Effects of Greater flamingo Phoenicopterus ruber on macrophytes, chironimds and turbidity in natural marshes in Doñana, SW Spain

Top predators and nutrient inputs are important factors determining the structure of freshwater aquatic systems. Greater flamingos (Phoenicopterus ruber) has been shown to destroy submerged macrophytes and may promote a switch from clear water to turbid water in the temporary marshes of Doñana Natio...

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Detalhes bibliográficos
Autores: Rodríguez-Pérez, Héctor, Green, Andy J.
Formato: artículo
Fecha de publicación:2007
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/37469
Acesso em linha:http://hdl.handle.net/10261/37469
Access Level:acceso abierto
Palavra-chave:Flamingos,
macrophytes
turbidity
nutrients,
chironomids
sediment resuspension
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spelling Effects of Greater flamingo Phoenicopterus ruber on macrophytes, chironimds and turbidity in natural marshes in Doñana, SW SpainRodríguez-Pérez, HéctorGreen, Andy J.Flamingos,macrophytesturbiditynutrients,chironomidssediment resuspensionTop predators and nutrient inputs are important factors determining the structure of freshwater aquatic systems. Greater flamingos (Phoenicopterus ruber) has been shown to destroy submerged macrophytes and may promote a switch from clear water to turbid water in the temporary marshes of Doñana National Park. We excluded flamingos from twenty 4x4 m plots distributed between two lucios (shallow seasonal lakes) within the marshes from February to July 2004. In July, we measured total suspended solids (TSS), macrophyte biomass and abundance and size of chironomid larvae in the twenty exclosures and in the twenty adjacent control plots. TSS was lower and macrophyte biomass was higher in exclosures, but not significantly so. Flamingos were found to cause a significant reduction in chironomid abundance and an increase in the proportion of larger larvae. The effect of exclusion was greater where the density of flamingos was highest. Comparison with the results from previous experiments suggest that the impact of flamingos are context dependent and largely influenced by bird density and/or factors related to macrophyte productivity. Water levels were especially high in 2004 owing to heavy rains, and flamingos may have stronger effects in years of lower rainfall.Peer reviewedSchweizerbart science publishers201120112007info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/37469reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://docserver.ingentaconnect.com/deliver/connect/schweiz/18639135/v170n2/s7.pdf?expires=1309779748&id=63422049&titleid=75002121&accname=Est+Biologica+de+Donana+-+CSIC+-+Biblioteca&checksum=E7C595AE912A1EC755822B217EADDBAAinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/374692026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effects of Greater flamingo Phoenicopterus ruber on macrophytes, chironimds and turbidity in natural marshes in Doñana, SW Spain
title Effects of Greater flamingo Phoenicopterus ruber on macrophytes, chironimds and turbidity in natural marshes in Doñana, SW Spain
spellingShingle Effects of Greater flamingo Phoenicopterus ruber on macrophytes, chironimds and turbidity in natural marshes in Doñana, SW Spain
Rodríguez-Pérez, Héctor
Flamingos,
macrophytes
turbidity
nutrients,
chironomids
sediment resuspension
title_short Effects of Greater flamingo Phoenicopterus ruber on macrophytes, chironimds and turbidity in natural marshes in Doñana, SW Spain
title_full Effects of Greater flamingo Phoenicopterus ruber on macrophytes, chironimds and turbidity in natural marshes in Doñana, SW Spain
title_fullStr Effects of Greater flamingo Phoenicopterus ruber on macrophytes, chironimds and turbidity in natural marshes in Doñana, SW Spain
title_full_unstemmed Effects of Greater flamingo Phoenicopterus ruber on macrophytes, chironimds and turbidity in natural marshes in Doñana, SW Spain
title_sort Effects of Greater flamingo Phoenicopterus ruber on macrophytes, chironimds and turbidity in natural marshes in Doñana, SW Spain
dc.creator.none.fl_str_mv Rodríguez-Pérez, Héctor
Green, Andy J.
author Rodríguez-Pérez, Héctor
author_facet Rodríguez-Pérez, Héctor
Green, Andy J.
author_role author
author2 Green, Andy J.
author2_role author
dc.subject.none.fl_str_mv Flamingos,
macrophytes
turbidity
nutrients,
chironomids
sediment resuspension
topic Flamingos,
macrophytes
turbidity
nutrients,
chironomids
sediment resuspension
description Top predators and nutrient inputs are important factors determining the structure of freshwater aquatic systems. Greater flamingos (Phoenicopterus ruber) has been shown to destroy submerged macrophytes and may promote a switch from clear water to turbid water in the temporary marshes of Doñana National Park. We excluded flamingos from twenty 4x4 m plots distributed between two lucios (shallow seasonal lakes) within the marshes from February to July 2004. In July, we measured total suspended solids (TSS), macrophyte biomass and abundance and size of chironomid larvae in the twenty exclosures and in the twenty adjacent control plots. TSS was lower and macrophyte biomass was higher in exclosures, but not significantly so. Flamingos were found to cause a significant reduction in chironomid abundance and an increase in the proportion of larger larvae. The effect of exclusion was greater where the density of flamingos was highest. Comparison with the results from previous experiments suggest that the impact of flamingos are context dependent and largely influenced by bird density and/or factors related to macrophyte productivity. Water levels were especially high in 2004 owing to heavy rains, and flamingos may have stronger effects in years of lower rainfall.
publishDate 2007
dc.date.none.fl_str_mv 2007
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/10261/37469
url http://hdl.handle.net/10261/37469
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://docserver.ingentaconnect.com/deliver/connect/schweiz/18639135/v170n2/s7.pdf?expires=1309779748&id=63422049&titleid=75002121&accname=Est+Biologica+de+Donana+-+CSIC+-+Biblioteca&checksum=E7C595AE912A1EC755822B217EADDBAA
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Schweizerbart science publishers
publisher.none.fl_str_mv Schweizerbart science publishers
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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