Cross-Shore Environmental Gradients in the Western Mediterranean Coast and Their Influence on Nearshore Phytoplankton Communities

13 pages, 10 figures, supplemental material https://www.frontiersin.org/articles/10.3389/fmars.2018.00078/full#supplementary-material

Detalles Bibliográficos
Autores: Basterretxea, Gotzon, Torres, F.J., Alacid, Elisabet, Anglès, Silvia, Camp, Jordi, Ferrera, Isabel, Flo Arcas, Eva, Font-Muñoz, Joan S., Jordi, Antoni, Reñé, Albert, Salgado, Paula M., Sampedro, Nagore, Garcés, Esther
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/165204
Acceso en línea:http://hdl.handle.net/10261/165204
Access Level:acceso abierto
Palabra clave:Nearshore Marine Ecosystems
Coastal transition zone
Microalgal blooms
Fine-scale variability
Plankton
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spelling Cross-Shore Environmental Gradients in the Western Mediterranean Coast and Their Influence on Nearshore Phytoplankton CommunitiesBasterretxea, GotzonTorres, F.J.Alacid, ElisabetAnglès, SilviaCamp, JordiFerrera, IsabelFlo Arcas, EvaFont-Muñoz, Joan S.Jordi, AntoniReñé, AlbertSalgado, Paula M.Sampedro, NagoreGarcés, EstherNearshore Marine EcosystemsCoastal transition zoneMicroalgal bloomsFine-scale variabilityPlankton13 pages, 10 figures, supplemental material https://www.frontiersin.org/articles/10.3389/fmars.2018.00078/full#supplementary-materialDuring summer, when oligotrophic conditions prevail offshore in the Mediterranean Sea, enhanced phytoplankton stripes are often observed in nearshore waters. In this study, we examine the cross-shore hydrographic variability and the associated microbial plankton communities in this zone. Detailed cross-shore underway sampling at 47 coastal sites spread along the Balearic and Catalan coasts revealed the widespread existence of narrow bands of warm and decreased salinity water beholding high phytoplankton biomass (up to 50-fold vs. offshore chlorophyll). Most intense physical and biological anomalies along these transects were generally constrained to the first hundred meters from the shoreline (i.e., a transition zone starting at ~400 m). We use Principal Component Analysis (PCA) and k-means cluster analysis to categorize temperature, salinity and chlorophyll (T, S and Chl) in three main types of cross-shore trends. Prevalence of exponential-shaped Chl trends was observed particularly in areas with shoreward directed winds (B1-type). The other two trends (B2 and B3) presented variations offthe coast produced by alongshore structures like river plumes, city outfalls and other features. Exponential-shaped cross-shore chlorophyll distribution (B1-type) accumulated 90% of the total transect Chl variation in the first 367 ± 190 m from the shoreline, whereas this distance was variable in the other profile types. Repeated daily sampling at one site with this transect typology revealed that wind forcing variations produced fast response on cross-shore T and S properties. Chl was less sensitive to changes at this time-scale. Phytoplankton communities exhibited site-dependent responses to the nearshore environment. Pico- and nanoplankton assemblages, typically dominating coastal assemblages during summer in the Mediterranean Sea, showed lower cross-shore variation. Conversely, larger response to nearshore conditions was observed in microplankton populations. These larger cells, represented by dinoflagellates, cryptophytes and diatoms, were able to actively exploit the nearshore conditions constituting an independent and distinct assemblage from that one prevailing offshore. Our results suggest that despite the importance of local-scale processes in determining biotic structure, some common patterns emerge providing clues on the main drivers of this nearshore nicheThis article is a result of the MINECO Grant GRADIENTS Fine-scale structure of cross-shore GRADIENTS along the Mediterranean coast (CTM2012-39476)Peer ReviewedFrontiers MediaMinisterio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2018201820182018info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/165204reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3389/fmars.2018.00078Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1652042026-05-22T06:33:51Z
dc.title.none.fl_str_mv Cross-Shore Environmental Gradients in the Western Mediterranean Coast and Their Influence on Nearshore Phytoplankton Communities
title Cross-Shore Environmental Gradients in the Western Mediterranean Coast and Their Influence on Nearshore Phytoplankton Communities
spellingShingle Cross-Shore Environmental Gradients in the Western Mediterranean Coast and Their Influence on Nearshore Phytoplankton Communities
Basterretxea, Gotzon
Nearshore Marine Ecosystems
Coastal transition zone
Microalgal blooms
Fine-scale variability
Plankton
title_short Cross-Shore Environmental Gradients in the Western Mediterranean Coast and Their Influence on Nearshore Phytoplankton Communities
title_full Cross-Shore Environmental Gradients in the Western Mediterranean Coast and Their Influence on Nearshore Phytoplankton Communities
title_fullStr Cross-Shore Environmental Gradients in the Western Mediterranean Coast and Their Influence on Nearshore Phytoplankton Communities
title_full_unstemmed Cross-Shore Environmental Gradients in the Western Mediterranean Coast and Their Influence on Nearshore Phytoplankton Communities
title_sort Cross-Shore Environmental Gradients in the Western Mediterranean Coast and Their Influence on Nearshore Phytoplankton Communities
dc.creator.none.fl_str_mv Basterretxea, Gotzon
Torres, F.J.
Alacid, Elisabet
Anglès, Silvia
Camp, Jordi
Ferrera, Isabel
Flo Arcas, Eva
Font-Muñoz, Joan S.
Jordi, Antoni
Reñé, Albert
Salgado, Paula M.
Sampedro, Nagore
Garcés, Esther
author Basterretxea, Gotzon
author_facet Basterretxea, Gotzon
Torres, F.J.
Alacid, Elisabet
Anglès, Silvia
Camp, Jordi
Ferrera, Isabel
Flo Arcas, Eva
Font-Muñoz, Joan S.
Jordi, Antoni
Reñé, Albert
Salgado, Paula M.
Sampedro, Nagore
Garcés, Esther
author_role author
author2 Torres, F.J.
Alacid, Elisabet
Anglès, Silvia
Camp, Jordi
Ferrera, Isabel
Flo Arcas, Eva
Font-Muñoz, Joan S.
Jordi, Antoni
Reñé, Albert
Salgado, Paula M.
Sampedro, Nagore
Garcés, Esther
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Nearshore Marine Ecosystems
Coastal transition zone
Microalgal blooms
Fine-scale variability
Plankton
topic Nearshore Marine Ecosystems
Coastal transition zone
Microalgal blooms
Fine-scale variability
Plankton
description 13 pages, 10 figures, supplemental material https://www.frontiersin.org/articles/10.3389/fmars.2018.00078/full#supplementary-material
publishDate 2018
dc.date.none.fl_str_mv 2018
2018
2018
2018
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/10261/165204
url http://hdl.handle.net/10261/165204
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3389/fmars.2018.00078
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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score 15,812429

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