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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
DOI10.1007/s00343-014-3133-3
收录类别SCI
语种英语
WOS记录号WOS:000332003500018
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
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
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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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