Historical evolution of hypoxia in the East China Sea off the Changjiang (Yangtze River) estuary for the last similar to 13,000 years: Evidence from the benthic foraminiferal community

doi:10.1016/j.csr.2014.02.013

	Historical evolution of hypoxia in the East China Sea off the Changjiang (Yangtze River) estuary for the last similar to 13,000 years: Evidence from the benthic foraminiferal community
	Wang, Feifei 1; Liu, Jian 1; Qiu, Jiandong 1; Wang, Hong 1
刊名	CONTINENTAL SHELF RESEARCH
	2014
卷号	90 页码:151-162
关键词	Changjiang Hypoxia Benthic foraminifera Paleoenvironment
ISSN号	0278-4343
DOI	10.1016/j.csr.2014.02.013
英文摘要	The records of benthic foraminifera and lithology of a 35.60-m-long core in the East China Sea Off the Changjiang (Yangtze River) estuary were used to decipher the paleoenvironmental changes over the last 13,000 years. The result suggests three stages of environmental evolution: a littoral environment dominated by tide influence in the period of Younger Dryas (YD) (about 13,000-11,500 cal yr BP), a nearshore to shallow-sea environment in the early-mid Holocene (11,500-4600 cal yr BP), and a shallow-sea environment with significant hypoxia since the last 4600 years. The alternation of the low-oxygen foraminiferal assemblages (LOFA) and oxic foraminiferal assemblages (OFA) suggests a weakening hypoxia condition during 4600-2000 cal yr BP, which may be linked to factors such as the weakening of Taiwan Warm Current (TWC), a stronger East Asian Summer Monsoon (EASM), a moderate water depth with stable sea-level and sufficient supply of terrigenous organic materials. Together with the above mentioned factors, human activities might explain the low-oxygen conditions over the past 400 years. However, the hypoxic process was discontinued during the period of 0.6-0.4 cal ka BP, possibly due to the cold climate during Little Ice Age (LIA), which weakened EASM and reduced Total Solar Irradiance (TSI). This study confirms that the species of Epistominella naraensis, Bolivina spp., Bulimina marginate and Ammonia convexidorsa could be used as indicators for hypoxia while the Quinqueloculina spp. as a sensitive indicator of bottom oxygen levels at the core site. (C) 2014 Elsevier Ltd. All rights reserved.
学科主题	第四纪地质
WOS关键词	BOTTOM-WATER OXYGENATION ; INNER CONTINENTAL-SHELF ; ORGANIC-CARBON FLUX ; ASIAN MONSOON ; YELLOW-RIVER ; MISSISSIPPI RIVER ; CLIMATE-CHANGE ; HOLOCENE ; RECORD ; DELTA
WOS研究方向	Oceanography
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000347606000016
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/40299]
专题	中国地质科学院
作者单位	1.Minist Land & Resources, Key Lab Marine Hydrocarbon Resources & Environm G, Qingdao 266071, Peoples R China 2.Qingdao Inst Marine Geol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Wang, Feifei,Liu, Jian,Qiu, Jiandong,et al. Historical evolution of hypoxia in the East China Sea off the Changjiang (Yangtze River) estuary for the last similar to 13,000 years: Evidence from the benthic foraminiferal community[J]. CONTINENTAL SHELF RESEARCH,2014,90:151-162.
APA	Wang, Feifei,Liu, Jian,Qiu, Jiandong,&Wang, Hong.(2014).Historical evolution of hypoxia in the East China Sea off the Changjiang (Yangtze River) estuary for the last similar to 13,000 years: Evidence from the benthic foraminiferal community.CONTINENTAL SHELF RESEARCH,90,151-162.
MLA	Wang, Feifei,et al."Historical evolution of hypoxia in the East China Sea off the Changjiang (Yangtze River) estuary for the last similar to 13,000 years: Evidence from the benthic foraminiferal community".CONTINENTAL SHELF RESEARCH 90(2014):151-162.