Reproductive Allocation of the Habitat-Forming Intertidal Macroalga Ascophyllum nodosum Decreases at Its Northern Distribution Edge

The habitat-forming intertidal brown alga Ascophyllum nodosum has its colder northern distribution limit at 69°N in Disko Bay, Greenland. Its reproductive effort has never been assessed there despite expected northward expansion with climate change. We analyzed reproductive allocation and phenology...

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Detalles Bibliográficos
Autores: Albuquerque, Constança, Olesen, Birgit, Marbà, Núria, Krause Jensen, Dorte
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2025
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/413804
Acceso en línea:http://hdl.handle.net/10261/413804
https://api.elsevier.com/content/abstract/scopus_id/105017332830
Access Level:acceso abierto
Palabra clave:Temperature
Arctic ecology
Ascophyllum nodosum
Fucoids
Latitude gradient
Phenology
Reproductive ecology
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dc.title.none.fl_str_mv Reproductive Allocation of the Habitat-Forming Intertidal Macroalga Ascophyllum nodosum Decreases at Its Northern Distribution Edge
title Reproductive Allocation of the Habitat-Forming Intertidal Macroalga Ascophyllum nodosum Decreases at Its Northern Distribution Edge
spellingShingle Reproductive Allocation of the Habitat-Forming Intertidal Macroalga Ascophyllum nodosum Decreases at Its Northern Distribution Edge
Albuquerque, Constança
Temperature
Arctic ecology
Ascophyllum nodosum
Fucoids
Latitude gradient
Phenology
Reproductive ecology
title_short Reproductive Allocation of the Habitat-Forming Intertidal Macroalga Ascophyllum nodosum Decreases at Its Northern Distribution Edge
title_full Reproductive Allocation of the Habitat-Forming Intertidal Macroalga Ascophyllum nodosum Decreases at Its Northern Distribution Edge
title_fullStr Reproductive Allocation of the Habitat-Forming Intertidal Macroalga Ascophyllum nodosum Decreases at Its Northern Distribution Edge
title_full_unstemmed Reproductive Allocation of the Habitat-Forming Intertidal Macroalga Ascophyllum nodosum Decreases at Its Northern Distribution Edge
title_sort Reproductive Allocation of the Habitat-Forming Intertidal Macroalga Ascophyllum nodosum Decreases at Its Northern Distribution Edge
dc.creator.none.fl_str_mv Albuquerque, Constança
Olesen, Birgit
Marbà, Núria
Krause Jensen, Dorte
author Albuquerque, Constança
author_facet Albuquerque, Constança
Olesen, Birgit
Marbà, Núria
Krause Jensen, Dorte
author_role author
author2 Olesen, Birgit
Marbà, Núria
Krause Jensen, Dorte
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Agencia Estatal de Investigación (España)
European Commission
Ministry of Climate, Energy and Utilities (Denmark)
Aarhus Institute of Advanced Studies
Albuquerque, Constança [0009-0007-6173-2044]
Olesen, Birgit [0000-0002-8864-6716]
Marbà, Núria [0000-0002-8048-6789]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Temperature
Arctic ecology
Ascophyllum nodosum
Fucoids
Latitude gradient
Phenology
Reproductive ecology
topic Temperature
Arctic ecology
Ascophyllum nodosum
Fucoids
Latitude gradient
Phenology
Reproductive ecology
description The habitat-forming intertidal brown alga Ascophyllum nodosum has its colder northern distribution limit at 69°N in Disko Bay, Greenland. Its reproductive effort has never been assessed there despite expected northward expansion with climate change. We analyzed reproductive allocation and phenology at the northern distribution edge and across the geographical distribution range through field studies at three Greenland sites and one Danish site, supplemented with a literature survey. Because Ascophyllum is long-lived and forms annual segments through apical growth, old shoots sampled in the reproductive season revealed receptacle formation with segment age, from the tip to the base of the shoots. We confirmed the fertility of the northernmost populations, as zygotes formed from gametes. We found a consistent pattern of receptacle formation with larger receptacles closer to the canopy top and receptacle abundance following a quadratic relationship with segment age. Ascophyllum's reproductive allocation constitutes 33%-39% of its annual production in the Disko Bay and increases towards southern, warmer latitudes. Reproductive phenology also varies significantly with latitude and temperature, showing a 4.5-day delay in the reproduction peak for every degree northward and a 14-day delay with every 1°C decrease in temperature. The carbon flux released from the reproductive structures to the surrounding Arctic ecosystem at the end of the reproductive season was significant, amounting to 212-827 g C m-2 year-1 in Greenland, which should be considered in future productivity assessments. Synthesis: Our results indicate different life-history strategies at the opposing distribution edges and stress the importance of temperature as a regulator of Ascophyllum reproduction. Arctic warming will likely enhance reproductive output and stimulate an earlier onset of reproduction. Furthermore, the significant contribution from sexual reproduction to the annual carbon production (26%-41% in Greenland) highlighted its importance to the Arctic detrital community.
