Dynamic forcing of coastal plankton by nutrient imbalances and match-mismatch between nutrients and turbulence

19 pages, 8 figures, 2 tables

Detalles Bibliográficos
Autores: Romero, Estela, Peters, Francesc, Marrasé, Cèlia
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/59997
Acceso en línea:http://hdl.handle.net/10261/59997
Access Level:acceso abierto
Palabra clave:Eutrophication
Mediterranean Sea
Nitrate
Ammonium
Plankton
Experimental simulation
Coastal areas
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spelling Dynamic forcing of coastal plankton by nutrient imbalances and match-mismatch between nutrients and turbulenceRomero, EstelaPeters, FrancescMarrasé, CèliaEutrophicationMediterranean SeaNitrateAmmoniumPlanktonExperimental simulationCoastal areas19 pages, 8 figures, 2 tablesWe carried out 2 experimental simulations in which natural planktonic communities were subjected to a combination of turbulence and variable nutrient forcing. Nutrient addition was varied both in terms of total nutrient load and in the balance of elements. Unbalanced nutrient inputs (with regard to Redfield values) and varying nitrogen sources are frequent in coastal areas heavily exposed to human perturbations. The relative abundance of nitrate and ammonium has been related to shifts in the size distribution of the planktonic community, so we explored whether uneven inputs of ammonium and nitrate could be major factors driving plankton dynamics in coastal environments. The occasional uncoupling between turbulence and nutrient pulses is also a distinctive feature of nearshore waters compared with open ocean environments. Thus, we further tested the match–mismatch between nutrient enrichments and turbulent mixing. Both turbulence and nutrient inputs had a significant positive effect on the growth of planktonic organisms, with some synergistic effects. Shifts in community composition appeared to be mostly related to the interplay between turbulence and N partitioning. Under still conditions, ammonium-rich waters favoured small organisms and reinforced the microbial loop, whereas nitrate mostly favoured diatom growth. Turbulence added complexity to the final outcome, because mixing tended to favour large over small osmotrophs. Accordingly, the rapid growth of small autotrophs and heterotrophic bacteria in ammonium-rich waters may be partly counteracted by diatom increases if nutrient pulses are coupled with turbulent mixing; diatom bursts after nitrate enrichments may also be enhanced by concomitant turbulenceE.R. was supported by the Departament d’Educació i Universitats de la Generalitat de Catalunya and the European Social Fund. F.P. was a Ramón y Cajal scientist. This study was funded by the Spanish projects VARITEC (CTM2004-04442-C02), PIE CSIC (200830I101), STORM (CTM2009-09352) and ADEPT (CTM2011-23458)Peer reviewedInter Research201220122012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/59997reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.3354/meps09846info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/599972026-05-22T06:33:51Z
dc.title.none.fl_str_mv Dynamic forcing of coastal plankton by nutrient imbalances and match-mismatch between nutrients and turbulence
title Dynamic forcing of coastal plankton by nutrient imbalances and match-mismatch between nutrients and turbulence
spellingShingle Dynamic forcing of coastal plankton by nutrient imbalances and match-mismatch between nutrients and turbulence
Romero, Estela
Eutrophication
Mediterranean Sea
Nitrate
Ammonium
Plankton
Experimental simulation
Coastal areas
title_short Dynamic forcing of coastal plankton by nutrient imbalances and match-mismatch between nutrients and turbulence
title_full Dynamic forcing of coastal plankton by nutrient imbalances and match-mismatch between nutrients and turbulence
title_fullStr Dynamic forcing of coastal plankton by nutrient imbalances and match-mismatch between nutrients and turbulence
title_full_unstemmed Dynamic forcing of coastal plankton by nutrient imbalances and match-mismatch between nutrients and turbulence
title_sort Dynamic forcing of coastal plankton by nutrient imbalances and match-mismatch between nutrients and turbulence
dc.creator.none.fl_str_mv Romero, Estela
Peters, Francesc
Marrasé, Cèlia
author Romero, Estela
author_facet Romero, Estela
Peters, Francesc
Marrasé, Cèlia
author_role author
author2 Peters, Francesc
Marrasé, Cèlia
author2_role author
author
dc.subject.none.fl_str_mv Eutrophication
Mediterranean Sea
Nitrate
Ammonium
Plankton
Experimental simulation
Coastal areas
topic Eutrophication
Mediterranean Sea
Nitrate
Ammonium
Plankton
Experimental simulation
Coastal areas
description 19 pages, 8 figures, 2 tables
publishDate 2012
dc.date.none.fl_str_mv 2012
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/59997
url http://hdl.handle.net/10261/59997
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.3354/meps09846
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Inter Research
publisher.none.fl_str_mv Inter Research
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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