Investigating plankton size spectra, biomass, abundance, and community composition in the Subtropical Convergence Front in the Southern Ocean

The datasets presented in this study can be found in online repositories. The names of the repository/repositories and accession number(s) can be found below: https://www.bco-dmo.org/project/754878.

Detalles Bibliográficos
Autores: Yingling, Natalia, Selph, Karen E., Décima, Moira, Safi, Karl A., Gutiérrez-Rodríguez, Andrés, Fender, Christian K.;, Stukel, Michael R.
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:10261/397382
Acceso en línea:http://hdl.handle.net/10261/397382
https://api.elsevier.com/content/abstract/scopus_id/86000278743
Access Level:acceso abierto
Palabra clave:Epifluorescence microscopy
Plankton abundance
Plankton biomass
Plankton community composition
Size specific carbon to chlorophyll ratios
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network_name_str España
repository_id_str
dc.title.none.fl_str_mv Investigating plankton size spectra, biomass, abundance, and community composition in the Subtropical Convergence Front in the Southern Ocean
title Investigating plankton size spectra, biomass, abundance, and community composition in the Subtropical Convergence Front in the Southern Ocean
spellingShingle Investigating plankton size spectra, biomass, abundance, and community composition in the Subtropical Convergence Front in the Southern Ocean
Yingling, Natalia
Epifluorescence microscopy
Plankton abundance
Plankton biomass
Plankton community composition
Size specific carbon to chlorophyll ratios
title_short Investigating plankton size spectra, biomass, abundance, and community composition in the Subtropical Convergence Front in the Southern Ocean
title_full Investigating plankton size spectra, biomass, abundance, and community composition in the Subtropical Convergence Front in the Southern Ocean
title_fullStr Investigating plankton size spectra, biomass, abundance, and community composition in the Subtropical Convergence Front in the Southern Ocean
title_full_unstemmed Investigating plankton size spectra, biomass, abundance, and community composition in the Subtropical Convergence Front in the Southern Ocean
title_sort Investigating plankton size spectra, biomass, abundance, and community composition in the Subtropical Convergence Front in the Southern Ocean
dc.creator.none.fl_str_mv Yingling, Natalia
Selph, Karen E.
Décima, Moira
Safi, Karl A.
Gutiérrez-Rodríguez, Andrés
Fender, Christian K.;
Stukel, Michael R.
author Yingling, Natalia
author_facet Yingling, Natalia
Selph, Karen E.
Décima, Moira
Safi, Karl A.
Gutiérrez-Rodríguez, Andrés
Fender, Christian K.;
Stukel, Michael R.
author_role author
author2 Selph, Karen E.
Décima, Moira
Safi, Karl A.
Gutiérrez-Rodríguez, Andrés
Fender, Christian K.;
Stukel, Michael R.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministry of Business, Innovation and Employment (New Zealand)
National Institution for Water and Atmospheric (New Zealand)
National Science Foundation (US)
Gutiérrez-Rodríguez, Andrés [0000-0003-1274-3752]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Epifluorescence microscopy
Plankton abundance
Plankton biomass
Plankton community composition
Size specific carbon to chlorophyll ratios
topic Epifluorescence microscopy
Plankton abundance
Plankton biomass
Plankton community composition
Size specific carbon to chlorophyll ratios
description The datasets presented in this study can be found in online repositories. The names of the repository/repositories and accession number(s) can be found below: https://www.bco-dmo.org/project/754878.
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
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/10261/397382
https://api.elsevier.com/content/abstract/scopus_id/86000278743
url http://hdl.handle.net/10261/397382
https://api.elsevier.com/content/abstract/scopus_id/86000278743
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Gijón, (COG)
The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.3389/fmars.2025.1465125
https://doi.org/10.3389/fmars.2025.1465125
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
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
_version_ 1869423136771932160
spelling Investigating plankton size spectra, biomass, abundance, and community composition in the Subtropical Convergence Front in the Southern OceanYingling, NataliaSelph, Karen E.Décima, MoiraSafi, Karl A.Gutiérrez-Rodríguez, AndrésFender, Christian K.;Stukel, Michael R.Epifluorescence microscopyPlankton abundancePlankton biomassPlankton community compositionSize specific carbon to chlorophyll ratiosThe datasets presented in this study can be found in online repositories. The names of the repository/repositories and accession number(s) can be found below: https://www.bco-dmo.org/project/754878.Phytoplankton community structure is crucial to pelagic food webs and biogeochemical processes. Understanding size-based biomass distribution and carbon dynamics is essential for assessing their contributions to oceanic carbon cycling. This study quantifies plankton carbon (C) based size spectra, community composition, living to total particulate organic carbon (POC) and C:Chlorophyll a (C:Chla) ratios across biogeographical provinces in the Pacific sector of the Southern Ocean near the Subtropical Front (Chatham Rise, Aotearoa-New Zealand). We analyzed phytoplankton community composition using epifluorescence microscopy and flow cytometry, while quantifying size-fractionated Chl-a and POC to estimate normalized biomass, abundance size spectra, and C:Chla ratios. On average, subtropical-influenced waters had lower macronutrients, higher total Chla (1.1 ± 0.2 μg Chla L<sup>-1</sup>) and were dominated by nanoplankton, which accounted for 45% of the total plankton community (35.2 ± 4.6 μg C L<sup>-1</sup>). In contrast, picoplankton dominated plankton communities within the subantarctic-influenced and accounted for 35% of the total plankton community (18.5 ± 0.9 μg C L<sup>-1</sup>) in these water with higher macronutrient concentrations and lower total Chla concentrations (0.32 ± 0.06 μg Chla L<sup>-1</sup>). Subantarctic-influenced regions had steeper (more negative) slopes for the normalized biomass size spectrum (average = -1.00) compared to subtropical-influenced waters (average = -0.78) indicating greater relative dominance of small taxa. The subantarctic-influenced region had ~2-fold higher surface average C:Chla ratios compared to the subtropical-influenced region with picoplankton consistently having lower C:Chla ratios, due to low Chla values, than larger nano- or microplankton. Live plankton carbon contributed a median of 67% of total particulate organic carbon in the euphotic zone (non-living detritus comprises the remaining ~1/3), which is indicative of substantial primary production and rapid recycling by a strong microbial loop. Our study provides important insights into phytoplankton community structure, biomass distribution and their contribution to carbon sequestration in this region, highlighting the important roles of nanoplankton in subtropical productive waters and picoplankton in offshore subantarctic waters as well as a strong variation of C:Chla across different phytoplankton size classes.This study was made possible by funding from the Ministry for Business, Innovation and Employment (MBIE) of New Zealand, NIWA Coast and Oceans Food Webs (COES) and Ocean Flows (COOF), and the Royal Society of New Zealand Marsden Fast-track award to MD, and by U.S. National Science Foundation awards OCE- 1756610 and 1756465 to MS and KES.Peer reviewedFrontiers MediaMinistry of Business, Innovation and Employment (New Zealand)National Institution for Water and Atmospheric (New Zealand)National Science Foundation (US)Gutiérrez-Rodríguez, Andrés [0000-0003-1274-3752]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/397382https://api.elsevier.com/content/abstract/scopus_id/86000278743reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Gijón, (COG)The underlying dataset has been published as supplementary material of the article in the publisher platform at DOI https://doi.org/10.3389/fmars.2025.1465125https://doi.org/10.3389/fmars.2025.1465125Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3973822026-05-22T06:33:51Z
score 15,811543

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