A first estimation of the role of penguin guano on copper cycling and organic speciation in Antarctic coastal waters

© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Detalles Bibliográficos
Autores: García-Veira, Daniel, Sukekava, Camila Fiaux, Sparaventi, Erica, Navarro, Gabriel, Huertas, I. Emma, Tovar-Sánchez, Antonio, Laglera, Luis M.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2024
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/355341
Acceso en línea:http://hdl.handle.net/10261/355341
Access Level:acceso abierto
Palabra clave:Copper
Chemical speciation
Guano
Antarctica
Ligands
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dc.title.none.fl_str_mv A first estimation of the role of penguin guano on copper cycling and organic speciation in Antarctic coastal waters
title A first estimation of the role of penguin guano on copper cycling and organic speciation in Antarctic coastal waters
spellingShingle A first estimation of the role of penguin guano on copper cycling and organic speciation in Antarctic coastal waters
García-Veira, Daniel
Copper
Chemical speciation
Guano
Antarctica
Ligands
title_short A first estimation of the role of penguin guano on copper cycling and organic speciation in Antarctic coastal waters
title_full A first estimation of the role of penguin guano on copper cycling and organic speciation in Antarctic coastal waters
title_fullStr A first estimation of the role of penguin guano on copper cycling and organic speciation in Antarctic coastal waters
title_full_unstemmed A first estimation of the role of penguin guano on copper cycling and organic speciation in Antarctic coastal waters
title_sort A first estimation of the role of penguin guano on copper cycling and organic speciation in Antarctic coastal waters
dc.creator.none.fl_str_mv García-Veira, Daniel
Sukekava, Camila Fiaux
Sparaventi, Erica
Navarro, Gabriel
Huertas, I. Emma
Tovar-Sánchez, Antonio
Laglera, Luis M.
author García-Veira, Daniel
author_facet García-Veira, Daniel
Sukekava, Camila Fiaux
Sparaventi, Erica
Navarro, Gabriel
Huertas, I. Emma
Tovar-Sánchez, Antonio
Laglera, Luis M.
author_role author
author2 Sukekava, Camila Fiaux
Sparaventi, Erica
Navarro, Gabriel
Huertas, I. Emma
Tovar-Sánchez, Antonio
Laglera, Luis M.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
Govern de les Illes Balears
European Commission
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil)
Navarro, Gabriel [0000-0002-8919-0060]
Huertas, I. Emma [0000-0003-1033-7937]
Tovar-Sánchez, Antonio [0000-0003-4375-1982]
Laglera, Luis M. [0000-0002-5941-5900]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Copper
Chemical speciation
Guano
Antarctica
Ligands
topic Copper
Chemical speciation
Guano
Antarctica
Ligands
description © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
publishDate 2024
dc.date.none.fl_str_mv 2024
2024
2024
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/355341
url http://hdl.handle.net/10261/355341
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
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info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-098048-B-I00
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-115291GB-I00
The underlying dataset has been published as supplementary material of the article in the publisher platform at https://doi.org/10.1016/j.scitotenv.2023.169266
https://doi.org/10.1016/j.scitotenv.2023.169266
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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dc.publisher.none.fl_str_mv Elsevier BV
publisher.none.fl_str_mv Elsevier BV
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
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spelling A first estimation of the role of penguin guano on copper cycling and organic speciation in Antarctic coastal watersGarcía-Veira, DanielSukekava, Camila FiauxSparaventi, EricaNavarro, GabrielHuertas, I. EmmaTovar-Sánchez, AntonioLaglera, Luis M.CopperChemical speciationGuanoAntarcticaLigands© 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).Cu is a vital micronutrient, but free Cu ions (Cu2+) in seawater, even at subnanomolar concentrations, can impede phytoplankton growth. Natural Cu complexation with organic ligands regulates Cu acquisition and, in most instances, reduces Cu2+ concentrations below toxic thresholds. Along the Antarctic coast, the sources and sinks of Cu and its associated ligands remain poorly defined. Despite the high productivity in the area, there are no studies on the role of trophic transfer in Cu cycling. This study explores penguin guano release of Cu and Cu ligands and its potential in neutralizing copper toxicity along the Antarctic coast. We collected guano in a Chinstrap penguin nesting location in the West coast of Deception Island and extracted its components into aqueous solution imitating natural processes. Copper concentration in guano was 0.4 mg (dry weight g)−1 constituting a potential toxic threat and showed biomagnification with respect to krill. Surface seawater samples collected from various locations varying in penguin activity, were analyzed to assess the potential influence of guano on the area. Visual examination and elevated levels of Al suggested that a substantial portion of guano was lithogenic. Consequently, only a modest 16 % of the total Cu present in guano could be extracted using mechanical methods. Notably, the concentrations of the extracted organic ligands were approximately 23 times higher than the concentrations of the extracted Cu. This significant presence of ligands effectively nullifies any potential toxicity that could have arisen from free Cu2+ ions. Guano ligands' conditional stability constants were lower than those in surface seawater suggesting phytoplankton exudation was the main ligand source in the area. Overall, guano acts as a key node for Cu cycling in coastal Antarctic waters but its deleterious potential is neutralized by ligands from krill digestion and the high background concentration of phytoplankton exudates.This research has been funded by the Spanish Government projects PIMETAN (RTI2018-098048-B-I00) and HUFENAO (PID2020-115291GB-I00) funded by MCIN/AEI/10.13039/501100011033. Daniel García Veira was funded by the Conselleria de Fons Europeus, Universitat i Cultura, Govern de Les Illes Balears (contract RI-01.08/22 – CT 1). Camila Sukekava participated in this work thanks to a grant provided by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) (88887.479740/2020-00). E. Sparaventi was supported by a Spanish FPI grant (PRE2019-089679).Peer reviewedElsevier BVMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Govern de les Illes BalearsEuropean CommissionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (Brasil)Navarro, Gabriel [0000-0002-8919-0060]Huertas, I. Emma [0000-0003-1033-7937]Tovar-Sánchez, Antonio [0000-0003-4375-1982]Laglera, Luis M. [0000-0002-5941-5900]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242024info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/355341reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/RTI2018-098048-B-I00info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-115291GB-I00The underlying dataset has been published as supplementary material of the article in the publisher platform at https://doi.org/10.1016/j.scitotenv.2023.169266https://doi.org/10.1016/j.scitotenv.2023.169266Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3553412026-05-22T06:33:51Z
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