Seawater stratification vs. plankton for oligotrophic mechanism: A case study of M4 seamount area in the Western Pacific Ocean

doi:10.1016/j.marenvres.2021.105400

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生态与环境科学重点实验室

	Seawater stratification vs. plankton for oligotrophic mechanism: A case study of M4 seamount area in the Western Pacific Ocean
	Ma, Jun 1,2,3,4; Song, Jinming 1,2,3,4; Li, Xuegang 1,2,3,4; Wang, Qidong 1,2,3,4; Sun, Xiaoxia 1,2,3,4; Zhang, Wuchang 1,2,3,4; Zhong, Guorong 1,2,3,4
刊名	MARINE ENVIRONMENTAL RESEARCH
	2021-07-01
卷号	169 页码:8
关键词	Oligotrophic sea area Tropical Western Pacific Ocean Seamount Thermocline and high-salt area Synechococcus and bacteria
ISSN号	0141-1136
DOI	10.1016/j.marenvres.2021.105400
通讯作者	Song, Jinming(jmsong@qdio.ac.cn) ; Li, Xuegang(lixuegang@qdio.ac.cn)
英文摘要	Oligotrophic sea area mainly distributes in tropical and subtropical ocean, which have a profound impact on the marine material cycle and the structure of biological community. Based on the comprehensive survey in M4 seamount area of the Tropical Western Pacific Ocean in August 2017, the nutrients characteristics were explained, the formation mechanism of oligotrophic characteristics in this region was explored, and the influence of M4 seamount on oligotrophic sea area was analyzed. The results showed that the M4 seamount area is a typical oligotrophic sea area. In the water column of 0-100 m, the nutrients levels are extremely low, and NO3-N, PO4-P and SiO3-Si are lower than 0.55, 0.15 and 1.75 mu mol/L, respectively; in the water column of 100-500 m, the nutrients concentrations rise rapidly, forming nutriclines. Seawater stratification is one of the main reasons for the formation of oligotrophic characteristics in this area. The thermocline in the water column of 100-500 m and the high-salt area in the water column of 100-230 m form a dual effect, which hinders the upward transport of waters with high nutrients concentrations at the bottom. In addition, Synechococcus and bacteria grow and multiply in a large amount in the water column of 0-100 m, absorb and utilize nutrients, and aggravate the oligotrophic characteristics of this area. There are significant upwellings near the summit of the M4 seamount, which promotes the waters with high nutrients concentrations at the bottom to break through the barriers of the thermocline and high-salt area and to transport upwards into the euphotic layer, which can be better utilized by phytoplankton. This study showed that seamounts may have an important effect on improving the oligotrophic characteristics of local sea areas, and then promote the growth of phytoplankton.
资助项目	Science & Technology Basic Resources Investigation Program of China[2017FY100802] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19060401] ; National Natural Science Foundation of China[91958103] ; China Postdoctoral Science Foundation[2021M693207]
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Toxicology
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000672848900001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/176975]
专题	海洋研究所_海洋生态与环境科学重点实验室
通讯作者	Song, Jinming; Li, Xuegang
作者单位	1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Ma, Jun,Song, Jinming,Li, Xuegang,et al. Seawater stratification vs. plankton for oligotrophic mechanism: A case study of M4 seamount area in the Western Pacific Ocean[J]. MARINE ENVIRONMENTAL RESEARCH,2021,169:8.
APA	Ma, Jun.,Song, Jinming.,Li, Xuegang.,Wang, Qidong.,Sun, Xiaoxia.,...&Zhong, Guorong.(2021).Seawater stratification vs. plankton for oligotrophic mechanism: A case study of M4 seamount area in the Western Pacific Ocean.MARINE ENVIRONMENTAL RESEARCH,169,8.
MLA	Ma, Jun,et al."Seawater stratification vs. plankton for oligotrophic mechanism: A case study of M4 seamount area in the Western Pacific Ocean".MARINE ENVIRONMENTAL RESEARCH 169(2021):8.