globalchange  > 气候变化事实与影响
DOI: 10.1002/2015GB005149
Scopus记录号: 2-s2.0-84946576629
论文题名:
Surface distribution of dissolved trace metals in the oligotrophic ocean and their influence on phytoplankton biomass and productivity
作者: Pinedo-González P; , West A; J; , Tovar-Sánchez A; , Duarte C; M; , Marañõn E; , Cermeño P; , González N; , Sobrino C; , Huete-Ortega M; , Fernández A; , Lõpez-Sandoval D; C; , Vidal M; , Blasco D; , Estrada M; , Sañudo-Wilhelmy S; A
刊名: Global Biogeochemical Cycles
ISSN: 8866236
出版年: 2015
卷: 29, 期:10
起始页码: 1763
结束页码: 1781
语种: 英语
英文关键词: circumnavigation ; trace metals
Scopus关键词: concentration (composition) ; dissolved matter ; global ocean ; oligotrophic environment ; phytomass ; phytoplankton ; primary production ; surface water ; temporal analysis ; trace element ; trace metal ; Atlantic Ocean ; Indian Ocean ; Pacific Ocean ; Pacific Ocean (Central)
英文摘要: The distribution of bioactive trace metals has the potential to enhance or limit primary productivity and carbon export in some regions of the world ocean. To study these connections, the concentrations of Cd, Co, Cu, Fe, Mo, Ni, and V were determined for 110 surface water samples collected during the Malaspina 2010 Circumnavigation Expedition (MCE). Total dissolved Cd, Co, Cu, Fe, Mo, Ni, and V concentrations averaged 19.0 ± 5.4 pM, 21.4 ± 12 pM, 0.91 ± 0.4 nM, 0.66 ± 0.3 nM, 88.8 ± 12 nM, 1.72 ± 0.4 nM, and 23.4 ± 4.4 nM, respectively, with the lowest values detected in the Central Pacific and increased values at the extremes of all transects near coastal zones. Trace metal concentrations measured in surface waters of the Atlantic Ocean during the MCE were compared to previously published data for the same region. The comparison revealed little temporal changes in the distribution of Cd, Co, Cu, Fe, and Ni over the last 30 years. We utilized a multivariable linear regression model to describe potential relationships between primary productivity and the hydrological, biological, trace nutrient and macronutrient data collected during the MCE. Our statistical analysis shows that primary productivity in the Indian Ocean is best described by chlorophyll a, NO3, Ni, temperature, SiO4, and Cd. In the Atlantic Ocean, primary productivity is correlated with chlorophyll a, NO3, PO4, mixed layer depth, Co, Fe, Cd, Cu, V, and Mo. The variables salinity, temperature, SiO4, NO3, PO4, Fe, Cd, and V were found to best predict primary productivity in the Pacific Ocean. These results suggest that some of the lesser studied trace elements (e.g., Ni, V, Mo, and Cd) may play a more important role in regulating oceanic primary productivity than previously thought and point to the need for future experiments to verify their potential biological functions. Key Points The distribution of trace metals in waters of the global ocean was determined No multiyear variation in the distribution of trace metals in the Atlantic Ocean was observed Some metals correlate with primary productivity, suggesting potential metal limitation ©2015. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/77917
Appears in Collections:气候变化事实与影响

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作者单位: Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States; Department of Global Change Research, Mediterranean Institute for Advanced Studies (UIB-CSIC), Esporles, Spain; Department Ecology and Coastal Management, Instituto de Ciencias Marinas de Andalucía (CSIC), Cádiz, Spain; Red Sea Research Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia; Departamento de Ecología y Biología Animal, Universidad de Vigo, Vigo, Spain; Institut de Ciències Del Mar, Consejo Superior de Investigaciones Científicas, Barcelona, Spain; Escuela Superior de Ciencias Experimentales y Tecnología, Universidad Rey Juan Carlos, Mõstoles, Spain; Departament d'Ecologia, Universitat de Barcelona, Barcelona, Spain; Department of Biological Sciences, University of Southern California, Los Angeles, CA, United States

Recommended Citation:
Pinedo-González P,, West A,J,et al. Surface distribution of dissolved trace metals in the oligotrophic ocean and their influence on phytoplankton biomass and productivity[J]. Global Biogeochemical Cycles,2015-01-01,29(10)
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