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学科主题: Geosciences, Multidisciplinary; Paleontology
题名: Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study
作者: Chen, MH ; Li, QY ; Zhang, LL ; Zheng, F ; Lu, J ; Xiang, R ; Zhang, LL ; Yan, W ; Chen, Z ; Xiao, SB
通讯作者: mhchen@scsio.ac.cn
关键词: palaeoenvironment ; palaeoecology ; biological element ; terrigenous materials ; Southern South China Sea
刊名: JOURNAL OF QUATERNARY SCIENCE
发表日期: 2008
卷: 23, 期:8, 页:803-815
收录类别: sci
部门归属: [Chen, Muhong; Zhang, Lanlan; Zheng, Fan; Lu, Jun; Xiang, Rong; Zhang, Lili; Yan, Wen; Chen, Zhong] Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Guangdong, Peoples R China; [Li, Qianyu] Tongji Univ, State Key Lab Marine Geol, Shanghai 200092, Peoples R China; [Xiao, Shangbin] China Three Gorges Univ, Yichang, Peoples R China
项目归属: 海洋地质
摘要: Oxygen and carbon isotopes from the planktonic foraminifer Globigerinoides sacculifer, trace element contents, calcium carbonate, biogenic silica, grain size, and abundances of diatoms, radiolarians and foraminifera in a deep-sea core from the southwestern South China Sea were analysed to investigate the response of various marine ecological communities to environmental changes over the last 200 ka. The synthesised results show that the quality of the palaeoecological environment for biological growth is primarily affected by nutrient Supply and terrigenous disturbance. Ba and P are important nutrient elements for the growth of diatoms, radiolarians and planktonic foraminifera. Together with dissolved silica and calcium carbonate in sea water, these elements may control microbiotic development. However, variations in Fe content appear to affect diatom and radiolarian abundance. Optimal biotic growth Occurs when nutrients are abundant and when there is minimal terrigenous disturbance. Biotic growth decreases when sea water is highly oligotrophic and terrigenous input is high. Maximum biological growth occurred in the mid Holocene, but deteriorated soon afterwards owing to increased terrigenous input, causing a decrease of biological abundance and productivity in the late Holocene. The results also indicate how the Toba volcanic eruption ca. 74 ka ago contributed to changing the ecological environment in the southern South China Sea. Copyright (C) 2008 John Wiley & Sons, Ltd.
原文出处: 查看原文
WOS记录号: WOS:000261973300008
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内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/4516
Appears in Collections:中科院边缘海地质重点实验室_期刊论文

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Recommended Citation:
Chen, MH; Li, QY; Zhang, LL; Zheng, F; Lu, J; Xiang, R; Zhang, LL; Yan, W; Chen, Z; Xiao, SB.Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study,JOURNAL OF QUATERNARY SCIENCE,2008,23(8):803-815
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