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Long-term changes in sedimentary diatom assemblages and their environmental implications in the Changjiang (Yangtze) River estuary, China | |
Cheng Fangjin1,2; Yu Zhiming1; Song Xiuxian1; Yu, ZM (reprint author), Chinese Acad Sci, Key Lab Marine Ecol & Environm Sci, Inst Oceanol, Qingdao 266071, Peoples R China. | |
2014 | |
发表期刊 | CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY |
卷号 | 32期号:1页码:155-161 |
文章类型 | Article |
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 Pb-210 measurements), i.e., between 1974 and 2012, of sediment accumulation. From the sediment core, 62 diatom taxa and genera were identified. 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. |
关键词 | Diatom Assemblages Changjiang River Estuary East China Sea Environmental Implications |
学科领域 | Marine & Freshwater Biology ; Oceanography |
DOI | 10.1007/s00343-014-3133-3 |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000332003500018 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.qdio.ac.cn/handle/337002/24026 |
专题 | 海洋生态与环境科学重点实验室 |
通讯作者 | Yu, ZM (reprint author), Chinese Acad Sci, Key Lab Marine Ecol & Environm Sci, Inst Oceanol, Qingdao 266071, Peoples R China. |
作者单位 | 1.Chinese Acad Sci, Key Lab Marine Ecol & Environm Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, 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 | Cheng Fangjin,Yu Zhiming,Song Xiuxian,et al. Long-term changes in sedimentary diatom assemblages and their environmental implications in the Changjiang (Yangtze) River estuary, China[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2014,32(1):155-161. |
APA | Cheng Fangjin,Yu Zhiming,Song Xiuxian,&Yu, ZM .(2014).Long-term changes in sedimentary diatom assemblages and their environmental implications in the Changjiang (Yangtze) River estuary, China.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,32(1),155-161. |
MLA | Cheng Fangjin,et al."Long-term changes in sedimentary diatom assemblages and their environmental implications in the Changjiang (Yangtze) River estuary, China".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 32.1(2014):155-161. |
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