Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula)

Fish passage at artificial barriers is necessary for the conservation of healthy fish stocks. The first barrier that migratory fish encounter when ascending the Ebro River is the Xerta Weir, where a pool-type fishway was constructed in 2008. From 2007 to 2010, boat electrofishing surveys were conducted in...

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Autores: Aparicio, Enric, Pintor, Cristina, Duran, María Concepción, Carmona Catot, Gerard
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:10256/7833
Acceso en línea:http://hdl.handle.net/10256/7833
Access Level:acceso abierto
Palabra clave:Peixos -- Protecció
Fishes -- Conservation
Peixos -- Migració
Peixos -- Migration
Enginyeria fluvial
River engineering
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spelling Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula)Aparicio, EnricPintor, CristinaDuran, María ConcepciónCarmona Catot, GerardPeixos -- ProteccióFishes -- ConservationPeixos -- MigracióPeixos -- MigrationEnginyeria fluvialRiver engineeringFish passage at artificial barriers is necessary for the conservation of healthy fish stocks. The first barrier that migratory fish encounter when ascending the Ebro River is the Xerta Weir, where a pool-type fishway was constructed in 2008. From 2007 to 2010, boat electrofishing surveys were conducted in the Ebro River downstream of the Xerta Weir to assess the potential pool of species that could use the fishway. Nine native and 12 exotic species were captured, the latter comprising 62 % of the relative abundance and 70 % of the biomass. A combination of video recording, electrofishing and trapping was used to assess the effectiveness of the fishway in facilitating the passage of fish. Eight species were detected using the fishway, of which five were native (Liza ramada, Anguilla anguilla, Barbus graellsii, Gobio lozanoi and Salaria fluviatilis) and three exotic (Alburnus alburnus, Cyprinus carpio and Rutilus rutilus). Only L. ramada used the fishway in substantial numbers. The rate of fish passage was the highest from June to August and decreased afterwards. The effectiveness of the fishway might be lowered by areas of turbulence within the fishway and by distraction flows from a nearby hydropower stationEl paso de peces a través de barreras artificiales es necesario para la conservación en buen estado de las poblaciones de peces. La primera barrera que los peces migratorios encuentran ascendiendo el Río Ebro es el Azud de Xerta, donde en 2008 se construyó una escala de peces del tipo de estanques sucesivos. Para determinar el conjunto de especies que potencialmente podrían usar la escala se llevaron a cabo muestreos mediante pesca eléctrica desde embarcación aguas abajo del azud. Nueve especies nativas y 12 exóticas fueron capturadas, representando estas últimas el 62 % de la abundancia relativa y el 70 % de la biomasa. Se usó una combinación de grabaciones de video, pesca eléctrica y trampeo para evaluar la efectividad de la escala de peces. Ocho especies fueron detectadas en la escala, de las cuales cinco eran nativas (Liza ramada, Anguilla anguilla, Barbus graellsii, Gobio lozanoi y Salaria fluviatilis) y tres exóticas (Alburnus alburnus, Cyprinus carpio y Rutilus rutilus). Sólo L. ramada usó la escala en un número destacado. La tasa de paso de peces fue más alta de Junio a Agosto y descendió posteriormente. La efectividad de la escala puede estar limitada por áreas de turbulencia dentro de la escala y caudales de distracción desde una central hidroeléctrica cercanaAsociación Ibérica de Limnología2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10256/7833http://hdl.handle.net/10256/7833© Limnetica, 2012, vol. 31, núm. 1, p. 37-46Articles publicats (D-CCAA)reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)Inglésinfo:eu-repo/semantics/altIdentifier/issn/0213-8409info:eu-repo/semantics/altIdentifier/eissn/1989-1806Tots els drets reservatsinfo:eu-repo/semantics/openAccessoai:recercat.cat:10256/78332026-05-29T05:05:01Z
dc.title.none.fl_str_mv Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula)
title Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula)
spellingShingle Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula)
Aparicio, Enric
Peixos -- Protecció
Fishes -- Conservation
Peixos -- Migració
Peixos -- Migration
Enginyeria fluvial
River engineering
title_short Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula)
title_full Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula)
title_fullStr Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula)
title_full_unstemmed Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula)
title_sort Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula)
dc.creator.none.fl_str_mv Aparicio, Enric
Pintor, Cristina
Duran, María Concepción
Carmona Catot, Gerard
author Aparicio, Enric
author_facet Aparicio, Enric
Pintor, Cristina
Duran, María Concepción
Carmona Catot, Gerard
author_role author
author2 Pintor, Cristina
Duran, María Concepción
Carmona Catot, Gerard
author2_role author
author
author
dc.subject.none.fl_str_mv Peixos -- Protecció
Fishes -- Conservation
Peixos -- Migració
Peixos -- Migration
Enginyeria fluvial
River engineering
topic Peixos -- Protecció
Fishes -- Conservation
Peixos -- Migració
Peixos -- Migration
Enginyeria fluvial
River engineering
description Fish passage at artificial barriers is necessary for the conservation of healthy fish stocks. The first barrier that migratory fish encounter when ascending the Ebro River is the Xerta Weir, where a pool-type fishway was constructed in 2008. From 2007 to 2010, boat electrofishing surveys were conducted in the Ebro River downstream of the Xerta Weir to assess the potential pool of species that could use the fishway. Nine native and 12 exotic species were captured, the latter comprising 62 % of the relative abundance and 70 % of the biomass. A combination of video recording, electrofishing and trapping was used to assess the effectiveness of the fishway in facilitating the passage of fish. Eight species were detected using the fishway, of which five were native (Liza ramada, Anguilla anguilla, Barbus graellsii, Gobio lozanoi and Salaria fluviatilis) and three exotic (Alburnus alburnus, Cyprinus carpio and Rutilus rutilus). Only L. ramada used the fishway in substantial numbers. The rate of fish passage was the highest from June to August and decreased afterwards. The effectiveness of the fishway might be lowered by areas of turbulence within the fishway and by distraction flows from a nearby hydropower station
publishDate 2012
dc.date.none.fl_str_mv 2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10256/7833
http://hdl.handle.net/10256/7833
url http://hdl.handle.net/10256/7833
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0213-8409
info:eu-repo/semantics/altIdentifier/eissn/1989-1806
dc.rights.none.fl_str_mv Tots els drets reservats
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Tots els drets reservats
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Asociación Ibérica de Limnología
publisher.none.fl_str_mv Asociación Ibérica de Limnología
dc.source.none.fl_str_mv © Limnetica, 2012, vol. 31, núm. 1, p. 37-46
Articles publicats (D-CCAA)
reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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