Alexandrium minutum resting cyst distribution dynamics in a confined site

Special issue Phytoplankton Life-Cycles and Their Impacts on the Ecology of Harmful Algal Bloom.-- 12 pages, 12 figures, 1 table

Detalles Bibliográficos
Autores: Anglès, Silvia, Jordi, Antoni, Garcés, Esther, Basterretxea, Gotzon, Palanques, Albert
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2010
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/21732
Acceso en línea:http://hdl.handle.net/10261/21732
Access Level:acceso abierto
Palabra clave:Alexandrium minutum
Mediterranean Sea
Resting cyst
Resuspension
Sediment dynamics
Seiche
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spelling Alexandrium minutum resting cyst distribution dynamics in a confined siteAnglès, SilviaJordi, AntoniGarcés, EstherBasterretxea, GotzonPalanques, AlbertAlexandrium minutumMediterranean SeaResting cystResuspensionSediment dynamicsSeicheSpecial issue Phytoplankton Life-Cycles and Their Impacts on the Ecology of Harmful Algal Bloom.-- 12 pages, 12 figures, 1 tableThe life cycle of the toxic dinoflagellate Alexandrium minutum consists of an asexual stage, characterized by motile vegetative cells, and a sexual stage, a resting cyst that once formed remains dormant in the sediment. Insight into the factors that determine the distribution and abundance of resting cysts is essential to understanding the dynamics of the vegetative phase. In investigations carried out between January 2005 and January 2008 in Arenys de Mar harbor (northwestern Mediterranean Sea), the spatial and temporal distribution patterns of A. minutum resting cysts and of the sediments were studied during different bloom stages of the vegetative population. Maximum cyst abundance was recorded mainly in the innermost part of the harbor while the lowest abundance always occurred near the harbor entrance, consistent with the distribution of silt-clay sediment fractions. The tendency of cysts in sediments to increase after bloom periods was clearly associated with new cyst formation, while cyst abundance decreased during non-bloom periods. Exceptions to this trend were observed in stations dominated by the deposition of coarse sediments. High correlation between the presence of cysts and clays during non-bloom periods indicates that cysts behave as passive sediment particles and are influenced by the same hydrodynamic processes as clays. In Arenys de Mar, the main physical forcing affecting sediment resuspension is the seiche, which was studied using in situ measurements and numerical models to interpret the observed distribution patterns. During non-bloom periods, cyst losses were smaller when the seiche was more active and at the station where the seiche-induced current was larger. Thus, seiche-forced resuspension appears to reduce cyst losses by reallocating cysts back to the sediment surface such that their burial in the sediment is avoided. The observed vertical profiles of the cysts were consistent with this processThis study was financed by the EC-funded Research Project SEED (GOCE-CT-2005-003875). The work of A. Jordi and E. Garcés was supported by a postdoctoral grant and a Ramon y Cajal award, respectively, both from the Spanish Ministry of Science and InnovationPeer reviewedElsevier201020102010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersion5875 bytesapplication/pdfhttp://hdl.handle.net/10261/21732reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1016/j.dsr2.2009.09.002info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/217322026-05-22T06:33:51Z
dc.title.none.fl_str_mv Alexandrium minutum resting cyst distribution dynamics in a confined site
title Alexandrium minutum resting cyst distribution dynamics in a confined site
spellingShingle Alexandrium minutum resting cyst distribution dynamics in a confined site
Anglès, Silvia
Alexandrium minutum
Mediterranean Sea
Resting cyst
Resuspension
Sediment dynamics
Seiche
title_short Alexandrium minutum resting cyst distribution dynamics in a confined site
title_full Alexandrium minutum resting cyst distribution dynamics in a confined site
title_fullStr Alexandrium minutum resting cyst distribution dynamics in a confined site
title_full_unstemmed Alexandrium minutum resting cyst distribution dynamics in a confined site
title_sort Alexandrium minutum resting cyst distribution dynamics in a confined site
dc.creator.none.fl_str_mv Anglès, Silvia
Jordi, Antoni
Garcés, Esther
Basterretxea, Gotzon
Palanques, Albert
author Anglès, Silvia
author_facet Anglès, Silvia
Jordi, Antoni
Garcés, Esther
Basterretxea, Gotzon
Palanques, Albert
author_role author
author2 Jordi, Antoni
Garcés, Esther
Basterretxea, Gotzon
Palanques, Albert
author2_role author
author
author
author
dc.subject.none.fl_str_mv Alexandrium minutum
Mediterranean Sea
Resting cyst
Resuspension
Sediment dynamics
Seiche
topic Alexandrium minutum
Mediterranean Sea
Resting cyst
Resuspension
Sediment dynamics
Seiche
description Special issue Phytoplankton Life-Cycles and Their Impacts on the Ecology of Harmful Algal Bloom.-- 12 pages, 12 figures, 1 table
publishDate 2010
dc.date.none.fl_str_mv 2010
2010
2010
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/10261/21732
url http://hdl.handle.net/10261/21732
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1016/j.dsr2.2009.09.002
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 5875 bytes
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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 15,81155

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