Recent oxygen depletion in the Pearl River Estuary, South China: geochemical and microfaunal evidence

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Recent oxygen depletion in the Pearl River Estuary, South China: geochemical and microfaunal evidence
	Ye, F ; Huang, XP ; Zhang, X ; Zhang, DW ; Zeng, YY ; Tian, L
刊名	JOURNAL OF OCEANOGRAPHY
	2012
卷号	68 期号:3 页码:387-400
关键词	Oxygen depletion Eutrophication Sediments Geochemistry Benthic foraminifera Pearl River Estuary
ISSN号	0916-8370
通讯作者	xphuang@scsio.ac.cn
中文摘要	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.
学科主题	Oceanography
语种	英语
WOS记录号	WOS:000307296300002
公开日期	2013-08-28
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/10159]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Ye, F,Huang, XP,Zhang, X,et al. Recent oxygen depletion in the Pearl River Estuary, South China: geochemical and microfaunal evidence[J]. JOURNAL OF OCEANOGRAPHY,2012,68(3):387-400.
APA	Ye, F,Huang, XP,Zhang, X,Zhang, DW,Zeng, YY,&Tian, L.(2012).Recent oxygen depletion in the Pearl River Estuary, South China: geochemical and microfaunal evidence.JOURNAL OF OCEANOGRAPHY,68(3),387-400.
MLA	Ye, F,et al."Recent oxygen depletion in the Pearl River Estuary, South China: geochemical and microfaunal evidence".JOURNAL OF OCEANOGRAPHY 68.3(2012):387-400.