The contribution of penguin guano to the Southern Ocean iron pool

Iron plays a crucial role in the high-nutrient, low-chlorophyll Southern Ocean regions, promoting phytoplankton growth and enhancing atmospheric carbon sequestration. In this area, iron-rich Antarctic krill (Euphausia superba) and baleen whale species, which are among their main predators, play a la...

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Autores: Belyaev, Oleg, Sparaventi, Erica, Navarro, Gabriel, Rodríguez-Romero, Araceli, Tovar-Sánchez, Antonio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2023
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/337529
Acceso en línea:http://hdl.handle.net/10261/337529
https://api.elsevier.com/content/abstract/scopus_id/85152273547
Access Level:acceso abierto
Palabra clave:Element cycles
Marine chemistry
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spelling The contribution of penguin guano to the Southern Ocean iron poolBelyaev, OlegSparaventi, EricaNavarro, GabrielRodríguez-Romero, AraceliTovar-Sánchez, AntonioElement cyclesMarine chemistryIron plays a crucial role in the high-nutrient, low-chlorophyll Southern Ocean regions, promoting phytoplankton growth and enhancing atmospheric carbon sequestration. In this area, iron-rich Antarctic krill (Euphausia superba) and baleen whale species, which are among their main predators, play a large role in the recycling of iron. However, penguins have received limited attention despite their representing the largest seabird biomass in the southern polar region. Here, we use breeding site guano volumes estimated from drone images, deep learning-powered penguin census, and guano chemical composition to assess the iron export to the Antarctic waters from one of the most abundant penguin species, the Chinstrap penguin (Pygoscelis antarcticus). Our results show that these seabirds are a relevant contributor to the iron remobilization pool in the Southern Ocean. With an average guano concentration of 3 mg iron g-1, we estimate that the Chinstrap penguin population is recycling 521 tonnes iron yr-1, representing the current iron contribution half of the amount these penguins were able to recycle four decades ago, as they have declined by more than 50% since then.This research has been funded by the Spanish Government projects PIMETAN (ref. RTI2018-098048-B-I00), DICHOSO (PID2021-125783OB-I00), EQC2018-004275-P and EQC2019-005721-P funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”. E.S. is supported by the Spanish FPI grant (Ref: PRE2019-089679) and A.R.-R. is supported by the Spanish grant Juan de la Cierva Incorporación (Ref: IJC2018-037545-I) funded by MCIN/AEI/ 10.13039/501100011033 and by “ERDF A way of making Europe”. Copernicus Sentinel data (2021) was obtained from Sentinel Hub.Peer reviewedNature Publishing GroupMinisterio de Ciencia, Innovación y Universidades (España)Agencia Estatal de Investigación (España)Ministerio de Ciencia e Innovación (España)European CommissionBelyaev, Oleg [0000-0002-8851-2996]Sparaventi, Erica [0000-0002-7578-8918]Navarro, Gabriel [0000-0002-8919-0060]Rodríguez-Romero, Araceli [0000-0002-6718-1040]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202320232023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/337529https://api.elsevier.com/content/abstract/scopus_id/85152273547reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##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 2021-2023/PID2021-125783OB-I00info:eu-repo/grantAgreement/AEI//EQC2018-004275-Pinfo:eu-repo/grantAgreement/AEI//EQC2019-005721-Pinfo:eu-repo/grantAgreement/AEI//PRE2019-089679info:eu-repo/grantAgreement/AEI//IJC2018-037545-IThe underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1038/s41467-023-37132-5https://doi.org/10.1038/s41467-023-37132-5Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3375292026-05-22T06:33:51Z
dc.title.none.fl_str_mv The contribution of penguin guano to the Southern Ocean iron pool
title The contribution of penguin guano to the Southern Ocean iron pool
spellingShingle The contribution of penguin guano to the Southern Ocean iron pool
Belyaev, Oleg
Element cycles
Marine chemistry
title_short The contribution of penguin guano to the Southern Ocean iron pool
title_full The contribution of penguin guano to the Southern Ocean iron pool
title_fullStr The contribution of penguin guano to the Southern Ocean iron pool
title_full_unstemmed The contribution of penguin guano to the Southern Ocean iron pool
title_sort The contribution of penguin guano to the Southern Ocean iron pool
dc.creator.none.fl_str_mv Belyaev, Oleg
Sparaventi, Erica
Navarro, Gabriel
Rodríguez-Romero, Araceli
Tovar-Sánchez, Antonio
author Belyaev, Oleg
author_facet Belyaev, Oleg
Sparaventi, Erica
Navarro, Gabriel
Rodríguez-Romero, Araceli
Tovar-Sánchez, Antonio
author_role author
author2 Sparaventi, Erica
Navarro, Gabriel
Rodríguez-Romero, Araceli
Tovar-Sánchez, Antonio
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia, Innovación y Universidades (España)
Agencia Estatal de Investigación (España)
Ministerio de Ciencia e Innovación (España)
European Commission
Belyaev, Oleg [0000-0002-8851-2996]
Sparaventi, Erica [0000-0002-7578-8918]
Navarro, Gabriel [0000-0002-8919-0060]
Rodríguez-Romero, Araceli [0000-0002-6718-1040]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Element cycles
Marine chemistry
topic Element cycles
Marine chemistry
description Iron plays a crucial role in the high-nutrient, low-chlorophyll Southern Ocean regions, promoting phytoplankton growth and enhancing atmospheric carbon sequestration. In this area, iron-rich Antarctic krill (Euphausia superba) and baleen whale species, which are among their main predators, play a large role in the recycling of iron. However, penguins have received limited attention despite their representing the largest seabird biomass in the southern polar region. Here, we use breeding site guano volumes estimated from drone images, deep learning-powered penguin census, and guano chemical composition to assess the iron export to the Antarctic waters from one of the most abundant penguin species, the Chinstrap penguin (Pygoscelis antarcticus). Our results show that these seabirds are a relevant contributor to the iron remobilization pool in the Southern Ocean. With an average guano concentration of 3 mg iron g-1, we estimate that the Chinstrap penguin population is recycling 521 tonnes iron yr-1, representing the current iron contribution half of the amount these penguins were able to recycle four decades ago, as they have declined by more than 50% since then.
publishDate 2023
dc.date.none.fl_str_mv 2023
2023
2023
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http://purl.org/coar/resource_type/c_6501
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dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/337529
https://api.elsevier.com/content/abstract/scopus_id/85152273547
url http://hdl.handle.net/10261/337529
https://api.elsevier.com/content/abstract/scopus_id/85152273547
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 2021-2023/PID2021-125783OB-I00
info:eu-repo/grantAgreement/AEI//EQC2018-004275-P
info:eu-repo/grantAgreement/AEI//EQC2019-005721-P
info:eu-repo/grantAgreement/AEI//PRE2019-089679
info:eu-repo/grantAgreement/AEI//IJC2018-037545-I
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI 10.1038/s41467-023-37132-5
https://doi.org/10.1038/s41467-023-37132-5
Sí
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dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
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