Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera
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/10198/21930 |
Resumo: | Freshwatermussels are undergoing rapid global declines due to habitat loss and fragmentation, among other factors, but little is known about the effects of small hydropower plants. Here we assessed the impact of small hydropower plants on the abundance and size structure of the imperilled pearl mussel Margaritifera margaritifera. For this, we sampled 66 sites in three Portuguese rivers (Mente, Rabaçal and Tuela) located upstreamand downstream of dams andwithin the reservoirs. Pearl musselswere significantly more abundant upstreamthan downstream of dams (97.4% more) or within reservoirs (98.5% more). In addition, juveniles were mostly found upstream of dams. The most significant environmental alterations that explained the observed patterns were related to changes in sediment characteristics (accumulation of fine sediments and organic matter in reservoirs) andwater chemistry, most notably suspended solids (highest values in reservoirs) and dissolved oxygen (lowest values in reservoirs). Overall, results show that small hydropower plants can deeply affect pearl mussel populations: specimens almost disappeared from the areas within the reservoirs and sites located downstream only retained adults without signs of recent recruitment. Future management measures devoted to the conservation of pearlmussels should take into account the results reported here to avoid the construction of newdamsin pearl mussel rivers; improve management of the river flow in downstream areas; and consider the decommissioning of dams in pearlmussel riverswith a particular attention devoted to the re-naturalization of river sections under the influence of the reservoir and downstream areas. |
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Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritiferaConservationDamsFreshwater musselsHabitat loss and fragmentationReservoirsUnionidsFreshwatermussels are undergoing rapid global declines due to habitat loss and fragmentation, among other factors, but little is known about the effects of small hydropower plants. Here we assessed the impact of small hydropower plants on the abundance and size structure of the imperilled pearl mussel Margaritifera margaritifera. For this, we sampled 66 sites in three Portuguese rivers (Mente, Rabaçal and Tuela) located upstreamand downstream of dams andwithin the reservoirs. Pearl musselswere significantly more abundant upstreamthan downstream of dams (97.4% more) or within reservoirs (98.5% more). In addition, juveniles were mostly found upstream of dams. The most significant environmental alterations that explained the observed patterns were related to changes in sediment characteristics (accumulation of fine sediments and organic matter in reservoirs) andwater chemistry, most notably suspended solids (highest values in reservoirs) and dissolved oxygen (lowest values in reservoirs). Overall, results show that small hydropower plants can deeply affect pearl mussel populations: specimens almost disappeared from the areas within the reservoirs and sites located downstream only retained adults without signs of recent recruitment. Future management measures devoted to the conservation of pearlmussels should take into account the results reported here to avoid the construction of newdamsin pearl mussel rivers; improve management of the river flow in downstream areas; and consider the decommissioning of dams in pearlmussel riverswith a particular attention devoted to the re-naturalization of river sections under the influence of the reservoir and downstream areas.This work was supported by: i) POSEUR-03-2215-FC-000096 and ICNF funds under project CP01-MARG-QUERCUS/2018; ii) Project Reviving Douro Basin funded by MAVA, Fondation pour la Nature and iii) European Investment Funds by FEDER/COMPETE/POCI – Operational Competitiveness and Internationalization Program, under Project POCI-01-0145-FEDER-006958 and National Funds by FCT - Portuguese Foundation for Science and Technology, under the projects UID/AGR/ 04033/2013 and UID/AGR/00690/2019. FCT also support MLL with a doctoral grant (SFRH/BD/115728/2016).Biblioteca Digital do IPBSousa, RonaldoFerreira, AndréCarvalho, FranciscoLopes-Lima, ManuelVarandas, SimoneTeixeira, AmílcarGallardo, Belinda2020-05-07T10:44:30Z20202020-05-02T09:44:41Z2020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10198/21930engSousa, Ronaldo; Ferreira, André; Carvalho, Francisco; Lopes-Lima, Manuel; Varandas, Simone; Teixeira, Amílcar; Gallardo, Belinda (2020). Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera. Science of the Total Environment. ISSN 0048-9697. 719, p. 1-110048-9697cv-prod-133927310.1016/j.scitotenv.2020.1373611879-10262-s2.0-85080055136info: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:RCAAP2023-11-21T10:49:22Zoai:bibliotecadigital.ipb.pt:10198/21930Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:13:20.333263Repositório 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 |
Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera |
title |
Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera |
spellingShingle |
Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera Sousa, Ronaldo Conservation Dams Freshwater mussels Habitat loss and fragmentation Reservoirs Unionids |
title_short |
Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera |
title_full |
Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera |
title_fullStr |
Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera |
title_full_unstemmed |
Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera |
title_sort |
Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera |
author |
Sousa, Ronaldo |
author_facet |
Sousa, Ronaldo Ferreira, André Carvalho, Francisco Lopes-Lima, Manuel Varandas, Simone Teixeira, Amílcar Gallardo, Belinda |
author_role |
author |
author2 |
Ferreira, André Carvalho, Francisco Lopes-Lima, Manuel Varandas, Simone Teixeira, Amílcar Gallardo, Belinda |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Biblioteca Digital do IPB |
dc.contributor.author.fl_str_mv |
Sousa, Ronaldo Ferreira, André Carvalho, Francisco Lopes-Lima, Manuel Varandas, Simone Teixeira, Amílcar Gallardo, Belinda |
dc.subject.por.fl_str_mv |
Conservation Dams Freshwater mussels Habitat loss and fragmentation Reservoirs Unionids |
topic |
Conservation Dams Freshwater mussels Habitat loss and fragmentation Reservoirs Unionids |
description |
Freshwatermussels are undergoing rapid global declines due to habitat loss and fragmentation, among other factors, but little is known about the effects of small hydropower plants. Here we assessed the impact of small hydropower plants on the abundance and size structure of the imperilled pearl mussel Margaritifera margaritifera. For this, we sampled 66 sites in three Portuguese rivers (Mente, Rabaçal and Tuela) located upstreamand downstream of dams andwithin the reservoirs. Pearl musselswere significantly more abundant upstreamthan downstream of dams (97.4% more) or within reservoirs (98.5% more). In addition, juveniles were mostly found upstream of dams. The most significant environmental alterations that explained the observed patterns were related to changes in sediment characteristics (accumulation of fine sediments and organic matter in reservoirs) andwater chemistry, most notably suspended solids (highest values in reservoirs) and dissolved oxygen (lowest values in reservoirs). Overall, results show that small hydropower plants can deeply affect pearl mussel populations: specimens almost disappeared from the areas within the reservoirs and sites located downstream only retained adults without signs of recent recruitment. Future management measures devoted to the conservation of pearlmussels should take into account the results reported here to avoid the construction of newdamsin pearl mussel rivers; improve management of the river flow in downstream areas; and consider the decommissioning of dams in pearlmussel riverswith a particular attention devoted to the re-naturalization of river sections under the influence of the reservoir and downstream areas. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-05-07T10:44:30Z 2020 2020-05-02T09:44:41Z 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/10198/21930 |
url |
http://hdl.handle.net/10198/21930 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Sousa, Ronaldo; Ferreira, André; Carvalho, Francisco; Lopes-Lima, Manuel; Varandas, Simone; Teixeira, Amílcar; Gallardo, Belinda (2020). Small hydropower plants as a threat to the endangered pearl mussel Margaritifera margaritifera. Science of the Total Environment. ISSN 0048-9697. 719, p. 1-11 0048-9697 cv-prod-1339273 10.1016/j.scitotenv.2020.137361 1879-1026 2-s2.0-85080055136 |
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info:eu-repo/semantics/openAccess |
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openAccess |
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application/pdf |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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