globalchange  > 气候变化事实与影响
DOI: 10.1002/2014GB004903
Scopus记录号: 2-s2.0-84920945440
论文题名:
Contrasting biogeochemical cycles of cobalt in the surface western Atlantic Ocean
作者: Dulaquais G; , Boye M; , Middag R; , Owens S; , Puigcorbe V; , Buesseler K; , Masqué P; , De Baar H; J; W; , Carton X
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2014
卷: 28, 期:12
起始页码: 1387
结束页码: 1412
语种: 英语
英文关键词: Atlantic Ocean ; biogeochemistry ; Chemical Oceanography ; cobalt ; GEOTRACES
Scopus关键词: atmospheric deposition ; biogeochemical cycle ; chemical oceanography ; cobalt ; concentration (composition) ; dissolved matter ; environmental factor ; gyre ; nutrient uptake ; phosphate ; recycling ; water column ; Amazon River ; Atlantic Ocean
英文摘要: Dissolved cobalt (DCo; <0.2μm; 14 to 93 pM) and the apparent particulate cobalt (PCo; >0.2μm; <1 to 15 pM) were determined in the upper water column (<1000m) of the western Atlantic Ocean along the GEOTRACES-A02 section (64N to 50S). The lowest DCo concentrations, typical of a nutrient-type distribution were observed in surface waters of the subtropical domains. Strong linear relationships between DCo and phosphate (P) as well as meridional gradients of decreasing DCo from high latitudes were characterized and both linked to the Co biological requirement. External sources such as the Amazon and the atmospheric deposition were found to contribute significantly (>10%) to the DCo stock of the mixed layer in the equatorial and north subtropical domains. Biotic and abiotic processes as well as the physical terms involved in the biogeochemical cycle of Co were defined and estimated. This allowed establishing the first global budget of DCo for the upper 100m in the western Atlantic. The biological DCo uptake flux was the dominant sink along the section, as reflected by the overall nutrient-type behavior of DCo. The regeneration varied widely within the different biogeochemical domains, accounting for 10% of the DCo-uptake rate in the subarctic gyre and for up to 85% in southern subtropical domain. These findings demonstrated that the regeneration is likely the prevailing source of DCo in the surface waters of the western Atlantic, except in the subpolar domains where physically driven sources can sustain the DCo biological requirement. Key Points Surface biogeochemical cycle of cobalt assessed in the western Atlantic OceanRecycling sustain the biological requirement for cobalt in subtropical domainsThe atmospheric and Amazon inputs affect the cobalt distribution ©2014. American Geophysical Union. All Rights Reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77529
Appears in Collections:气候变化事实与影响

Files in This Item:

There are no files associated with this item.


作者单位: Laboratoire des Sciences de l'Environnement Marin UMR6539, Institut Universitaire Européen de la Mer, Technopôle Brest Iroise, Plouzané, France; Department of Marine Chemistry and Geology, Royal Netherlands Institute for Sea Research, Den Burg, Netherlands; Department of Chemistry, University of Otago, Dunedin, New Zealand; Woods Hole Oceanographic Institution Massachusetts, Woods Hole, United States; Institut de Ciencia i Tecnologia Ambientals, Department of Physics, Univertsitat Atonoma de Barcelona, Bellaterra, Spain; Oceans Institute, School of Physics, University of Western Australia Western Australia, Crawley, Australia; School of Natural Sciences, Centre for Marine Ecosystems Research, Edith Cowan University Western Australia, Joondalup, Australia; Laboratoire de Physique des Océans, Université de Bretagne Occidentale-UFR Sciences, Brest, France

Recommended Citation:
Dulaquais G,, Boye M,, Middag R,et al. Contrasting biogeochemical cycles of cobalt in the surface western Atlantic Ocean[J]. Global Biogeochemical Cycles,2014-01-01,28(12)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Dulaquais G]'s Articles
[, Boye M]'s Articles
[, Middag R]'s Articles
百度学术
Similar articles in Baidu Scholar
[Dulaquais G]'s Articles
[, Boye M]'s Articles
[, Middag R]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Dulaquais G]‘s Articles
[, Boye M]‘s Articles
[, Middag R]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.