Variability of early autumn planktonic assemblages in the strait of Gibraltar: a regionalization analysis

The Strait of Gibraltar (SG) is the only connection of the Mediterranean Sea with the global circulation. The SG is an outstanding marine region to explore physical-biological coupling of pelagic communities due to its hydrodynamic complexity, including strong tidal forcing and marked spatial gradie...

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Detalles Bibliográficos
Autores: Valcárcel-Pérez, Nerea, Ramírez-Romero, E., García, C. M., González-Gordillo, J. I., Echevarría, F.
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/320211
Acceso en línea:http://hdl.handle.net/10261/320211
http://doi.org/10.12681/mms.27623
Access Level:acceso abierto
Palabra clave:plankton community
Centro Oceanográfico de Málaga
Medio Marino
Strait of Gibraltar
FlowCAM
Ecotaxa
image analysis
Size spectra
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spelling Variability of early autumn planktonic assemblages in the strait of Gibraltar: a regionalization analysisValcárcel-Pérez, NereaRamírez-Romero, E.García, C. M.González-Gordillo, J. I.Echevarría, F.plankton communityCentro Oceanográfico de MálagaMedio MarinoStrait of GibraltarFlowCAMEcotaxaimage analysisSize spectraThe Strait of Gibraltar (SG) is the only connection of the Mediterranean Sea with the global circulation. The SG is an outstanding marine region to explore physical-biological coupling of pelagic communities due to its hydrodynamic complexity, including strong tidal forcing and marked spatial gradients and fronts. The authors have unravelled the role of the fortnightly tidal scale (spring and neap tides) and local processes (upwelling and tidal-topographic mixing) that shape planktonic assemblages in the Strait. To do so, an oceanographic cruise was taken in early autumn 2008 with a high-resolution grid sampling and spring/neap tidal conditions. The planktonic features were captured using different automatic and semi-automatic techniques of plankton analyses (flow cytometry, FlowCAM, LOPC and Ecotaxa) that allowed covering a wide range of sizes of the community from pico- to mesoplankton. The SG was sectorized into two clusters based on the biogeochemical and main water column properties. Cluster 1 (CL1) covered shallow productive areas around Cape Trafalgar (CT). CL1 presented higher concentrations of chlorophyll and nutrients, and phytoplankton was mostly represented by Synechococcus and coastal diatoms while zooplankton had the highest percentage of meroplankton (31%). In contrast, cluster 2 (CL2) covered open ocean waters and presented more oligotrophic features, i.e. nitrogen-depleted waters with lower chlorophyll concentrations and a picoplankton community dominated by Prochlorococcus and holoplankton predominance in mesozooplankton. Under early autumn conditions with overall nutrient-depleted and stratified waters, the CT area emerges as an ecosystem where the constant tidal mixing and nutrients supply is coupled with an active production also being favored by high residence times and finally shaping a plankton community with unique features in the area.SI202320232022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/320211http://doi.org/10.12681/mms.27623reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésCentro Oceanográfico de Málagahttps://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/27623info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3202112026-05-22T06:33:51Z
dc.title.none.fl_str_mv Variability of early autumn planktonic assemblages in the strait of Gibraltar: a regionalization analysis
title Variability of early autumn planktonic assemblages in the strait of Gibraltar: a regionalization analysis
spellingShingle Variability of early autumn planktonic assemblages in the strait of Gibraltar: a regionalization analysis
Valcárcel-Pérez, Nerea
plankton community
Centro Oceanográfico de Málaga
Medio Marino
Strait of Gibraltar
FlowCAM
Ecotaxa
image analysis
Size spectra
title_short Variability of early autumn planktonic assemblages in the strait of Gibraltar: a regionalization analysis
title_full Variability of early autumn planktonic assemblages in the strait of Gibraltar: a regionalization analysis
title_fullStr Variability of early autumn planktonic assemblages in the strait of Gibraltar: a regionalization analysis
title_full_unstemmed Variability of early autumn planktonic assemblages in the strait of Gibraltar: a regionalization analysis
title_sort Variability of early autumn planktonic assemblages in the strait of Gibraltar: a regionalization analysis
dc.creator.none.fl_str_mv Valcárcel-Pérez, Nerea
Ramírez-Romero, E.
García, C. M.
González-Gordillo, J. I.
Echevarría, F.
author Valcárcel-Pérez, Nerea
author_facet Valcárcel-Pérez, Nerea
Ramírez-Romero, E.
García, C. M.
González-Gordillo, J. I.
Echevarría, F.
author_role author
author2 Ramírez-Romero, E.
García, C. M.
González-Gordillo, J. I.
Echevarría, F.
author2_role author
author
author
author
dc.subject.none.fl_str_mv plankton community
Centro Oceanográfico de Málaga
Medio Marino
Strait of Gibraltar
FlowCAM
Ecotaxa
image analysis
Size spectra
topic plankton community
Centro Oceanográfico de Málaga
Medio Marino
Strait of Gibraltar
FlowCAM
Ecotaxa
image analysis
Size spectra
description The Strait of Gibraltar (SG) is the only connection of the Mediterranean Sea with the global circulation. The SG is an outstanding marine region to explore physical-biological coupling of pelagic communities due to its hydrodynamic complexity, including strong tidal forcing and marked spatial gradients and fronts. The authors have unravelled the role of the fortnightly tidal scale (spring and neap tides) and local processes (upwelling and tidal-topographic mixing) that shape planktonic assemblages in the Strait. To do so, an oceanographic cruise was taken in early autumn 2008 with a high-resolution grid sampling and spring/neap tidal conditions. The planktonic features were captured using different automatic and semi-automatic techniques of plankton analyses (flow cytometry, FlowCAM, LOPC and Ecotaxa) that allowed covering a wide range of sizes of the community from pico- to mesoplankton. The SG was sectorized into two clusters based on the biogeochemical and main water column properties. Cluster 1 (CL1) covered shallow productive areas around Cape Trafalgar (CT). CL1 presented higher concentrations of chlorophyll and nutrients, and phytoplankton was mostly represented by Synechococcus and coastal diatoms while zooplankton had the highest percentage of meroplankton (31%). In contrast, cluster 2 (CL2) covered open ocean waters and presented more oligotrophic features, i.e. nitrogen-depleted waters with lower chlorophyll concentrations and a picoplankton community dominated by Prochlorococcus and holoplankton predominance in mesozooplankton. Under early autumn conditions with overall nutrient-depleted and stratified waters, the CT area emerges as an ecosystem where the constant tidal mixing and nutrients supply is coupled with an active production also being favored by high residence times and finally shaping a plankton community with unique features in the area.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/320211
http://doi.org/10.12681/mms.27623
url http://hdl.handle.net/10261/320211
http://doi.org/10.12681/mms.27623
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Centro Oceanográfico de Málaga
https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/27623
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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 15.811543

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