Metals content in surface waters of an upwelling system of the northern Humboldt Current (Mejillones Bay, Chile)

Physical-chemical parameters (temperature, salinity, dissolved oxygen, nutrients, and chlorophyll concentration) of surface waters were used to evaluate the influence of biological and physical processes over the metal concentrations (Cd, Ni, V, Mo, Mn, and Fe) in different periods of a normal annua...

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Detalles Bibliográficos
Autores: Valdés, Jorge, Román, Domingo, Álvarez Galindo, Gabriel, Ortlieb, Luc, Guiñez, Marcos
Tipo de recurso: artículo
Fecha de publicación:2008
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/51542
Acceso en línea:https://hdl.handle.net/20.500.14352/51542
Access Level:acceso abierto
Palabra clave:51-73
Trace metals
Upwelling
Humboldt system
Marine surface water
Física-Modelos matemáticos
Física matemática
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spelling Metals content in surface waters of an upwelling system of the northern Humboldt Current (Mejillones Bay, Chile)Valdés, JorgeRomán, DomingoÁlvarez Galindo, GabrielOrtlieb, LucGuiñez, Marcos51-73Trace metalsUpwellingHumboldt systemMarine surface waterFísica-Modelos matemáticosFísica matemáticaPhysical-chemical parameters (temperature, salinity, dissolved oxygen, nutrients, and chlorophyll concentration) of surface waters were used to evaluate the influence of biological and physical processes over the metal concentrations (Cd, Ni, V, Mo, Mn, and Fe) in different periods of a normal annual cycle (June 2002 and April 2003), in Mejillones Bay (23 degrees S), one of northern Chile's strongest upwelling cells. Two points were sampled every 2 months, but statistical analysis of these parameters did not show any spatial differences in surface water composition (annual average) in this bay. The order of total and dissolved metals by abundance (annual mean) in the Mejillones Bay surface waters during the sampling period was Cd < Ni < Mn < Fe < V < Mo. The surface concentration of metals does not appear to be explained by anthropogenic inputs (at least not during the year of this work), and variability observed in this study appears to be natural. The lack of correlation between physical-chemical parameters and metals could indicate a more complex combination of factors acting on surface concentrations. Moreover, the mixture of water masses and the Oxygen Minimum Zone which characterizes the Mejillones bay should have an important influence on surface distribution of trace metals and can explain the high temporal variability observed in most of the metals analyzed in this work. A two-box conceptual model is proposed to suggest possible influences on metals in surface waters of this coastal ecosystem. (c) 2007 Elsevier B.V. All rights reserved.Elsevier Science BVUniversidad Complutense de Madrid20082008-05-0120082008-05-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/51542reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/515422026-06-02T12:44:21Z
dc.title.none.fl_str_mv Metals content in surface waters of an upwelling system of the northern Humboldt Current (Mejillones Bay, Chile)
title Metals content in surface waters of an upwelling system of the northern Humboldt Current (Mejillones Bay, Chile)
spellingShingle Metals content in surface waters of an upwelling system of the northern Humboldt Current (Mejillones Bay, Chile)
Valdés, Jorge
51-73
Trace metals
Upwelling
Humboldt system
Marine surface water
Física-Modelos matemáticos
Física matemática
title_short Metals content in surface waters of an upwelling system of the northern Humboldt Current (Mejillones Bay, Chile)
title_full Metals content in surface waters of an upwelling system of the northern Humboldt Current (Mejillones Bay, Chile)
title_fullStr Metals content in surface waters of an upwelling system of the northern Humboldt Current (Mejillones Bay, Chile)
title_full_unstemmed Metals content in surface waters of an upwelling system of the northern Humboldt Current (Mejillones Bay, Chile)
title_sort Metals content in surface waters of an upwelling system of the northern Humboldt Current (Mejillones Bay, Chile)
dc.creator.none.fl_str_mv Valdés, Jorge
Román, Domingo
Álvarez Galindo, Gabriel
Ortlieb, Luc
Guiñez, Marcos
author Valdés, Jorge
author_facet Valdés, Jorge
Román, Domingo
Álvarez Galindo, Gabriel
Ortlieb, Luc
Guiñez, Marcos
author_role author
author2 Román, Domingo
Álvarez Galindo, Gabriel
Ortlieb, Luc
Guiñez, Marcos
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 51-73
Trace metals
Upwelling
Humboldt system
Marine surface water
Física-Modelos matemáticos
Física matemática
topic 51-73
Trace metals
Upwelling
Humboldt system
Marine surface water
Física-Modelos matemáticos
Física matemática
description Physical-chemical parameters (temperature, salinity, dissolved oxygen, nutrients, and chlorophyll concentration) of surface waters were used to evaluate the influence of biological and physical processes over the metal concentrations (Cd, Ni, V, Mo, Mn, and Fe) in different periods of a normal annual cycle (June 2002 and April 2003), in Mejillones Bay (23 degrees S), one of northern Chile's strongest upwelling cells. Two points were sampled every 2 months, but statistical analysis of these parameters did not show any spatial differences in surface water composition (annual average) in this bay. The order of total and dissolved metals by abundance (annual mean) in the Mejillones Bay surface waters during the sampling period was Cd < Ni < Mn < Fe < V < Mo. The surface concentration of metals does not appear to be explained by anthropogenic inputs (at least not during the year of this work), and variability observed in this study appears to be natural. The lack of correlation between physical-chemical parameters and metals could indicate a more complex combination of factors acting on surface concentrations. Moreover, the mixture of water masses and the Oxygen Minimum Zone which characterizes the Mejillones bay should have an important influence on surface distribution of trace metals and can explain the high temporal variability observed in most of the metals analyzed in this work. A two-box conceptual model is proposed to suggest possible influences on metals in surface waters of this coastal ecosystem. (c) 2007 Elsevier B.V. All rights reserved.
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-05-01
2008
2008-05-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/51542
url https://hdl.handle.net/20.500.14352/51542
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Science BV
publisher.none.fl_str_mv Elsevier Science BV
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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