包含的文件 | ||||||
| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Application of PAC-m（807KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论