Grazing by meroplanktonic polychaete larvae may contribute to control the nanoplankton in the NW Mediterranean littoral: In situ experimental evidence

8 páginas, 5 figuras, 1 tabla

Detalles Bibliográficos
Autores: Martin, Daniel, Pinedo, Susana, Sardá, Rafael
Tipo de recurso: artículo
Fecha de publicación:1996
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/39747
Acceso en línea:http://hdl.handle.net/10261/39747
Access Level:acceso abierto
Palabra clave:Nanoplankton control
NW Mediterranean
RDS: Meroplankton
Polychaete larvae
Grazing
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spelling Grazing by meroplanktonic polychaete larvae may contribute to control the nanoplankton in the NW Mediterranean littoral: In situ experimental evidenceMartin, DanielPinedo, SusanaSardá, RafaelNanoplankton controlNW MediterraneanRDS: MeroplanktonPolychaete larvaeGrazing8 páginas, 5 figuras, 1 tablaIn this paper, we test the potential meroplankton grazing pressure on the nanoplanktonic community at the Bay of Blanes (NW Mediterranean). We used 2 abundant polychaete larvae (Prionospio malmgreni and Loimia medusa) cultured in situ in dialysis bags from which possible nanoplankton grazers other than larvae had been removed by filtration. Ingestion rates on chlorophyll a ranged from 0.001 to 0.04 and from 0.045 to 0.117 pg larva-' d" for P. malmgreniand L medusa, respectively. Ingestion rates on heterotrophic nanoflagellates (HNF) ranged from 2.4 to 32.3 x 103 and from 20.8 to 128.0 X 103 cells larva-' d-' for P. mahgreni and L. medusa, respectively. Scaling larval grazing to the natural plankton community results in: (1) a consumption on nanophytoplankton production ranging between 2.5 and ?.(l%, corresponding to percentages of nanophytoplankton loss in ambient waters of 2.3 to 6.4%, respectively; (2) a consumption on HNF production ranging between 3.1 and 12.4%, correspond~ ngto percentages of HNF loss in ambient waters of 2 9 to 11.7% , respectively. Although limited in time, the presence of planktotrophic larvae could cause an impact on nanophytoplankton populations which could be of similar relevance to that of holoplanktonic grazers, at least in shallow littoral waters of the Mediterranean Sea. Although potentially high, the estimated ingestion of nanophytoplankton by polychaete larvae was not sufficient to explain the major losses observed in the field, suggesting that these losses must be a result of consumption by other zooplanktonic grazers as well, and/or from processes other than herbivory. Contrary to nanophytoplankton and HNF, bacteria showed enhanced abundance in the presence of both polychaete larvae. Grazing by polychaete larvae caused a disruption of the grazing control exerted by HNF on bacteria. In conclusion, our results strongly indicate an important trophic role of meroplankton both as a direct control of the microbial holoplanktonic populations, and as a source of cascading effects in the microbial planktonic food webs.This is a contribution to the project AMB94-0746 funded by the C.1.C.Y.T of Spain. D.M. and S.P. were supported by a research contract of the C.S.I.C. of Spain and a predoctoral fellowship from the M.E.C. of Spain, respectively.Peer reviewedInter Research201120111996info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/39747reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/397472026-05-22T06:33:51Z
dc.title.none.fl_str_mv Grazing by meroplanktonic polychaete larvae may contribute to control the nanoplankton in the NW Mediterranean littoral: In situ experimental evidence
title Grazing by meroplanktonic polychaete larvae may contribute to control the nanoplankton in the NW Mediterranean littoral: In situ experimental evidence
spellingShingle Grazing by meroplanktonic polychaete larvae may contribute to control the nanoplankton in the NW Mediterranean littoral: In situ experimental evidence
Martin, Daniel
Nanoplankton control
NW Mediterranean
RDS: Meroplankton
Polychaete larvae
Grazing
title_short Grazing by meroplanktonic polychaete larvae may contribute to control the nanoplankton in the NW Mediterranean littoral: In situ experimental evidence
title_full Grazing by meroplanktonic polychaete larvae may contribute to control the nanoplankton in the NW Mediterranean littoral: In situ experimental evidence
title_fullStr Grazing by meroplanktonic polychaete larvae may contribute to control the nanoplankton in the NW Mediterranean littoral: In situ experimental evidence
title_full_unstemmed Grazing by meroplanktonic polychaete larvae may contribute to control the nanoplankton in the NW Mediterranean littoral: In situ experimental evidence
title_sort Grazing by meroplanktonic polychaete larvae may contribute to control the nanoplankton in the NW Mediterranean littoral: In situ experimental evidence
dc.creator.none.fl_str_mv Martin, Daniel
Pinedo, Susana
Sardá, Rafael
author Martin, Daniel
author_facet Martin, Daniel
Pinedo, Susana
Sardá, Rafael
author_role author
author2 Pinedo, Susana
Sardá, Rafael
author2_role author
author
dc.subject.none.fl_str_mv Nanoplankton control
NW Mediterranean
RDS: Meroplankton
Polychaete larvae
Grazing
topic Nanoplankton control
NW Mediterranean
RDS: Meroplankton
Polychaete larvae
Grazing
description 8 páginas, 5 figuras, 1 tabla
publishDate 1996
dc.date.none.fl_str_mv 1996
2011
2011
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/10261/39747
url http://hdl.handle.net/10261/39747
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
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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