Carbonate fluxes by coccolithophore species between Africa and the Caribbean

Coccolithophores are among the most important calcifying pelagic organisms. To assess how coccolithophore species with different coccolith-carbonate mass and distinct ecological resilience to ocean warming will influence the "rain ratio" and the "biological carbon pump", 1 yr of...

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Authors: Guerreiro, Catarina V.|||0000-0001-8524-540X, Baumann, Karl Heinz, Brummer, Geert-Jan|||0000-0003-4145-1281, Valente, André, Fischer, Gerhard, Ziveri, Patrizia|||0000-0002-5576-0301, Brotas, Vanda, Stuut, Jan-Berend W.
Format: article
Publication Date:2021
Country:España
Institution:Universitat Autònoma de Barcelona
Repository:Dipòsit Digital de Documents de la UAB
Language:English
OAI Identifier:oai:ddd.uab.cat:265364
Online Access:https://ddd.uab.cat/record/265364
https://dx.doi.org/urn:doi:10.1002/lno.11872
Access Level:Open access
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spelling Carbonate fluxes by coccolithophore species between Africa and the CaribbeanImplications for the biological carbon pumpGuerreiro, Catarina V.|||0000-0001-8524-540XBaumann, Karl HeinzBrummer, Geert-Jan|||0000-0003-4145-1281Valente, AndréFischer, GerhardZiveri, Patrizia|||0000-0002-5576-0301Brotas, VandaStuut, Jan-Berend W.Coccolithophores are among the most important calcifying pelagic organisms. To assess how coccolithophore species with different coccolith-carbonate mass and distinct ecological resilience to ocean warming will influence the "rain ratio" and the "biological carbon pump", 1 yr of species-specific coccolith-carbonate export fluxes were quantified using sediment traps moored at four sites between NW Africa and the Caribbean (i.e., CB-20°N/21°W, at 1214 m; M1-12°N/23°W, at 1150 m; M2-14°N/37°W, at 1235 m; M4-12°N/49°W, at 1130 m). Highest coccolith-CaCO fluxes at the westernmost site M4, where the nutricline is deepest along the tropical North Atlantic, were dominated by deep-dwelling small-sized coccolith species Florisphaera profunda and Gladiolithus flabellatus. Total coccolith-CaCO fluxes of 371 mg m -2 yr -1 at M4 were followed by 165 mg m -2 yr -1 at the north-easternmost CB, 130 mg m -2 yr -1 at M1, and 114 mg m -2 yr -1 at M2 in between. Coccoliths accounted for nearly half of the total carbonate flux at M4 (45%), much higher compared to 23% at M2 and 15% at M1 and CB. At site M4, highest ratios of coccolith-CaCO to particulate organic carbon fluxes and weak correlations between the carbonate of deep-dwelling species and particulate organic carbon suggest that increasing productivity in the lower photic zone in response to ocean warming might enhance the rain ratio and reduce the coccolith-ballasting efficiency. The resulting weakened biological carbon pump could, however, be counterbalanced by increasing frequency of Saharan dust outbreaks across the tropical Atlantic, providing mineral ballast as well as nutrients to fuel fast-blooming and ballast-efficient coccolithophore species. 22021-01-0120212021-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/265364https://dx.doi.org/urn:doi:10.1002/lno.11872reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengEuropean Commission https://doi.org/10.13039/501100000780 311152European Commission https://doi.org/10.13039/501100000780 600411European Commission https://doi.org/10.13039/501100000780 796802European Commission https://doi.org/10.13039/501100000780 810139Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 CTM2016-79547-RAgència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2017/SGR-1588open accesshttp://purl.org/coar/access_right/c_abf2Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.https://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:2653642026-06-06T12:50:31Z
dc.title.none.fl_str_mv Carbonate fluxes by coccolithophore species between Africa and the Caribbean
Implications for the biological carbon pump
title Carbonate fluxes by coccolithophore species between Africa and the Caribbean
spellingShingle Carbonate fluxes by coccolithophore species between Africa and the Caribbean
Guerreiro, Catarina V.|||0000-0001-8524-540X
title_short Carbonate fluxes by coccolithophore species between Africa and the Caribbean
title_full Carbonate fluxes by coccolithophore species between Africa and the Caribbean
title_fullStr Carbonate fluxes by coccolithophore species between Africa and the Caribbean
title_full_unstemmed Carbonate fluxes by coccolithophore species between Africa and the Caribbean
title_sort Carbonate fluxes by coccolithophore species between Africa and the Caribbean
dc.creator.none.fl_str_mv Guerreiro, Catarina V.|||0000-0001-8524-540X
Baumann, Karl Heinz
Brummer, Geert-Jan|||0000-0003-4145-1281
Valente, André
Fischer, Gerhard
Ziveri, Patrizia|||0000-0002-5576-0301
Brotas, Vanda
Stuut, Jan-Berend W.
