Natural and anthropogenic variations in a channelized water course in Centre of Portugal

The present study took place in the Mondego River, located in the Centre of Portugal. The lower sector of the river (Lower Mondego) is largely man-made due to regularization and rectification of the channel. The objective was to assess the impacts on the aquatic communities (fishes and benthic inver...

ver descrição completa

Detalhes bibliográficos
Autores: Silva-Santos, Pedro M., Oliveira, Simone V., Cortes, Rui M. V., Albuquerque, António C.
Tipo de documento: artigo
Data de publicação:2004
País:España
Recursos:Universitat Autònoma de Barcelona
Repositório:Dipòsit Digital de Documents de la UAB
Idioma:inglês
OAI Identifier:oai:ddd.uab.cat:26098
Acesso em linha:https://ddd.uab.cat/record/26098
Access Level:Acceso aberto
Palavra-chave:Invertebrats bentònics
Peixos
Canalització
Dinàmica fluvial
Riades
Invertebrados bentónicos
Peces
Canalización
Dinámica fluvial
Riadas
Benthic invertebrates
Fishes
Channelization
Fluvial dynamics
Floods
id ES_2e2e2f6fc32a6a16ff1a708a313d1848
oai_identifier_str oai:ddd.uab.cat:26098
network_acronym_str ES
network_name_str España
repository_id_str
spelling Natural and anthropogenic variations in a channelized water course in Centre of PortugalSilva-Santos, Pedro M.Oliveira, Simone V.Cortes, Rui M. V.Albuquerque, António C.Invertebrats bentònicsPeixosCanalitzacióDinàmica fluvialRiadesInvertebrados bentónicosPecesCanalizaciónDinámica fluvialRiadasBenthic invertebratesFishesChannelizationFluvial dynamicsFloodsThe present study took place in the Mondego River, located in the Centre of Portugal. The lower sector of the river (Lower Mondego) is largely man-made due to regularization and rectification of the channel. The objective was to assess the impacts on the aquatic communities (fishes and benthic invertebrates). Fauna inventories were performed in June and September of 2000 and 2001, together with habitat characterization. Three sampling sites were selected in this segment and compared to a reference site located upstream. It is concluded that the presence of structures such as submerged weirs and riprap, promoted the diversity, due to the physical complexity, which they introduced into the system. The dramatic flood peaks that occurred in the winter of 2000/01 also caused substantial changes in the fluvial dynamics and in the habitats: the large amount of suspended solids transported resulted in a riverbed of unstable fine materials, and in a subsequent biological impoverishment. However, both communities displayed a high resilience to these changes; the inter-annual differences being obscured by the seasonal ones on macroinvertebrate communities.El presente trabajo tuvo lugar en el río Mondego, localizado en el Centro de Portugal. El tramo bajo del río (Bajo Mondego) se encuentra intensamente transformado debido al regularización y rectificación del cauce. El objetivo fue evaluar los impactos en las comunidades acuáticas (peces e invertebrados bentónicos). Se realizaron inventarios de fauna en Junio y Septiembre de 2000 y 2001, junto con la caracterización del hábitat. Se seleccionaron tres localidades en este segmento fluvial y se compararon con una localidad de referencia localizada aguas arriba. Se concluye que la presencia de varias estructuras como los azudes sumergidos y enrocamentos, promovió la diversidad, derivado de la complejidad física que ellos introdujeron en el sistema. Las riadas dramáticas que ocurrieron en el invierno de 2000/01 también causaron cambios sustanciales en la dinámica fluvial y en los hábitats: la gran cantidad de sólidos en suspensión transportada dio lugar a un substrato constituido por materiales finos inestables, y al empobrecimiento biológico consecuente. Sin embargo, ambas comunidades mostraron una elevada resiliencia a estos eventos, quedando las diferencias interanuales ocultadas por las diferencias estaciónales en las comunidades de invertebrados. 22004-01-0120042004-01-01Articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://ddd.uab.cat/record/26098reponame:Dipòsit Digital de Documents de la UABinstname:Universitat Autònoma de BarcelonaInglésengopen accesshttp://purl.org/coar/access_right/c_abf2Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.https://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:ddd.uab.cat:260982026-06-06T12:50:31Z
dc.title.none.fl_str_mv Natural and anthropogenic variations in a channelized water course in Centre of Portugal
title Natural and anthropogenic variations in a channelized water course in Centre of Portugal
spellingShingle Natural and anthropogenic variations in a channelized water course in Centre of Portugal
Silva-Santos, Pedro M.
Invertebrats bentònics
Peixos
Canalització
Dinàmica fluvial
Riades
Invertebrados bentónicos
Peces
Canalización
Dinámica fluvial
Riadas
Benthic invertebrates
Fishes
Channelization
Fluvial dynamics
Floods
title_short Natural and anthropogenic variations in a channelized water course in Centre of Portugal
title_full Natural and anthropogenic variations in a channelized water course in Centre of Portugal
title_fullStr Natural and anthropogenic variations in a channelized water course in Centre of Portugal
title_full_unstemmed Natural and anthropogenic variations in a channelized water course in Centre of Portugal
title_sort Natural and anthropogenic variations in a channelized water course in Centre of Portugal
dc.creator.none.fl_str_mv Silva-Santos, Pedro M.
Oliveira, Simone V.
Cortes, Rui M. V.
Albuquerque, António C.
author Silva-Santos, Pedro M.
author_facet Silva-Santos, Pedro M.
Oliveira, Simone V.
Cortes, Rui M. V.
Albuquerque, António C.
author_role author
author2 Oliveira, Simone V.
Cortes, Rui M. V.
Albuquerque, António C.
author2_role author
author
author
dc.subject.none.fl_str_mv Invertebrats bentònics
Peixos
Canalització
Dinàmica fluvial
Riades
Invertebrados bentónicos
Peces
Canalización
Dinámica fluvial
Riadas
Benthic invertebrates
Fishes
Channelization
Fluvial dynamics
Floods
topic Invertebrats bentònics
Peixos
Canalització
Dinàmica fluvial
Riades
Invertebrados bentónicos
Peces
Canalización
Dinámica fluvial
Riadas
Benthic invertebrates
Fishes
Channelization
Fluvial dynamics
Floods
description The present study took place in the Mondego River, located in the Centre of Portugal. The lower sector of the river (Lower Mondego) is largely man-made due to regularization and rectification of the channel. The objective was to assess the impacts on the aquatic communities (fishes and benthic invertebrates). Fauna inventories were performed in June and September of 2000 and 2001, together with habitat characterization. Three sampling sites were selected in this segment and compared to a reference site located upstream. It is concluded that the presence of structures such as submerged weirs and riprap, promoted the diversity, due to the physical complexity, which they introduced into the system. The dramatic flood peaks that occurred in the winter of 2000/01 also caused substantial changes in the fluvial dynamics and in the habitats: the large amount of suspended solids transported resulted in a riverbed of unstable fine materials, and in a subsequent biological impoverishment. However, both communities displayed a high resilience to these changes; the inter-annual differences being obscured by the seasonal ones on macroinvertebrate communities.
publishDate 2004
dc.date.none.fl_str_mv 2
2004-01-01
2004
2004-01-01
dc.type.none.fl_str_mv Article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://ddd.uab.cat/record/26098
url https://ddd.uab.cat/record/26098
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
https://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Dipòsit Digital de Documents de la UAB
instname:Universitat Autònoma de Barcelona
instname_str Universitat Autònoma de Barcelona
reponame_str Dipòsit Digital de Documents de la UAB
collection Dipòsit Digital de Documents de la UAB
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869405386396663808
score 15,300724

Registros relacionados