Long-term changes in sedimentary diatom assemblages and their environmental implications in the Changjiang(Yangtze) River estuary, China
文献类型：CNKI期刊论文
| 作者 | Cheng FJ(程芳晋); Yu ZM(俞志明) ; Song XX(宋秀贤)
|
| 发表日期 | 2014-01-15 |
| 出处 | Chinese Journal of Oceanology and Limnology
 |
| 关键词 | diatom assemblages Changjiang River estuary East China Sea environmental implications |
| 英文摘要 | Long-term data on diatom assemblages in a sediment core(60 cm) obtained from the Changjiang(Yangtze) River estuary were analyzed in order to assess the environmental changes that took place in the approximately 38 years(as determined by 210 Pb measurements), i.e., between 1974 and 2012, of sediment accumulation. From the sediment core, 62 diatom taxa and genera were identifi ed. The diatom biomass in the core generally increased beginning in the mid-1990s(core depth: 35 cm), accompanied by a shift in the dominant species from Podosira stelliger and two species of Cyclotella( C. stylorum and C. striata) to Paralia sulcata, three species of Thalassiosira( T. eccentria, T. oestrupii, and T. excentrica), Actinoptychus undulates, and Thalassionema nitzschioides. The changes in both species diversity and abundance suggested that since the 1980s the estuary has undergone extensive eutrophication. This conclusion was supported by the increased proportion of planktonic species, another indicator of high nutrients inputs, in the Changjiang River estuary. |
| 文献子类 | CNKI期刊论文 |
| 资助机构 | Supported by the National Basic Research Program of China(973 Program)(No.2010CB428706) ; the Funds for Creative Research Groups of China(No.41121064) |
| 卷 | v.32期:01页:157-163 |
| 语种 | 英文; |
| 分类号 | X52 |
| ISSN号 | 0254-4059 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/190610]  |
| 专题 | 中国科学院海洋研究所 |
| 作者单位 | 1.KeyLaboratoryofMarineEcologyandEnvironmentalSciences,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences |
| 推荐引用方式 GB/T 7714 | Cheng FJ,Yu ZM,Song XX. Long-term changes in sedimentary diatom assemblages and their environmental implications in the Changjiang(Yangtze) River estuary, China. 2014. |
入库方式： OAI收割
来源：海洋研究所
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