Passability of potamodromous species through a fish lift at a large hydropower plant (Touvedo, Portugal)
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.5/19793 |
Resumo: | River fragmentation by large hydropower plants (LHP) has been recognized as a major threat for potamodromous fish. Fishways have thus been built to partially restore connectivity, with fish lifts representing the most cost-effective type at high head obstacles. This study assessed the effectiveness with which a fish lift in a LHP on the River Lima (Touvedo, Portugal), allows potamodromous fish—Iberian barbel (Luciobarbus bocagei), Northern straight-mouth nase (Pseudochondrostoma duriense) and brown trout (Salmo trutta fario)- to migrate upstream. Most fish (79.5%) used the lift between summer and early-fall. Water temperature was the most significant predictor of both cyprinids’ movements, whereas mean daily flow was more important for trout. Movements differed according to peak-flow magnitude: nase (67.8%) made broader use of the lift in the absence of turbined flow, whereas a relevant proportion of barbel (44.8%) and trout (44.2%) passed when the powerhouse was operating at half (50 m3s-1) and full-load (100 m3s-1), respectively. Size-selectivity found for barbel and trout could reflect electrofishing bias towards smaller sizes. The comparison of daily abundance patterns in the river with fish lift records allowed the assessment of the lift’s effcacy, although biological requirements of target species must be considered. Results are discussed in the context of management strategies, with recommendations for future studies |
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Passability of potamodromous species through a fish lift at a large hydropower plant (Touvedo, Portugal)potamodromous fishmigrationlifthydropowerspecies managementRiver fragmentation by large hydropower plants (LHP) has been recognized as a major threat for potamodromous fish. Fishways have thus been built to partially restore connectivity, with fish lifts representing the most cost-effective type at high head obstacles. This study assessed the effectiveness with which a fish lift in a LHP on the River Lima (Touvedo, Portugal), allows potamodromous fish—Iberian barbel (Luciobarbus bocagei), Northern straight-mouth nase (Pseudochondrostoma duriense) and brown trout (Salmo trutta fario)- to migrate upstream. Most fish (79.5%) used the lift between summer and early-fall. Water temperature was the most significant predictor of both cyprinids’ movements, whereas mean daily flow was more important for trout. Movements differed according to peak-flow magnitude: nase (67.8%) made broader use of the lift in the absence of turbined flow, whereas a relevant proportion of barbel (44.8%) and trout (44.2%) passed when the powerhouse was operating at half (50 m3s-1) and full-load (100 m3s-1), respectively. Size-selectivity found for barbel and trout could reflect electrofishing bias towards smaller sizes. The comparison of daily abundance patterns in the river with fish lift records allowed the assessment of the lift’s effcacy, although biological requirements of target species must be considered. Results are discussed in the context of management strategies, with recommendations for future studiesMDPIRepositório da Universidade de LisboaMameri, DanielRivaes, RuiOliveira, João M.Pádua, JoãoFerreira, TeresaSantos, José M.2020-02-27T11:19:48Z20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.5/19793engSustainability 2020, 12, 17210.3390/su12010172info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-03-06T14:49:16Zoai:www.repository.utl.pt:10400.5/19793Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T17:04:39.123590Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Passability of potamodromous species through a fish lift at a large hydropower plant (Touvedo, Portugal) |
title |
Passability of potamodromous species through a fish lift at a large hydropower plant (Touvedo, Portugal) |
spellingShingle |
Passability of potamodromous species through a fish lift at a large hydropower plant (Touvedo, Portugal) Mameri, Daniel potamodromous fish migration lift hydropower species management |
title_short |
Passability of potamodromous species through a fish lift at a large hydropower plant (Touvedo, Portugal) |
title_full |
Passability of potamodromous species through a fish lift at a large hydropower plant (Touvedo, Portugal) |
title_fullStr |
Passability of potamodromous species through a fish lift at a large hydropower plant (Touvedo, Portugal) |
title_full_unstemmed |
Passability of potamodromous species through a fish lift at a large hydropower plant (Touvedo, Portugal) |
title_sort |
Passability of potamodromous species through a fish lift at a large hydropower plant (Touvedo, Portugal) |
author |
Mameri, Daniel |
author_facet |
Mameri, Daniel Rivaes, Rui Oliveira, João M. Pádua, João Ferreira, Teresa Santos, José M. |
author_role |
author |
author2 |
Rivaes, Rui Oliveira, João M. Pádua, João Ferreira, Teresa Santos, José M. |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Repositório da Universidade de Lisboa |
dc.contributor.author.fl_str_mv |
Mameri, Daniel Rivaes, Rui Oliveira, João M. Pádua, João Ferreira, Teresa Santos, José M. |
dc.subject.por.fl_str_mv |
potamodromous fish migration lift hydropower species management |
topic |
potamodromous fish migration lift hydropower species management |
description |
River fragmentation by large hydropower plants (LHP) has been recognized as a major threat for potamodromous fish. Fishways have thus been built to partially restore connectivity, with fish lifts representing the most cost-effective type at high head obstacles. This study assessed the effectiveness with which a fish lift in a LHP on the River Lima (Touvedo, Portugal), allows potamodromous fish—Iberian barbel (Luciobarbus bocagei), Northern straight-mouth nase (Pseudochondrostoma duriense) and brown trout (Salmo trutta fario)- to migrate upstream. Most fish (79.5%) used the lift between summer and early-fall. Water temperature was the most significant predictor of both cyprinids’ movements, whereas mean daily flow was more important for trout. Movements differed according to peak-flow magnitude: nase (67.8%) made broader use of the lift in the absence of turbined flow, whereas a relevant proportion of barbel (44.8%) and trout (44.2%) passed when the powerhouse was operating at half (50 m3s-1) and full-load (100 m3s-1), respectively. Size-selectivity found for barbel and trout could reflect electrofishing bias towards smaller sizes. The comparison of daily abundance patterns in the river with fish lift records allowed the assessment of the lift’s effcacy, although biological requirements of target species must be considered. Results are discussed in the context of management strategies, with recommendations for future studies |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-02-27T11:19:48Z 2020 2020-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.5/19793 |
url |
http://hdl.handle.net/10400.5/19793 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Sustainability 2020, 12, 172 10.3390/su12010172 |
dc.rights.driver.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 |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799131138515533824 |