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Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study
Chen, MH; Li, QY; Zhang, LL; Zheng, F; Lu, J; Xiang, R; Yan, W; Chen, Z; Xiao, SB; mhchen@scsio.ac.cn
2008
Source PublicationJOURNAL OF QUATERNARY SCIENCE
ISSN0267-8179
Volume23Issue:8Pages:803-815
AbstractOxygen 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.
Department[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
KeywordPalaeoenvironment Palaeoecology Biological Element Terrigenous Materials Southern South China Sea
Subject AreaGeosciences, Multidisciplinary ; Paleontology
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Indexed Bysci
Funding Project海洋地质
WOS IDWOS:000261973300008
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/4516
Collection中科院边缘海地质重点实验室
Corresponding Authormhchen@scsio.ac.cn
Recommended Citation
GB/T 7714
Chen, MH,Li, QY,Zhang, LL,et al. Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study[J]. JOURNAL OF QUATERNARY SCIENCE,2008,23(8):803-815.
APA Chen, MH.,Li, QY.,Zhang, LL.,Zheng, F.,Lu, J.,...&mhchen@scsio.ac.cn.(2008).Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study.JOURNAL OF QUATERNARY SCIENCE,23(8),803-815.
MLA Chen, MH,et al."Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study".JOURNAL OF QUATERNARY SCIENCE 23.8(2008):803-815.
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