Stable Isotope (δ13C, δ15N, δ18O, δD) composition and nutrient concentration of Red Sea primary producers

Measurements of isotopic composition of marine primary producers are a valuable tool to follow and trace the source and cycling of organic matter in the marine systems, as well to describe the physiological status of aquatic photosynthetic organisms. Although stable isotope data abounds in the liter...

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Autores: Duarte, Carlos M., Delgado Huertas, Antonio, Anton, Andrea, Carrillo de Albornoz, Paloma, López-Sandoval, Daffne, Agustí, Susana, Almahasheer, Hanan, Marbà, Núria, Hendriks, Iris E., Krause-Jensen, Dorte, Garcias-Bonet, Neus
Tipo de documento: artigo
Estado:Versão publicada
Data de publicação:2018
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/214392
Acesso em linha:http://hdl.handle.net/10261/214392
Access Level:Acceso aberto
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spelling Stable Isotope (δ13C, δ15N, δ18O, δD) composition and nutrient concentration of Red Sea primary producersDuarte, Carlos M.Delgado Huertas, AntonioAnton, AndreaCarrillo de Albornoz, PalomaLópez-Sandoval, DaffneAgustí, SusanaAlmahasheer, HananMarbà, NúriaHendriks, Iris E.Krause-Jensen, DorteGarcias-Bonet, NeusMeasurements of isotopic composition of marine primary producers are a valuable tool to follow and trace the source and cycling of organic matter in the marine systems, as well to describe the physiological status of aquatic photosynthetic organisms. Although stable isotope data abounds in the literature, relatively limited information regarding the isotopic signatures of marine primary producers is available for the Red Sea. Here we present data on carbon concentration (and nitrogen when possible) of phytoplankton, macroalgae, seagrasses, mangroves and salt-marsh plants, and examine how their isotopic signatures differed among plant types across a north-south gradient in the Red Sea. We also tested the potential use of deuterium, δD, to distinguish among primary producers whose carbon isotopic values may overlap. Our findings showed a clear differentiation of carbon and nitrogen content between the different groups of primary producers, as well as between species. Seagrasses and mangroves had on average larger carbon (30 and 49% of C, respectively) and nitrogen content (1.8% N) than other groups. In terms of stable carbon isotopes, seagrasses, and macroalgae tended to be heavier (-7.3 and -13.3%0, respectively) than halophytes, mangroves, and phytoplankton, which showed statistically similar and lighter δC values (between -24 and -26%0). There was a tendency for the nitrogen isotopic composition of seagrass and macroalgae to become lighter from the southern to the northern Red Sea, in parallel to a decline in nitrogen concentration in the tissues, indicative of a higher dependence of nitrogen fixation as a source of nitrogen toward the more oligotrophic northern Red Sea. Our results showed an overlap in the δC and δN values between macroalgae and seagrasses; however, their δD values were significantly different (seagrasses -56.6 ± 2.8%0 and macroalgae -95.7 ± 3.4%0). This remarkable difference offers a promising alternative for ecological studies where a similar range of isotopic values could mask different potential sources.This research was funded by King Abdullah University of Science and Technology through base-line funding to CD and SA, with references BAS/1/1071-01-01 and BAS/1/1072-01-01, and CCF funding to CD. IH was supported by a Ramon y Cajal Fellowship RYC2014-14970, cofounded by the Conselleria d’Innovació, Recerca i Turisme of the Balearic Government (Pla de ciència, tecnologia, innovació i emprenedoria 20132017) and the Spanish Ministry of Economy, Industry, and Competitiveness.Frontiers MediaMinisterio de Economía, Industria y Competitividad (España)European CommissionKing Abdullah University of Science and TechnologyConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2020202020182020info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/214392reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/RYC2014-14970http://dx.doi.org/10.3389/fmars.2018.00298Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2143922026-05-22T06:33:51Z
dc.title.none.fl_str_mv Stable Isotope (δ13C, δ15N, δ18O, δD) composition and nutrient concentration of Red Sea primary producers
title Stable Isotope (δ13C, δ15N, δ18O, δD) composition and nutrient concentration of Red Sea primary producers
spellingShingle Stable Isotope (δ13C, δ15N, δ18O, δD) composition and nutrient concentration of Red Sea primary producers
Duarte, Carlos M.
