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学科主题: Oceanography
题名: Recent oxygen depletion in the Pearl River Estuary, South China: geochemical and microfaunal evidence
作者: Ye, F ; Huang, XP ; Zhang, X ; Zhang, DW ; Zeng, YY ; Tian, L
通讯作者: xphuang@scsio.ac.cn
关键词: Oxygen depletion ; Eutrophication ; Sediments ; Geochemistry ; Benthic foraminifera ; Pearl River Estuary
刊名: JOURNAL OF OCEANOGRAPHY
发表日期: 2012
卷: 68, 期:3, 页:387-400
部门归属: [Ye, Feng; Huang, Xiaoping; Zhang, Xia; Zhang, Dawen; Zeng, Yanyi; Tian, Lei] Chinese Acad Sci, S China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China; [Ye, Feng; Zeng, Yanyi; Tian, Lei] Chinese Acad Sci, Grad Univ, Beijing, Peoples R China
项目归属: LTO
摘要: We examined a suite of geochemical and microfaunal indicators in Pb-210-dated sediment cores from the Pearl River Estuary, South China, to determine the historical course of oxygen conditions. The results revealed a substantial increase in nutrient elements and primary production in the sediment over the last 3 decades, which could be interpreted as a recent increase in the extent of eutrophic condition in the Pearl River Estuary. Furthermore, total foraminifers decreased abruptly in abundance while the species Ammonia beccarii, which is tolerant of low-oxygen conditions and high organic fluxes, showed a marked increase in relative abundance after the 1970s. These faunal changes implied that significant deterioration had occurred in the bottom water oxygen conditions since the late 1970s. This degradation could be caused by the increased nutrient and organic loading to the estuarine system, which is likely related to the rapid urbanization and industrial development in the Pearl River Delta during this period.
语种: 英语
WOS记录号: WOS:000307296300002
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.scsio.ac.cn/handle/344004/10159
Appears in Collections:热带海洋环境国家重点实验室(LTO)_期刊论文

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Recommended Citation:
Ye, F; Huang, XP; Zhang, X; Zhang, DW; Zeng, YY; Tian, L.Recent oxygen depletion in the Pearl River Estuary, South China: geochemical and microfaunal evidence,JOURNAL OF OCEANOGRAPHY,2012,68(3):387-400
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