Benthic prey quantity and quality in the main mudflat feeding areas of the Tagus Estuary: Implications for bird and fish populations

Estuaries are among the most productive environments in the coastal zone that may act as sink of pollutants. In this study we evaluated how levels of heavy metal contamination can be reflected in the macroinvertebrate communities of six Tagus Estuary mudflats, inferring their consequences to upper t...

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Detalles Bibliográficos
Autores: Cardoso, I, Granadeiro, JP, Cabral, H
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2008
País:México
Institución:UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA
Repositorio:Ciencias Marinas
Idioma:inglés
OAI Identifier:oai:cienciasmarinas.com.mx:article/1392
Acceso en línea:https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1392
Access Level:acceso abierto
Palabra clave:contamination
heavy metals
macrobenthic community
mudflats
Tagus Estuary
comunidad macrobéntica
contaminación
estuario del Tajo
metales pesados
planicies lodosas
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spelling Benthic prey quantity and quality in the main mudflat feeding areas of the Tagus Estuary: Implications for bird and fish populationsCantidad y calidad de las presas bénticas en las principales zonas de alimentación de las planicies lodosas del estuario del Tajo: Implicaciones para las poblaciones de aves y pecesCardoso, IGranadeiro, JPCabral, Hcontaminationheavy metalsmacrobenthic communitymudflatsTagus Estuarycomunidad macrobénticacontaminaciónestuario del Tajometales pesadosplanicies lodosasEstuaries are among the most productive environments in the coastal zone that may act as sink of pollutants. In this study we evaluated how levels of heavy metal contamination can be reflected in the macroinvertebrate communities of six Tagus Estuary mudflats, inferring their consequences to upper trophic levels. We used Shannon-Wiener’s diversity, Pielou’s evenness and Simpson’s dominance indices, and macroinvertebrate densities to characterize benthic communities at the sites that presented different metal contamination loads. Those stations with high levels of contamination presented a lower diversity but also the highest prey density. This study indicated that unhealthy areas can still perform their ecosystem function with costs that remain to be evaluated. The biodiversity can be impoverished compared with other less contaminated sites, but with regard to their utilization as feeding areas by birds and fishes this is not a limiting factor. For this particular function of the mudflats, prey availability is the main characteristic determining the choice of one particular site as a bird and fish feeding area that may not be affected by heavy metal contamination. Los estuarios son de los ambientes más productivos en la zona costera que pueden actuar como sumideros de contaminantes. En este estudio se evaluó cómo los niveles de contaminación por metales pesados pueden verse reflejados en las comunidades de macroinvertebrados de seis planicies lodosas del estuario del Tajo, infiriendo sus consecuencias en los niveles tróficos superiores. Se utilizaron los índices de diversidad de Shannon-Wiener, de igualdad de Pielou y de dominancia de Simpson, así como las densidades de macroinvertebrados para caracterizar las comunidades bentónicas en los sitios que presentaron diferentes cargas de contaminación por metales. Los sitios con altos niveles de contaminación presentaron una menor diversidad pero una mayor densidad de presas. Este estudio mostró que las zonas no saludables siguen desarrollando su función ecosistémica con costos aún por evaluar. La biodiversidad puede verse enpobrecida en comparación con otros sitios menos contaminados, sin embargo esto no es un factor limitante en cuanto a su utilización como área de alimentación para aves y peces. Para ello, la disponibilidad de presas es la característica principal que determina la selección de un sitio en particular como zona de alimentación para aves y peces, y puede no resultar afectada por la contaminación de metales pesados. Palabras clave: comunidad macrobéntica, contaminación, estuario del Tajo, metales pesados, planicies lodosas.Iniversidad Autónoma de Baja California2008-09-17info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionPeer-reviewed Article Artículo Arbitradoapplication/pdfhttps://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/139210.7773/cm.v34i3.1392Ciencias Marinas; Vol. 34 No. 3 (2008); 283–296Ciencias Marinas; Vol. 34 Núm. 3 (2008); 283–2962395-90530185-3880reponame:Ciencias Marinasinstname:UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIAinstacron:UABCenghttps://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1392/1828info:eu-repo/semantics/openAccessoai:cienciasmarinas.com.mx:article/13922024-08-22T17:01:39Z
