Conservation status of the freshwater pearl mussel Margaritifera margaritifera in Portugal

Detalhes bibliográficos
Autor(a) principal: Sousa, Ronaldo Gomes
Data de Publicação: 2015
Outros Autores: Amorim, Ângela, Froufe, Elsa, Varandas, Simone, Teixeira, Amílcar, Lima, Manuel Lopes
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/49086
Resumo: Based on new information, the current conservation status of the freshwater pearl mussel Margaritifera margaritifera (Linnaeus, 1758) in Portugal is revised. Between 2010 and 2013 surveys were conducted in eight different rivers to assess distribution, abundance, size-frequency and preferential habitat of this species.Rivers Neiva, Cávado and Terva presented very low abundances (in the Cávado no specimens were found) and showed acute signs of ageing, calling into question the future survival of these populations. Although abundances were low in Rivers Bec¸ a, Paiva and Mente, juveniles were present and populations may improve their conservation status in the future, if appropriate management measures are applied. Rivers Rabac¸ al and Tuela presented the highest abundances of adults and juveniles and these two rivers have the highest potential for the conservation of freshwater pearl mussels in Portugal. However, these two populations have suffered severe declines in several stretches due to the construction of dams in recent years. Given that the Portuguese pearl mussel populations are at the southern range of the species distribution, their conservation should be a priority. This current description of the conservation status of M. margaritifera in Portugal can be used as a reference, and guide future research and management initiatives to better conserve this species.
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spelling Conservation status of the freshwater pearl mussel Margaritifera margaritifera in PortugalConservationMargaritifera margaritiferaPearl musselPortugalRiverThreatsScience & TechnologyBased on new information, the current conservation status of the freshwater pearl mussel Margaritifera margaritifera (Linnaeus, 1758) in Portugal is revised. Between 2010 and 2013 surveys were conducted in eight different rivers to assess distribution, abundance, size-frequency and preferential habitat of this species.Rivers Neiva, Cávado and Terva presented very low abundances (in the Cávado no specimens were found) and showed acute signs of ageing, calling into question the future survival of these populations. Although abundances were low in Rivers Bec¸ a, Paiva and Mente, juveniles were present and populations may improve their conservation status in the future, if appropriate management measures are applied. Rivers Rabac¸ al and Tuela presented the highest abundances of adults and juveniles and these two rivers have the highest potential for the conservation of freshwater pearl mussels in Portugal. However, these two populations have suffered severe declines in several stretches due to the construction of dams in recent years. Given that the Portuguese pearl mussel populations are at the southern range of the species distribution, their conservation should be a priority. This current description of the conservation status of M. margaritifera in Portugal can be used as a reference, and guide future research and management initiatives to better conserve this species.Financial support was provided by Portuguese Foundation for Science and Technology (FCT) and COMPETE funds—projects ECO-IAS (Contract: PTDC/AAC-AMB/116685/2010) and CONBI (Contract: PTDC/AAC-AMB/117688/2010). This study was also partially supported by the European Regional Development Fund (ERDF) through the COMPETE, under the project “PEstC/MAR/LA0015/2011”.info:eu-repo/semantics/publishedVersionElsevierUniversidade do MinhoSousa, Ronaldo GomesAmorim, ÂngelaFroufe, ElsaVarandas, SimoneTeixeira, AmílcarLima, Manuel Lopes20152015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/49086eng0075-95111873-585110.1016/j.limno.2014.07.004www.elsevier.com/locate/limnoinfo: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:RCAAP2023-07-21T11:56:43Zoai:repositorium.sdum.uminho.pt:1822/49086Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:46:21.122732Repositório 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 Conservation status of the freshwater pearl mussel Margaritifera margaritifera in Portugal
title Conservation status of the freshwater pearl mussel Margaritifera margaritifera in Portugal
spellingShingle Conservation status of the freshwater pearl mussel Margaritifera margaritifera in Portugal
Sousa, Ronaldo Gomes
Conservation
Margaritifera margaritifera
Pearl mussel
Portugal
River
Threats
Science & Technology
title_short Conservation status of the freshwater pearl mussel Margaritifera margaritifera in Portugal
title_full Conservation status of the freshwater pearl mussel Margaritifera margaritifera in Portugal
title_fullStr Conservation status of the freshwater pearl mussel Margaritifera margaritifera in Portugal
title_full_unstemmed Conservation status of the freshwater pearl mussel Margaritifera margaritifera in Portugal
title_sort Conservation status of the freshwater pearl mussel Margaritifera margaritifera in Portugal
author Sousa, Ronaldo Gomes
author_facet Sousa, Ronaldo Gomes
Amorim, Ângela
Froufe, Elsa
Varandas, Simone
Teixeira, Amílcar
Lima, Manuel Lopes
author_role author
author2 Amorim, Ângela
Froufe, Elsa
Varandas, Simone
Teixeira, Amílcar
Lima, Manuel Lopes
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Sousa, Ronaldo Gomes
Amorim, Ângela
Froufe, Elsa
Varandas, Simone
Teixeira, Amílcar
Lima, Manuel Lopes
dc.subject.por.fl_str_mv Conservation
Margaritifera margaritifera
Pearl mussel
Portugal
River
Threats
Science & Technology
topic Conservation
Margaritifera margaritifera
Pearl mussel
Portugal
River
Threats
Science & Technology
description Based on new information, the current conservation status of the freshwater pearl mussel Margaritifera margaritifera (Linnaeus, 1758) in Portugal is revised. Between 2010 and 2013 surveys were conducted in eight different rivers to assess distribution, abundance, size-frequency and preferential habitat of this species.Rivers Neiva, Cávado and Terva presented very low abundances (in the Cávado no specimens were found) and showed acute signs of ageing, calling into question the future survival of these populations. Although abundances were low in Rivers Bec¸ a, Paiva and Mente, juveniles were present and populations may improve their conservation status in the future, if appropriate management measures are applied. Rivers Rabac¸ al and Tuela presented the highest abundances of adults and juveniles and these two rivers have the highest potential for the conservation of freshwater pearl mussels in Portugal. However, these two populations have suffered severe declines in several stretches due to the construction of dams in recent years. Given that the Portuguese pearl mussel populations are at the southern range of the species distribution, their conservation should be a priority. This current description of the conservation status of M. margaritifera in Portugal can be used as a reference, and guide future research and management initiatives to better conserve this species.
publishDate 2015
dc.date.none.fl_str_mv 2015
2015-01-01T00:00:00Z
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/1822/49086
url http://hdl.handle.net/1822/49086
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0075-9511
1873-5851
10.1016/j.limno.2014.07.004
www.elsevier.com/locate/limno
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dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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