IOCAS-IR  > 海洋生态与环境科学重点实验室
The environmental implication of diatom fossils in the surface sediment of the Changjiang River estuary (CRE) and its adjacent area
Fan Xin1,2,3; Cheng Fangjin4; Yu Zhiming1,2,3; Song Xiuxian1,2,3
2019-03-01
Source PublicationJOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN2096-5508
Volume37Issue:2Pages:552-567
Corresponding AuthorSong Xiuxian(songxx@qdio.ac.cn)
AbstractIn order to depict the distribution of diatom fossils in surface sediments and to establish a reliable reference data for further paleoenvironmental study in the Changjiang (Yangtze) River estuary and its adjacent waters, the diatom fossils from 34 surface sediment samples and their relationship with environmental variables were analyzed by principal component analysis and redundancy correspondence analysis. The diversity and abundance of diatom fossils were analyzed. Some annual average parameters of the overlying water (salinity, temperature, turbidity, dissolved oxygen, depth, dissolved inorganic nitrogen, dissolved inorganic phosphate and dissolved inorganic silicate) were measured at each sampling site. A total of 113 diatom taxa and one silicoflagellate species were identified in the investigation area. Diatom fossils were better preserved in fine sediments. The absolute abundance of diatom fossils did not significantly differ between inshore and offshore areas, the species diversity decreased from inshore to offshore. This may be because high nutrients and low salinity promoted the growth of more brackish species in coastal waters. The diatom taxa were divided into three groups, on the basis of their response and indication to environmental changes. For example, Actinocyclus ehrenbergii and Cyclotella stylorum were dominant in coastal waters (Group 1 and Group 3) with high nutrients and low salinity; the relative abundances of Paralia sulcata and Podosira stelliger were significantly higher in offshore sites (Group 2, average 39.5%), which were characterized by high salinity and deep water. Four environmental variables (salinity, dissolved inorganic nitrogen, temperature and water depth) explained the composition and distribution of diatom taxa independently (P < 0.05), this finding can be applied in further paleoenvironmental reconstruction research in this area.
Keyworddiatom fossils Changjiang River estuary surface sediments environmental variables
DOI10.1007/s00343-019-8037-9
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[41506142] ; NSFC-Shandong Joint Fund for Marine Science Research Centers[U1606404] ; Sino-Australian Centre for Healthy Coasts of National Key Research and Development Plan[2016YFE0101500]
WOS Research AreaMarine & Freshwater Biology ; Oceanography
WOS SubjectLimnology ; Oceanography
WOS IDWOS:000464895600015
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/161186
Collection海洋生态与环境科学重点实验室
Corresponding AuthorSong Xiuxian
Affiliation1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China
2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Environm Monitoring Ctr Qingdao, Qingdao 266003, Shandong, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Fan Xin,Cheng Fangjin,Yu Zhiming,et al. The environmental implication of diatom fossils in the surface sediment of the Changjiang River estuary (CRE) and its adjacent area[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2019,37(2):552-567.
APA Fan Xin,Cheng Fangjin,Yu Zhiming,&Song Xiuxian.(2019).The environmental implication of diatom fossils in the surface sediment of the Changjiang River estuary (CRE) and its adjacent area.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,37(2),552-567.
MLA Fan Xin,et al."The environmental implication of diatom fossils in the surface sediment of the Changjiang River estuary (CRE) and its adjacent area".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 37.2(2019):552-567.
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