Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study
Abstract 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...
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crwiley:10.1002/jqs.1178 2024-06-02T08:13:26+00:00 Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study Chen, Muhong Li, Qianyu Zhang, Lanlan Zheng, Fan Lu, Jun Xiang, Rong Zhang, Lili Yan, Wen Chen, Zhong Xiao, Shangbin 2008 http://dx.doi.org/10.1002/jqs.1178 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1178 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1178 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Quaternary Science volume 23, issue 8, page 803-815 ISSN 0267-8179 1099-1417 journal-article 2008 crwiley https://doi.org/10.1002/jqs.1178 2024-05-03T10:45:48Z Abstract 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 © 2008 John Wiley & Sons, Ltd. Article in Journal/Newspaper Planktonic foraminifera Wiley Online Library Journal of Quaternary Science 23 8 803 815 |
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Wiley Online Library |
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English |
description |
Abstract 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 © 2008 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Chen, Muhong Li, Qianyu Zhang, Lanlan Zheng, Fan Lu, Jun Xiang, Rong Zhang, Lili Yan, Wen Chen, Zhong Xiao, Shangbin |
spellingShingle |
Chen, Muhong Li, Qianyu Zhang, Lanlan Zheng, Fan Lu, Jun Xiang, Rong Zhang, Lili Yan, Wen Chen, Zhong Xiao, Shangbin Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study |
author_facet |
Chen, Muhong Li, Qianyu Zhang, Lanlan Zheng, Fan Lu, Jun Xiang, Rong Zhang, Lili Yan, Wen Chen, Zhong Xiao, Shangbin |
author_sort |
Chen, Muhong |
title |
Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study |
title_short |
Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study |
title_full |
Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study |
title_fullStr |
Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study |
title_full_unstemmed |
Systematic biotic responses to palaeoenvironmental change in the Late Pleistocene southern South China Sea: a preliminary study |
title_sort |
systematic biotic responses to palaeoenvironmental change in the late pleistocene southern south china sea: a preliminary study |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1002/jqs.1178 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjqs.1178 https://onlinelibrary.wiley.com/doi/pdf/10.1002/jqs.1178 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Journal of Quaternary Science volume 23, issue 8, page 803-815 ISSN 0267-8179 1099-1417 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/jqs.1178 |
container_title |
Journal of Quaternary Science |
container_volume |
23 |
container_issue |
8 |
container_start_page |
803 |
op_container_end_page |
815 |
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1800736936184250368 |