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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
Source PublicationCHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
Volume32Issue:1Pages:155-161
SubtypeArticle
AbstractLong-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.
KeywordDiatom Assemblages Changjiang River Estuary East China Sea Environmental Implications
Subject AreaMarine & Freshwater Biology ; Oceanography
DOI10.1007/s00343-014-3133-3
Indexed BySCI
Language英语
WOS IDWOS:000332003500018
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/24026
Collection海洋生态与环境科学重点实验室
Corresponding AuthorYu, ZM (reprint author), Chinese Acad Sci, Key Lab Marine Ecol & Environm Sci, Inst Oceanol, Qingdao 266071, Peoples R China.
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
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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