publishDate 2025
dc.date.none.fl_str_mv 2025
2026
2026
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/10261/413804
https://api.elsevier.com/content/abstract/scopus_id/105017332830
url http://hdl.handle.net/10261/413804
https://api.elsevier.com/content/abstract/scopus_id/105017332830
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023/CEX2021-001198
info:eu-repo/grantAgreement/EC/H2020/869154
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1002/ece3.72141
https://doi.org/10.1002/ece3.72141
Sí
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eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons
publisher.none.fl_str_mv John Wiley & Sons
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 Reproductive Allocation of the Habitat-Forming Intertidal Macroalga Ascophyllum nodosum Decreases at Its Northern Distribution EdgeAlbuquerque, ConstançaOlesen, BirgitMarbà, NúriaKrause Jensen, DorteTemperatureArctic ecologyAscophyllum nodosumFucoidsLatitude gradientPhenologyReproductive ecologyThe habitat-forming intertidal brown alga Ascophyllum nodosum has its colder northern distribution limit at 69°N in Disko Bay, Greenland. Its reproductive effort has never been assessed there despite expected northward expansion with climate change. We analyzed reproductive allocation and phenology at the northern distribution edge and across the geographical distribution range through field studies at three Greenland sites and one Danish site, supplemented with a literature survey. Because Ascophyllum is long-lived and forms annual segments through apical growth, old shoots sampled in the reproductive season revealed receptacle formation with segment age, from the tip to the base of the shoots. We confirmed the fertility of the northernmost populations, as zygotes formed from gametes. We found a consistent pattern of receptacle formation with larger receptacles closer to the canopy top and receptacle abundance following a quadratic relationship with segment age. Ascophyllum's reproductive allocation constitutes 33%-39% of its annual production in the Disko Bay and increases towards southern, warmer latitudes. Reproductive phenology also varies significantly with latitude and temperature, showing a 4.5-day delay in the reproduction peak for every degree northward and a 14-day delay with every 1°C decrease in temperature. The carbon flux released from the reproductive structures to the surrounding Arctic ecosystem at the end of the reproductive season was significant, amounting to 212-827 g C m-2 year-1 in Greenland, which should be considered in future productivity assessments. Synthesis: Our results indicate different life-history strategies at the opposing distribution edges and stress the importance of temperature as a regulator of Ascophyllum reproduction. Arctic warming will likely enhance reproductive output and stimulate an earlier onset of reproduction. Furthermore, the significant contribution from sexual reproduction to the annual carbon production (26%-41% in Greenland) highlighted its importance to the Arctic detrital community.This research was supported by funding allocated to the Greenland Ecosystem Monitoring programme (GEM), specifically MarineBasis Nuuk and Disko. We also received funding the EU Horizon 2020 programme (FACE-IT, The Future of Arctic Coastal Ecosystems—Identifying Transitions in Fjord Systems and Adjacent Coastal Areas, contract number 869154). NM was also supported by an Aarhus Institute of Advanced Studies visiting Fellowship 2023 and by the framework of the activities of the Spanish Government through the “Maria de Maeztu Centre of Excellence” accreditation to IMEDEA (CSIC-UIB) (CEX2021-001198).With funding from the Spanish government through the "Maria de Maeztu Centre of Excellence" accreditation (CEX2021-001198).Peer reviewedJohn Wiley & SonsMinisterio de Ciencia e Innovación (España)Agencia Estatal de Investigación (España)European CommissionMinistry of Climate, Energy and Utilities (Denmark)Aarhus Institute of Advanced StudiesAlbuquerque, Constança [0009-0007-6173-2044]Olesen, Birgit [0000-0002-8864-6716]Marbà, Núria [0000-0002-8048-6789]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202620262025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/413804https://api.elsevier.com/content/abstract/scopus_id/105017332830reponame: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 2021-2023/CEX2021-001198info:eu-repo/grantAgreement/EC/H2020/869154The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.1002/ece3.72141https://doi.org/10.1002/ece3.72141Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4138042026-05-22T06:33:51Z
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