气候变化领域集成服务门户(CCPortal): The Relationships Between Dissolved Zinc and Major Nutrients Phosphate and Silicate Along the GEOTRACES GA02 Transect in the West Atlantic Ocean

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DOI	10.1029/2018GB006034
	The Relationships Between Dissolved Zinc and Major Nutrients Phosphate and Silicate Along the GEOTRACES GA02 Transect in the West Atlantic Ocean
	Middag R.; de Baar H.J.W.; Bruland K.W.
发表日期	2019
ISSN	0886-6236
EISSN	1944-9224
起始页码	63
结束页码	84
卷号	33 期号:1
英文摘要	Dissolved zinc (Zn) has a nutrient-type distribution in the ocean that more closely resembles the distribution of silicate (Si) than phosphate (PO 4 ). However, Zn is a trace-nutrient and mostly present in the organic fraction of phytoplankton rather than the siliceous frustule. It has been suggested the coupling of Zn and Si is caused by the strong depletion of nutrients in the Southern Ocean, possibly combined with scavenging of Zn. Here we assess the distribution of Zn and nutrients along the conduit of southward traveling waters of northern origin and northward traveling waters of Antarctic origin to unravel the influence of various water masses and local biogeochemical processes in the Atlantic Ocean. The distribution of Zn and Si is governed by mixing such that influence of remineralization is barely distinguishable, whereas the distribution of PO 4 is influenced by both processes. The subsurface water masses that supply nutrients to the surface ocean are depleted in Zn. Indeed, the Southern Ocean water masses play a driving role, but remarkably, also subsurface water masses from northern high-latitude origin are depleted in Zn. Both northern and southern high-latitude waters have a relatively high Zn:PO 4 uptake and remineralization ratio, implying it is Zn availability and not only chronic iron limitation that leads to increased Zn uptake in the high-latitude regions. The limited supply of Zn to the surface Atlantic Ocean can explain the lack of an Atlantic Zn remineralization signal and indicates Zn might play a role in phytoplankton community composition and productivity. ©2018. American Geophysical Union. All Rights Reserved.
英文关键词	dissolved zinc; GEOTRACES; West Atlantic Ocean
语种	英语
scopus关键词	biogeochemistry; community composition; dissolved matter; mixing; phosphate (inorganic); phytoplankton; remineralization; silicate; spatial distribution; zinc; Atlantic Ocean; Atlantic Ocean (West); Southern Ocean
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129761
作者单位	Department of Ocean Systems (OCS), NIOZ Royal Netherlands Institute for Sea Research and Utrecht University, Texel, Netherlands; Department Ocean Ecosystems, University of Groningen, Netherlands; Department of Ocean Sciences and Institute of Marine Sciences, University of California Santa Cruz, Santa Cruz, CA, United States
推荐引用方式 GB/T 7714	Middag R.,de Baar H.J.W.,Bruland K.W.. The Relationships Between Dissolved Zinc and Major Nutrients Phosphate and Silicate Along the GEOTRACES GA02 Transect in the West Atlantic Ocean[J],2019,33(1).
APA	Middag R.,de Baar H.J.W.,&Bruland K.W..(2019).The Relationships Between Dissolved Zinc and Major Nutrients Phosphate and Silicate Along the GEOTRACES GA02 Transect in the West Atlantic Ocean.Global Biogeochemical Cycles,33(1).
MLA	Middag R.,et al."The Relationships Between Dissolved Zinc and Major Nutrients Phosphate and Silicate Along the GEOTRACES GA02 Transect in the West Atlantic Ocean".Global Biogeochemical Cycles 33.1(2019).