title_short Stable Isotope (δ13C, δ15N, δ18O, δD) composition and nutrient concentration of Red Sea primary producers
title_full Stable Isotope (δ13C, δ15N, δ18O, δD) composition and nutrient concentration of Red Sea primary producers
title_fullStr Stable Isotope (δ13C, δ15N, δ18O, δD) composition and nutrient concentration of Red Sea primary producers
title_full_unstemmed Stable Isotope (δ13C, δ15N, δ18O, δD) composition and nutrient concentration of Red Sea primary producers
title_sort Stable Isotope (δ13C, δ15N, δ18O, δD) composition and nutrient concentration of Red Sea primary producers
dc.creator.none.fl_str_mv Duarte, Carlos M.
Delgado Huertas, Antonio
Anton, Andrea
Carrillo de Albornoz, Paloma
López-Sandoval, Daffne
Agustí, Susana
Almahasheer, Hanan
Marbà, Núria
Hendriks, Iris E.
Krause-Jensen, Dorte
Garcias-Bonet, Neus
author Duarte, Carlos M.
author_facet Duarte, Carlos M.
Delgado Huertas, Antonio
Anton, Andrea
Carrillo de Albornoz, Paloma
López-Sandoval, Daffne
Agustí, Susana
Almahasheer, Hanan
Marbà, Núria
Hendriks, Iris E.
Krause-Jensen, Dorte
Garcias-Bonet, Neus
author_role author
author2 Delgado Huertas, Antonio
Anton, Andrea
Carrillo de Albornoz, Paloma
López-Sandoval, Daffne
Agustí, Susana
Almahasheer, Hanan
Marbà, Núria
Hendriks, Iris E.
Krause-Jensen, Dorte
Garcias-Bonet, Neus
author2_role author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía, Industria y Competitividad (España)
European Commission
King Abdullah University of Science and Technology
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
description Measurements of isotopic composition of marine primary producers are a valuable tool to follow and trace the source and cycling of organic matter in the marine systems, as well to describe the physiological status of aquatic photosynthetic organisms. Although stable isotope data abounds in the literature, relatively limited information regarding the isotopic signatures of marine primary producers is available for the Red Sea. Here we present data on carbon concentration (and nitrogen when possible) of phytoplankton, macroalgae, seagrasses, mangroves and salt-marsh plants, and examine how their isotopic signatures differed among plant types across a north-south gradient in the Red Sea. We also tested the potential use of deuterium, δD, to distinguish among primary producers whose carbon isotopic values may overlap. Our findings showed a clear differentiation of carbon and nitrogen content between the different groups of primary producers, as well as between species. Seagrasses and mangroves had on average larger carbon (30 and 49% of C, respectively) and nitrogen content (1.8% N) than other groups. In terms of stable carbon isotopes, seagrasses, and macroalgae tended to be heavier (-7.3 and -13.3%0, respectively) than halophytes, mangroves, and phytoplankton, which showed statistically similar and lighter δC values (between -24 and -26%0). There was a tendency for the nitrogen isotopic composition of seagrass and macroalgae to become lighter from the southern to the northern Red Sea, in parallel to a decline in nitrogen concentration in the tissues, indicative of a higher dependence of nitrogen fixation as a source of nitrogen toward the more oligotrophic northern Red Sea. Our results showed an overlap in the δC and δN values between macroalgae and seagrasses; however, their δD values were significantly different (seagrasses -56.6 ± 2.8%0 and macroalgae -95.7 ± 3.4%0). This remarkable difference offers a promising alternative for ecological studies where a similar range of isotopic values could mask different potential sources.
publishDate 2018
dc.date.none.fl_str_mv 2018
2020
2020
2020
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
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/214392
url http://hdl.handle.net/10261/214392
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/RYC2014-14970
http://dx.doi.org/10.3389/fmars.2018.00298
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Frontiers Media
publisher.none.fl_str_mv Frontiers Media
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
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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