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 conduc...
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ftuabarcelonapb:oai:ddd.uab.cat:108754 2023-06-18T03:36:02+02:00 Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula) Aparicio, Enric Pintor, Cristina Durán, Concha Carmona-Catot, Gerard 2012 application/pdf https://ddd.uab.cat/record/108754 eng eng Limnética Vol. 31, Núm. 1 (2012), p. 37-46 https://ddd.uab.cat/record/108754 urn:oai:ddd.uab.cat:108754 urn:articleid:02138409v31n1p37 open access Tots els drets reservats. https://rightsstatements.org/vocab/InC/1.0/ Moviment de peixes Escala de peixos Monotorització Fish movement Fishway Weir Video monitoring Movimiento de peces Escala de peces Azud Video Monitorización Article 2012 ftuabarcelonapb 2023-06-06T23:56:22Z 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. El 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 ... Article in Journal/Newspaper Anguilla anguilla Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB Weir ENVELOPE(177.167,177.167,-84.983,-84.983) |
institution |
Open Polar |
collection |
Universitat Autònoma de Barcelona: Dipòsit Digital de Documents de la UAB |
op_collection_id |
ftuabarcelonapb |
language |
English |
topic |
Moviment de peixes Escala de peixos Monotorització Fish movement Fishway Weir Video monitoring Movimiento de peces Escala de peces Azud Video Monitorización |
spellingShingle |
Moviment de peixes Escala de peixos Monotorització Fish movement Fishway Weir Video monitoring Movimiento de peces Escala de peces Azud Video Monitorización Aparicio, Enric Pintor, Cristina Durán, Concha Carmona-Catot, Gerard Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula) |
topic_facet |
Moviment de peixes Escala de peixos Monotorització Fish movement Fishway Weir Video monitoring Movimiento de peces Escala de peces Azud Video Monitorización |
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. El 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 ... |
format |
Article in Journal/Newspaper |
author |
Aparicio, Enric Pintor, Cristina Durán, Concha Carmona-Catot, Gerard |
author_facet |
Aparicio, Enric Pintor, Cristina Durán, Concha Carmona-Catot, Gerard |
author_sort |
Aparicio, Enric |
title |
Fish passage assessment at the most downstream barrier of the Ebro River (NE Iberian Peninsula) |
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) |
publishDate |
2012 |
url |
https://ddd.uab.cat/record/108754 |
long_lat |
ENVELOPE(177.167,177.167,-84.983,-84.983) |
geographic |
Weir |
geographic_facet |
Weir |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_relation |
Limnética Vol. 31, Núm. 1 (2012), p. 37-46 https://ddd.uab.cat/record/108754 urn:oai:ddd.uab.cat:108754 urn:articleid:02138409v31n1p37 |
op_rights |
open access Tots els drets reservats. https://rightsstatements.org/vocab/InC/1.0/ |
_version_ |
1769004354399895552 |