Trophic ecology of Angolan cold-water coral reefs (SE Atlantic) based on stable isotope analyses

Cold-water coral (CWC) reefs of the Angolan margin (SE Atlantic) are dominated by Desmophyllum pertusum and support a diverse community of associated fauna, despite hypoxic conditions. In this study, we use carbon and nitrogen stable isotope analyses (δ13C and δ15N) to decipher the trophic network o...

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Autores: Vinha, Beatriz, Rossi, Sergio, Gori, Andrea, Hanz, Ulrike, Pennetta, Antonio, De Benedetto, Giuseppe E, Mienis, Furu, Huvenne, Veerle A.I., Hebbeln, Dierk, Wienberg, Claudia, Titschack, Jürgen, Freiwald, André, Piraino, Stefano, Orejas, Covadonga
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:10261/343235
Acceso en línea:http://hdl.handle.net/10261/343235
https://api.elsevier.com/content/abstract/scopus_id/85162649271
Access Level:acceso abierto
Palabra clave:Food webs
Marine biology
Stable isotope analysis
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spelling Trophic ecology of Angolan cold-water coral reefs (SE Atlantic) based on stable isotope analysesVinha, BeatrizRossi, SergioGori, AndreaHanz, UlrikePennetta, AntonioDe Benedetto, Giuseppe EMienis, FuruHuvenne, Veerle A.I.Hebbeln, DierkWienberg, ClaudiaTitschack, JürgenFreiwald, AndréPiraino, StefanoOrejas, CovadongaFood websMarine biologyStable isotope analysisCold-water coral (CWC) reefs of the Angolan margin (SE Atlantic) are dominated by Desmophyllum pertusum and support a diverse community of associated fauna, despite hypoxic conditions. In this study, we use carbon and nitrogen stable isotope analyses (δ13C and δ15N) to decipher the trophic network of this relatively unknown CWC province. Although fresh phytodetritus is available to the reef, δ15N signatures indicate that CWCs (12.90 ± 1.00 ‰) sit two trophic levels above Suspended Particulate Organic Matter (SPOM) (4.23 ± 1.64 ‰) suggesting that CWCs are highly reliant on an intermediate food source, which may be zooplankton. Echinoderms and the polychaete Eunice norvegica occupy the same trophic guild, with high δ13C signatures (-14.00 ± 1.08 ‰) pointing to a predatory feeding behavior on CWCs and sponges, although detrital feeding on 13C enriched particles might also be important for this group. Sponges presented the highest δ15N values (20.20 ± 1.87 ‰), which could be due to the role of the sponge holobiont and bacterial food in driving intense nitrogen cycling processes in sponges' tissue, helping to cope with the hypoxic conditions of the reef. Our study provides first insights to understand trophic interactions of CWC reefs under low-oxygen conditions.We would like to thank the German Science Foundation (DFG) for enabling the RV Meteor cruise M122 and for funding the application of the MARUM ROV SQUID. The research included in this manuscript received funding from the European Union’s Horizon 2020 iAtlantic project (Grant Agreement No. 818123). This manuscript reflects the authors’ view alone, and the European Union cannot be held responsible for any use that may be made of the information contained herein. This research received further support from the Cluster of Excellence “The Ocean Floor—Earth’s Uncharted Interface” (Germany’s Excellence Strategy—EXC-2077-390741603 of the DFG) (DH, CW, JT, AF). BV’s PhD research is funded by POR Puglia FESR FSE 2014-2020. VH is funded by NERC Grant No NE/R015953/1 (CLASS). Further support was provided to S.R. and S.P. by the EU project number 101060072 “ACTNOW—Advancing understanding of Cumulative Impacts on European marine biodiversity, ecosystem functions and services for human wellbeing”. BV, CO and VH enjoyed a Fellowship from the Hanse-Wissenschaftskolleg Institute for Advanced Study during the final preparation stages of this manuscript.Peer reviewedNature Publishing GroupGerman Research FoundationEuropean CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202420242023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/343235https://api.elsevier.com/content/abstract/scopus_id/85162649271reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/EC/H2020/818123Scientific reportsVinha, Beatriz; Rossi, Sergio; Gori, Andrea; Hanz, Ulrike; Pennetta, Antonio; De Benedetto, Giuseppe E; Mienis, Furu; Huvenne, Veerle A I; Hebbeln, Dierk; Wienberg, Claudia; Titschack, Jürgen; Freiwald, André; Piraino, Stefano; Orejas, Covadonga (2023): Carbon and nitrogen stable isotopes of benthic megafauna on the Angolan cold-water coral reefs (SE Atlantic). PANGAEA, https://doi.org/10.1594/PANGAEA.955091. http://hdl.handle.net/10261/343294.https://doi.org/10.1038/s41598-023-37035-xSíinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3432352026-05-22T06:33:51Z
