The impact of extreme turbidity events on the nursery function of a temperate European estuary with regulated freshwater inflow

14 páginas, 8 figuras.

Detalhes bibliográficos
Autores: González-Ortegón, Enrique, Subida, María Dulce, Cuesta, José A., Arias, Alberto M., Fernández-Delgado, Carlos, Drake, Pilar
Tipo de documento: artigo
Estado:Versión aceptada para publicación
Data de publicação:2010
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositório:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/43621
Acesso em linha:http://hdl.handle.net/10261/43621
Access Level:Acceso aberto
Palavra-chave:Nursery grounds
Estuaries
Anthropogenic disturbances
High turbidity events
Guadalquivir estuary
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spelling The impact of extreme turbidity events on the nursery function of a temperate European estuary with regulated freshwater inflowGonzález-Ortegón, EnriqueSubida, María DulceCuesta, José A.Arias, Alberto M.Fernández-Delgado, CarlosDrake, PilarNursery groundsEstuariesAnthropogenic disturbancesHigh turbidity eventsGuadalquivir estuary14 páginas, 8 figuras.Estuaries are used as nursery grounds by numerous marine species despite being usually subject to strong anthropogenic disturbances. Abundances of marine recruits (fish and crustacean decapods) and their main prey (mysids) were monitored by monthly sampling, from June 1997 to February 2009, in the lower reaches of the Guadalquivir estuary (SW Spain). During that period, unusually high and persistent turbidity events (HPTEs) were observed twice. Both HPTEs started with strong and sudden freshwater discharges after relatively long periods of very low freshwater inflow. Data from this time-series were used to test the hypothesis that HPTEs may negatively impact the nursery function of estuaries either by decreasing prey availability or by decreasing survival/arrival of marine recruits. During HPTEs, the commonest mysid (Mesopodopsis slabberi), a key species in the estuarine food web, showed a significant decrease in abundance. Likewise, some marine recruits that prey on M. slabberi and whose peaks of abundance within the estuary occur in summer–autumn (Engraulis encrasicolus and Pomadasys incisus) were less abundant during HPTEs. It is also suggested that HPTEs might have triggered a shift in the distribution of the most euryhaline prey (Neomysis integer) and predator (Dicentrarchus punctatus and Crangon crangon) species, towards more saline waters. This could have contributed to an increase in the inter-specific competition (for food/habitat) within the estuarine nursery area. The results discussed in this study call attention to the need to reduce as much as possible the anthropogenic pressures that may stimulate the occurrence of high and persistent turbidity events (HPTEs) in order to preserve the nursery function of temperate estuaries.The study was supported by the Spanish MCYT projectREN2000-0822 MAR, the Environmental and Fishery Agency of Autonomous Andalusia Government (“Consejería de Medio Ambiente” and “Consejería de Agricultura y Pesca: Junta de Andalucía”) and EU Fishery Grant.Peer reviewedElsevierGonzález-Ortegón, Enrique [0000-0002-0282-499X]Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201120112010info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionapplication/pdfhttp://hdl.handle.net/10261/43621reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.ecss.2010.01.013Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/436212026-05-22T06:33:51Z
dc.title.none.fl_str_mv The impact of extreme turbidity events on the nursery function of a temperate European estuary with regulated freshwater inflow
title The impact of extreme turbidity events on the nursery function of a temperate European estuary with regulated freshwater inflow
spellingShingle The impact of extreme turbidity events on the nursery function of a temperate European estuary with regulated freshwater inflow
González-Ortegón, Enrique
Nursery grounds
Estuaries
Anthropogenic disturbances
High turbidity events
Guadalquivir estuary
title_short The impact of extreme turbidity events on the nursery function of a temperate European estuary with regulated freshwater inflow
title_full The impact of extreme turbidity events on the nursery function of a temperate European estuary with regulated freshwater inflow
title_fullStr The impact of extreme turbidity events on the nursery function of a temperate European estuary with regulated freshwater inflow
title_full_unstemmed The impact of extreme turbidity events on the nursery function of a temperate European estuary with regulated freshwater inflow
title_sort The impact of extreme turbidity events on the nursery function of a temperate European estuary with regulated freshwater inflow
dc.creator.none.fl_str_mv González-Ortegón, Enrique
Subida, María Dulce
Cuesta, José A.
Arias, Alberto M.
Fernández-Delgado, Carlos
Drake, Pilar
author González-Ortegón, Enrique
author_facet González-Ortegón, Enrique
Subida, María Dulce
Cuesta, José A.
Arias, Alberto M.
Fernández-Delgado, Carlos
Drake, Pilar
author_role author
author2 Subida, María Dulce
Cuesta, José A.
Arias, Alberto M.
Fernández-Delgado, Carlos
Drake, Pilar
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv González-Ortegón, Enrique [0000-0002-0282-499X]
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Nursery grounds
Estuaries
Anthropogenic disturbances
High turbidity events
Guadalquivir estuary
topic Nursery grounds
Estuaries
Anthropogenic disturbances
High turbidity events
Guadalquivir estuary
description 14 páginas, 8 figuras.
publishDate 2010
dc.date.none.fl_str_mv 2010
2011
2011
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/10261/43621
url http://hdl.handle.net/10261/43621
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.ecss.2010.01.013
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 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 15,811543

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