author Guerreiro, Catarina V.|||0000-0001-8524-540X
author_facet Guerreiro, Catarina V.|||0000-0001-8524-540X
Baumann, Karl Heinz
Brummer, Geert-Jan|||0000-0003-4145-1281
Valente, André
Fischer, Gerhard
Ziveri, Patrizia|||0000-0002-5576-0301
Brotas, Vanda
Stuut, Jan-Berend W.
author_role author
author2 Baumann, Karl Heinz
Brummer, Geert-Jan|||0000-0003-4145-1281
Valente, André
Fischer, Gerhard
Ziveri, Patrizia|||0000-0002-5576-0301
Brotas, Vanda
Stuut, Jan-Berend W.
author2_role author
author
author
author
author
author
author
description Coccolithophores are among the most important calcifying pelagic organisms. To assess how coccolithophore species with different coccolith-carbonate mass and distinct ecological resilience to ocean warming will influence the "rain ratio" and the "biological carbon pump", 1 yr of species-specific coccolith-carbonate export fluxes were quantified using sediment traps moored at four sites between NW Africa and the Caribbean (i.e., CB-20°N/21°W, at 1214 m; M1-12°N/23°W, at 1150 m; M2-14°N/37°W, at 1235 m; M4-12°N/49°W, at 1130 m). Highest coccolith-CaCO fluxes at the westernmost site M4, where the nutricline is deepest along the tropical North Atlantic, were dominated by deep-dwelling small-sized coccolith species Florisphaera profunda and Gladiolithus flabellatus. Total coccolith-CaCO fluxes of 371 mg m -2 yr -1 at M4 were followed by 165 mg m -2 yr -1 at the north-easternmost CB, 130 mg m -2 yr -1 at M1, and 114 mg m -2 yr -1 at M2 in between. Coccoliths accounted for nearly half of the total carbonate flux at M4 (45%), much higher compared to 23% at M2 and 15% at M1 and CB. At site M4, highest ratios of coccolith-CaCO to particulate organic carbon fluxes and weak correlations between the carbonate of deep-dwelling species and particulate organic carbon suggest that increasing productivity in the lower photic zone in response to ocean warming might enhance the rain ratio and reduce the coccolith-ballasting efficiency. The resulting weakened biological carbon pump could, however, be counterbalanced by increasing frequency of Saharan dust outbreaks across the tropical Atlantic, providing mineral ballast as well as nutrients to fuel fast-blooming and ballast-efficient coccolithophore species.
publishDate 2021
dc.date.none.fl_str_mv 2
2021-01-01
2021
2021-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/265364
https://dx.doi.org/urn:doi:10.1002/lno.11872
url https://ddd.uab.cat/record/265364
https://dx.doi.org/urn:doi:10.1002/lno.11872
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission https://doi.org/10.13039/501100000780 311152
European Commission https://doi.org/10.13039/501100000780 600411
European Commission https://doi.org/10.13039/501100000780 796802
European Commission https://doi.org/10.13039/501100000780 810139
Agencia Estatal de Investigación https://doi.org/10.13039/501100011033 CTM2016-79547-R
Agència de Gestió d'Ajuts Universitaris i de Recerca https://doi.org/10.13039/501100003030 2017/SGR-1588
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://creativecommons.org/licenses/by-nc-nd/4.0/
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
https://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
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