Paleoenvironmental analyses of surface sediments from the Bohai Sea, China, using diatoms and silicoflagellates
Liu, DY; Liu, LX; Di, BP; Wang, YJ; Wang, YN; 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
发表期刊MARINE MICROPALEONTOLOGY
ISSN0377-8398
2015
卷号114页码:46-54
关键词Diatoms Silicoflagellates Indicative Species Bohai Sea Yellow River
DOI10.1016/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
被引频次:13[WOS]   [WOS记录]     [WOS相关记录]
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
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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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