dc.title.none.fl_str_mv Trophic ecology of Angolan cold-water coral reefs (SE Atlantic) based on stable isotope analyses
title Trophic ecology of Angolan cold-water coral reefs (SE Atlantic) based on stable isotope analyses
spellingShingle Trophic ecology of Angolan cold-water coral reefs (SE Atlantic) based on stable isotope analyses
Vinha, Beatriz
Food webs
Marine biology
Stable isotope analysis
title_short Trophic ecology of Angolan cold-water coral reefs (SE Atlantic) based on stable isotope analyses
title_full Trophic ecology of Angolan cold-water coral reefs (SE Atlantic) based on stable isotope analyses
title_fullStr Trophic ecology of Angolan cold-water coral reefs (SE Atlantic) based on stable isotope analyses
title_full_unstemmed Trophic ecology of Angolan cold-water coral reefs (SE Atlantic) based on stable isotope analyses
title_sort Trophic ecology of Angolan cold-water coral reefs (SE Atlantic) based on stable isotope analyses
dc.creator.none.fl_str_mv Vinha, Beatriz
Rossi, Sergio
Gori, Andrea
Hanz, Ulrike
Pennetta, Antonio
De Benedetto, Giuseppe E
Mienis, Furu
Huvenne, Veerle A.I.
Hebbeln, Dierk
Wienberg, Claudia
Titschack, Jürgen
Freiwald, André
Piraino, Stefano
Orejas, Covadonga
author Vinha, Beatriz
author_facet Vinha, Beatriz
Rossi, Sergio
Gori, Andrea
Hanz, Ulrike
Pennetta, Antonio
De Benedetto, Giuseppe E
Mienis, Furu
Huvenne, Veerle A.I.
Hebbeln, Dierk
Wienberg, Claudia
Titschack, Jürgen
Freiwald, André
Piraino, Stefano
Orejas, Covadonga
author_role author
author2 Rossi, Sergio
Gori, Andrea
Hanz, Ulrike
Pennetta, Antonio
De Benedetto, Giuseppe E
Mienis, Furu
Huvenne, Veerle A.I.
Hebbeln, Dierk
Wienberg, Claudia
Titschack, Jürgen
Freiwald, André
Piraino, Stefano
Orejas, Covadonga
author2_role author
author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv German Research Foundation
European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Food webs
Marine biology
Stable isotope analysis
topic Food webs
Marine biology
Stable isotope analysis
description Cold-water coral (CWC) reefs of the Angolan margin (SE Atlantic) are dominated by Desmophyllum pertusum and support a diverse community of associated fauna, despite hypoxic conditions. In this study, we use carbon and nitrogen stable isotope analyses (δ13C and δ15N) to decipher the trophic network of this relatively unknown CWC province. Although fresh phytodetritus is available to the reef, δ15N signatures indicate that CWCs (12.90 ± 1.00 ‰) sit two trophic levels above Suspended Particulate Organic Matter (SPOM) (4.23 ± 1.64 ‰) suggesting that CWCs are highly reliant on an intermediate food source, which may be zooplankton. Echinoderms and the polychaete Eunice norvegica occupy the same trophic guild, with high δ13C signatures (-14.00 ± 1.08 ‰) pointing to a predatory feeding behavior on CWCs and sponges, although detrital feeding on 13C enriched particles might also be important for this group. Sponges presented the highest δ15N values (20.20 ± 1.87 ‰), which could be due to the role of the sponge holobiont and bacterial food in driving intense nitrogen cycling processes in sponges' tissue, helping to cope with the hypoxic conditions of the reef. Our study provides first insights to understand trophic interactions of CWC reefs under low-oxygen conditions.
publishDate 2023
dc.date.none.fl_str_mv 2023
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
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/343235
https://api.elsevier.com/content/abstract/scopus_id/85162649271
url http://hdl.handle.net/10261/343235
https://api.elsevier.com/content/abstract/scopus_id/85162649271
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/EC/H2020/818123
Scientific reports
Vinha, Beatriz; Rossi, Sergio; Gori, Andrea; Hanz, Ulrike; Pennetta, Antonio; De Benedetto, Giuseppe E; Mienis, Furu; Huvenne, Veerle A I; Hebbeln, Dierk; Wienberg, Claudia; Titschack, Jürgen; Freiwald, André; Piraino, Stefano; Orejas, Covadonga (2023): Carbon and nitrogen stable isotopes of benthic megafauna on the Angolan cold-water coral reefs (SE Atlantic). PANGAEA, https://doi.org/10.1594/PANGAEA.955091. http://hdl.handle.net/10261/343294.
https://doi.org/10.1038/s41598-023-37035-x
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Nature Publishing Group
publisher.none.fl_str_mv Nature Publishing Group
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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score 15.812429

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