Dinocyst microlaminations and freshwater "red tides" recorded in Lake Xiaolongwan, northeastern China
文献类型：期刊论文
| 作者 | Chu, Guoqiang1; Sun, Qing2; Rioual, Patrick1; Boltovskoy, Andres3; Liu, Qiang1; Sun, Peiqi4; Han, Jintai1; Liu, Jiaqi1 |
| 刊名 | JOURNAL OF PALEOLIMNOLOGY
 |
| 出版日期 | 2008-04-01 |
| 卷号 | 39期号:3页码:319-333 |
| 关键词 | dinocyst microlamination sediment trap dinocyst flux radiometric dating red tide history |
| ISSN号 | 0921-2728 |
| DOI | 10.1007/s10933-007-9106-1 |
| 文献子类 | Article |
| 英文摘要 | We reported a special type of lamination formed in the sediments of Lake Xiaolongwan, northeastern China. The lamination consists of light- and brown-colored laminate couplets in the thin sections. The brown-colored layer is composed mainly of dinoflagellate cysts. The grey-colored layer consists of other organic and siliceous matter (plant detritus, diatoms, chrysophyte cysts) and clastics. Preliminary sediment trap results show that a distinct peak of dinocyst flux occurred in November. The dinocyst flux maximum also corresponds to the peaks of diatom flux and chrysophyte stomatocyst flux. These suggest that "red tide blooms" occur in this freshwater lake. We speculate that the dinocyst flux maximum could be related to autumn overturn due to increased nutrients, and the availability of cysts for germination from the lake bottom. Additionally, it may also reflect increasing dissolved organic matter after leaf fall. An independent chronology derived from (137)Cs and (210) Pb shows a good agreement with counted laminations. From the sediment trap data and the independent chronology data, the dinocyst microlaminae appear to be annually laminated, and probably could be called dinocyst varves. Although vegetative (thecate stage) cells of Peridinium volzii and Ceratium furcoides are found in the water samples, it is not possible to relate the dinocysts to these two dinoflagellate species. Based on morphological and ecological analyses, we suggested that they have affinities with species of Peridinium (sensu lato), most probably to P. inconspicuum. Detailed investigations should be carried out to understand the red tide history in this freshwater lake. Annually laminated dinocyst microlayers in freshwater and marine sediments not only provide an uncommon archive for understanding the history of red tides and harmful algal blooms, and why and how certain species periodically bloom over several thousands years, but also provide important records of paleoenvironmental and paleoclimatic changes at seasonal to annual resolution. |
| WOS关键词 | DINOFLAGELLATE CYST ASSEMBLAGES ; SEXUAL REPRODUCTION ; PERIDINIUM-CINCTUM ; VARVED SEDIMENTS ; ENCLOSURE EXPERIMENTS ; ENVIRONMENTAL-FACTORS ; LAMINATED SEDIMENTS ; SPECIES COMPOSITION ; VOLZII DINOPHYCEAE ; JILIN PROVINCE |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Marine & Freshwater Biology |
| 语种 | 英语 |
| WOS记录号 | WOS:000254237500003 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/69010]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Chu, Guoqiang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Natl Res Ctr Geoanal, Beijing, Peoples R China 3.Museo La Plata, Dept Cientifico Ficol, RA-1900 La Plata, Argentina 4.Longwan Natl Nat Protect Bur, Huinan 135102, Jilin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chu, Guoqiang,Sun, Qing,Rioual, Patrick,et al. Dinocyst microlaminations and freshwater "red tides" recorded in Lake Xiaolongwan, northeastern China[J]. JOURNAL OF PALEOLIMNOLOGY,2008,39(3):319-333. |
| APA | Chu, Guoqiang.,Sun, Qing.,Rioual, Patrick.,Boltovskoy, Andres.,Liu, Qiang.,...&Liu, Jiaqi.(2008).Dinocyst microlaminations and freshwater "red tides" recorded in Lake Xiaolongwan, northeastern China.JOURNAL OF PALEOLIMNOLOGY,39(3),319-333. |
| MLA | Chu, Guoqiang,et al."Dinocyst microlaminations and freshwater "red tides" recorded in Lake Xiaolongwan, northeastern China".JOURNAL OF PALEOLIMNOLOGY 39.3(2008):319-333. |
入库方式： OAI收割
来源：地质与地球物理研究所
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