dc.title.none.fl_str_mv Benthic prey quantity and quality in the main mudflat feeding areas of the Tagus Estuary: Implications for bird and fish populations
Cantidad y calidad de las presas bénticas en las principales zonas de alimentación de las planicies lodosas del estuario del Tajo: Implicaciones para las poblaciones de aves y peces
title Benthic prey quantity and quality in the main mudflat feeding areas of the Tagus Estuary: Implications for bird and fish populations
spellingShingle Benthic prey quantity and quality in the main mudflat feeding areas of the Tagus Estuary: Implications for bird and fish populations
Cardoso, I
contamination
heavy metals
macrobenthic community
mudflats
Tagus Estuary
comunidad macrobéntica
contaminación
estuario del Tajo
metales pesados
planicies lodosas
title_short Benthic prey quantity and quality in the main mudflat feeding areas of the Tagus Estuary: Implications for bird and fish populations
title_full Benthic prey quantity and quality in the main mudflat feeding areas of the Tagus Estuary: Implications for bird and fish populations
title_fullStr Benthic prey quantity and quality in the main mudflat feeding areas of the Tagus Estuary: Implications for bird and fish populations
title_full_unstemmed Benthic prey quantity and quality in the main mudflat feeding areas of the Tagus Estuary: Implications for bird and fish populations
title_sort Benthic prey quantity and quality in the main mudflat feeding areas of the Tagus Estuary: Implications for bird and fish populations
dc.creator.none.fl_str_mv Cardoso, I
Granadeiro, JP
Cabral, H
author Cardoso, I
author_facet Cardoso, I
Granadeiro, JP
Cabral, H
author_role author
author2 Granadeiro, JP
Cabral, H
author2_role author
author
dc.subject.none.fl_str_mv contamination
heavy metals
macrobenthic community
mudflats
Tagus Estuary
comunidad macrobéntica
contaminación
estuario del Tajo
metales pesados
planicies lodosas
topic contamination
heavy metals
macrobenthic community
mudflats
Tagus Estuary
comunidad macrobéntica
contaminación
estuario del Tajo
metales pesados
planicies lodosas
description Estuaries are among the most productive environments in the coastal zone that may act as sink of pollutants. In this study we evaluated how levels of heavy metal contamination can be reflected in the macroinvertebrate communities of six Tagus Estuary mudflats, inferring their consequences to upper trophic levels. We used Shannon-Wiener’s diversity, Pielou’s evenness and Simpson’s dominance indices, and macroinvertebrate densities to characterize benthic communities at the sites that presented different metal contamination loads. Those stations with high levels of contamination presented a lower diversity but also the highest prey density. This study indicated that unhealthy areas can still perform their ecosystem function with costs that remain to be evaluated. The biodiversity can be impoverished compared with other less contaminated sites, but with regard to their utilization as feeding areas by birds and fishes this is not a limiting factor. For this particular function of the mudflats, prey availability is the main characteristic determining the choice of one particular site as a bird and fish feeding area that may not be affected by heavy metal contamination. 
publishDate 2008
dc.date.none.fl_str_mv 2008-09-17
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
Artículo Arbitrado
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1392
10.7773/cm.v34i3.1392
url https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1392
identifier_str_mv 10.7773/cm.v34i3.1392
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://www.cienciasmarinas.com.mx/index.php/cmarinas/article/view/1392/1828
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 Iniversidad Autónoma de Baja California
publisher.none.fl_str_mv Iniversidad Autónoma de Baja California
dc.source.none.fl_str_mv Ciencias Marinas; Vol. 34 No. 3 (2008); 283–296
Ciencias Marinas; Vol. 34 Núm. 3 (2008); 283–296
2395-9053
0185-3880
reponame:Ciencias Marinas
instname:UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA
instacron:UABC
instname_str UNIVERSIDAD AUTÓNOMA DE BAJA CALIFORNIA
instacron_str UABC
institution UABC
reponame_str Ciencias Marinas
collection Ciencias Marinas
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15.811543

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