Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
Paleoenvironmental analyses of surface sediments from the Bohai Sea, China, using diatoms and silicoflagellates | |
Liu, DY![]() ![]() ![]() | |
发表期刊 | MARINE MICROPALEONTOLOGY
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ISSN | 0377-8398 |
2015 | |
卷号 | 114页码:46-54 |
关键词 | Diatoms Silicoflagellates Indicative Species Bohai Sea Yellow River |
DOI | 10.1016/j.marmicro.2014.11.002 |
产权排序 | [Liu, Dongyan; Liu, Lixue; Di, Baoping; Wang, Yujue; Wang, Yanna] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China; [Liu, Lixue; Wang, Yanna] Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
作者部门 | 中科院海岸带环境过程与生态修复重点实验室 |
英文摘要 | Diatom and silicoflagellate fossils from surface sediments were analyzed at 63 sites in the Bohai Sea. Their spatial variations of the fossils were indicative of past environmental conditions, hydrodynamics, and the interaction of the Yellow Sea intrusion and Yellow River discharge into the Bohai Sea. In total, 162 taxa were identified. Higher species diversity and lower abundance occurred near the mouth of the Yellow River and Laizhou Bay, while lower species diversity and higher abundance occurred in the Central Bohai Sea and Bohai Strait. The spatial differences between fossil diversity and abundance are strongly related to the freshwater and sediment inputs from the Yellow River; lower salinity provides a diverse habitat for brackish and marine species, while a higher deposition rate can dilute the fossil concentrations. Three distinct biofacies representing the Laizhou Bay, Central Bohai Sea and Bohai Strait were classified after principal component analysis. The dominant species along the salinity gradient shifted from Paralia sulcata in the Bohai Strait to Cyclotella stylorum and Dictyocha messanensis in the Laizhou Bay, while a mixing zone existed in the Central Bohai Sea. The canonical correspondence analysis between major species and environmental factors indicated a relationship between P. sulcata and the Yellow Sea intrusion, with significant positive correlations being observed between salinity gradient, water depth and autumn temperature. In comparison, C. stylorum and D. messanensis were related to the discharge of the Yellow River, having significant positive correlations with the low-salinity and nutrient-rich environment. (C) 2014 Elsevier B.V. All rights reserved.; Diatom and silicoflagellate fossils from surface sediments were analyzed at 63 sites in the Bohai Sea. Their spatial variations of the fossils were indicative of past environmental conditions, hydrodynamics, and the interaction of the Yellow Sea intrusion and Yellow River discharge into the Bohai Sea. In total, 162 taxa were identified. Higher species diversity and lower abundance occurred near the mouth of the Yellow River and Laizhou Bay, while lower species diversity and higher abundance occurred in the Central Bohai Sea and Bohai Strait. The spatial differences between fossil diversity and abundance are strongly related to the freshwater and sediment inputs from the Yellow River; lower salinity provides a diverse habitat for brackish and marine species, while a higher deposition rate can dilute the fossil concentrations. Three distinct biofacies representing the Laizhou Bay, Central Bohai Sea and Bohai Strait were classified after principal component analysis. The dominant species along the salinity gradient shifted from Paralia sulcata in the Bohai Strait to Cyclotella stylorum and Dictyocha messanensis in the Laizhou Bay, while a mixing zone existed in the Central Bohai Sea. The canonical correspondence analysis between major species and environmental factors indicated a relationship between P. sulcata and the Yellow Sea intrusion, with significant positive correlations being observed between salinity gradient, water depth and autumn temperature. In comparison, C. stylorum and D. messanensis were related to the discharge of the Yellow River, having significant positive correlations with the low-salinity and nutrient-rich environment. (C) 2014 Elsevier B.V. All rights reserved. |
文章类型 | Article |
资助机构 | Paleontology |
收录类别 | SCI |
语种 | 英语 |
关键词[WOS] | YELLOW SEA ; EAST CHINA ; ASSEMBLAGES ; OCEAN ; TEMPERATURE ; VARIABILITY ; DISCHARGE ; SALINITY ; PATTERNS ; BAY |
研究领域[WOS] | Paleontology |
WOS记录号 | WOS:000350185100004 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.yic.ac.cn/handle/133337/8671 |
专题 | 中国科学院海岸带环境过程与生态修复重点实验室 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室 |
通讯作者 | Liu, DY (reprint author), Chinese Acad Sci, Yantai Inst Coastal Zone Res, 17th Chunhui Rd, Laishan District 264003, Yantai, Peoples R China. dyliu@yic.ac.cn |
推荐引用方式 GB/T 7714 | Liu, DY,Liu, LX,Di, BP,et al. Paleoenvironmental analyses of surface sediments from the Bohai Sea, China, using diatoms and silicoflagellates[J]. MARINE MICROPALEONTOLOGY,2015,114:46-54. |
APA | Liu, DY,Liu, LX,Di, BP,Wang, YJ,Wang, YN,&Liu, DY .(2015).Paleoenvironmental analyses of surface sediments from the Bohai Sea, China, using diatoms and silicoflagellates.MARINE MICROPALEONTOLOGY,114,46-54. |
MLA | Liu, DY,et al."Paleoenvironmental analyses of surface sediments from the Bohai Sea, China, using diatoms and silicoflagellates".MARINE MICROPALEONTOLOGY 114(2015):46-54. |
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