Surface distribution of dissolved trace metals in the oligotrophic ocean and their influence on phytoplankton biomass and productivity

Handle URI:
http://hdl.handle.net/10754/582469
Title:
Surface distribution of dissolved trace metals in the oligotrophic ocean and their influence on phytoplankton biomass and productivity
Authors:
Pinedo-González, Paulina; West, A. Joshua; Tovar-Sánchez, Antonio; Duarte, Carlos M. ( 0000-0002-1213-1361 ) ; Marañón, Emilio; Cermeño, Pedro; González, Natalia; Sobrino, Cristina; Huete-Ortega, María; Fernández, Ana; López-Sandoval, Daffne C.; Vidal, Montserrat; Blasco, Dolors; Estrada, Marta; Sañudo-Wilhelmy, Sergio A.
Abstract:
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.
KAUST Department:
Red Sea Research Center (RSRC)
Citation:
Surface distribution of dissolved trace metals in the oligotrophic ocean and their influence on phytoplankton biomass and productivity 2015, 29 (10):1763 Global Biogeochemical Cycles
Publisher:
Wiley-Blackwell
Journal:
Global Biogeochemical Cycles
Issue Date:
25-Oct-2015
DOI:
10.1002/2015GB005149
Type:
Article
ISSN:
08866236
Additional Links:
http://doi.wiley.com/10.1002/2015GB005149
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorPinedo-González, Paulinaen
dc.contributor.authorWest, A. Joshuaen
dc.contributor.authorTovar-Sánchez, Antonioen
dc.contributor.authorDuarte, Carlos M.en
dc.contributor.authorMarañón, Emilioen
dc.contributor.authorCermeño, Pedroen
dc.contributor.authorGonzález, Nataliaen
dc.contributor.authorSobrino, Cristinaen
dc.contributor.authorHuete-Ortega, Maríaen
dc.contributor.authorFernández, Anaen
dc.contributor.authorLópez-Sandoval, Daffne C.en
dc.contributor.authorVidal, Montserraten
dc.contributor.authorBlasco, Dolorsen
dc.contributor.authorEstrada, Martaen
dc.contributor.authorSañudo-Wilhelmy, Sergio A.en
dc.date.accessioned2015-11-22T11:59:58Zen
dc.date.available2015-11-22T11:59:58Zen
dc.date.issued2015-10-25en
dc.identifier.citationSurface distribution of dissolved trace metals in the oligotrophic ocean and their influence on phytoplankton biomass and productivity 2015, 29 (10):1763 Global Biogeochemical Cyclesen
dc.identifier.issn08866236en
dc.identifier.doi10.1002/2015GB005149en
dc.identifier.urihttp://hdl.handle.net/10754/582469en
dc.description.abstractThe 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.en
dc.language.isoenen
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://doi.wiley.com/10.1002/2015GB005149en
dc.rightsArchived with thanks to Global Biogeochemical Cycles. An edited version of this paper was published by AGU. Copyright (2015) American Geophysical Union.en
dc.titleSurface distribution of dissolved trace metals in the oligotrophic ocean and their influence on phytoplankton biomass and productivityen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalGlobal Biogeochemical Cyclesen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionDepartment of Earth Sciences; University of Southern California; Los Angeles California USAen
dc.contributor.institutionDepartment of Global Change Research; Mediterranean Institute for Advanced Studies (UIB-CSIC); Esporles Spainen
dc.contributor.institutionDepartamento de Ecología y Biología Animal; Universidad de Vigo; Vigo Spainen
dc.contributor.institutionInstitut de Ciències del Mar, Consejo Superior de Investigaciones Científicas; Barcelona Spainen
dc.contributor.institutionEscuela Superior de Ciencias Experimentales y Tecnología; Universidad Rey Juan Carlos; Móstoles Spainen
dc.contributor.institutionDepartament d'Ecologia; Universitat de Barcelona; Barcelona Spainen
dc.contributor.institutionDepartment Ecology and Coastal Management, Instituto de Ciencias Marinas de Andalucía (CSIC), Cádiz, Spainen
dc.contributor.institutionDepartment of Biological Sciences, University of Southern California, Los Angeles, California, USAen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorDuarte, Carlos M.en
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