Pequena Central Hidrelétrica de Pandeiros e seu efeito sobre moluscos aquáticos invasores
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFMG |
Texto Completo: | http://hdl.handle.net/1843/72092 https://orcid.org/0000-0002-7218-9768 https://orcid.org/0000-0003-2341-4700 |
Resumo: | One of the biggest threats to biodiversity is the introduction of invasive species. These species threaten native species and cause great economic damage. Their presence is closely related to that of hydropower dams, which substantially alter river ecosystems and their biota. However, most studies of their ecological impacts are based on large dams and provide little information on the relationship between invasive species and small hydropower dams, which are much more abundant and numerous in Brazil. Our objective was to characterize the effects of Pandeiros small hydropower dam on the distribution of invasive mollusks in the Pandeiros River. We expected to nd sensitive native species associated with free- owing sites, while resistant and invasive taxa were expected at sites affected by the dam. We found that the structure of benthic macroinvertebrate assemblages was signi cantly different between the free- owing and dam-affected sites. In addition, we found that the dam and reservoir facilitated the colonization of two invasive species (Corbicula uminea and Melanoi-des tuberculata) because only in these sites they were found in high abundance. However, although the dam had signi cant effects on the structure of benthic macroinvertebrate assemblages, these effects were limited to sites near to the dam. Our results also highlight the need to understand the physical changes of habitat cau-sed by the presence and management of dams and reservoirs. We recommend the decommissioning of the Pandeiros small hydropower dam as an environmental management measure to reestablish habitat diversity for native species and as a mitigating measure for aquatic mollusk invasive species. |
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Pequena Central Hidrelétrica de Pandeiros e seu efeito sobre moluscos aquáticos invasoresBioindicadoresCorbicula flumíneaEspécies invasorasMacroinvertebrados bentônicosMelanoides tuberculataIndicadores biológicosMoluscoEspécies introduzidasMacroinvertebrados bentônicosOne of the biggest threats to biodiversity is the introduction of invasive species. These species threaten native species and cause great economic damage. Their presence is closely related to that of hydropower dams, which substantially alter river ecosystems and their biota. However, most studies of their ecological impacts are based on large dams and provide little information on the relationship between invasive species and small hydropower dams, which are much more abundant and numerous in Brazil. Our objective was to characterize the effects of Pandeiros small hydropower dam on the distribution of invasive mollusks in the Pandeiros River. We expected to nd sensitive native species associated with free- owing sites, while resistant and invasive taxa were expected at sites affected by the dam. We found that the structure of benthic macroinvertebrate assemblages was signi cantly different between the free- owing and dam-affected sites. In addition, we found that the dam and reservoir facilitated the colonization of two invasive species (Corbicula uminea and Melanoi-des tuberculata) because only in these sites they were found in high abundance. However, although the dam had signi cant effects on the structure of benthic macroinvertebrate assemblages, these effects were limited to sites near to the dam. Our results also highlight the need to understand the physical changes of habitat cau-sed by the presence and management of dams and reservoirs. We recommend the decommissioning of the Pandeiros small hydropower dam as an environmental management measure to reestablish habitat diversity for native species and as a mitigating measure for aquatic mollusk invasive species.Uma das maiores ameaças para a biodiversidade é a introdução de espécies invasoras. Essas espécies ameaçam as espécies nativas e causam grandes prejuízos econômicos. Sua presença está intimamente relacionada a represas hidrelétricas, pois estas alteram substancialmente os ecossistemas fluviais e sua biota. No entanto, a maioria dos estudos sobre seus impactos ecológicos é baseada em grandes barragens e fornece pouca informação sobre a relação de espécies invasoras com pequenas centrais hidrelétricas, que são muito mais abundantes e numerosas no Brasil. O objetivo desse trabalho foi caracterizar os efeitos da PCH Pandeiros sobre a distribuição de moluscos invasores no rio Pandeiros. Esperou-se encontrar espécies nativas sensíveis associadas aos locais de curso livre, enquanto os taxóns resistentes e invasores eram esperados em locais afetados pela barragem. Descobriu-se que a estrutura das assembleias de macroinvertebrados bentônicos foi significativamente diferente entre os sítios amostrais de curso livre e os afetados pela barragem. Além disso, descobriu-se que a represa e o reservatório facilitaram a colonização de duas espécies invasoras (Corbicula fluminea e Melanoides tuberculata) porque somente nesses locais elas foram encontradas em alta abundância. No entanto, embora a barragem tenha tido efeitos significativos na estrutura das assembleias de macroinvertebrados bentônicos, esses efeitos foram limitados a locais próximos à barragem. Os resultados também destacam a necessidade de compreender as mudanças físicas de habitat causadas pela presença e manejo de barragens e reservatórios a fio d’água. Recomenda-se o descomissionamento da PCH Pandeiros como medida de gestão ambiental para restabelecer a diversidade de habitats para espécies nativas e como medida mitigadora para as espécies invasoras de moluscos aquáticos.Universidade Federal de Minas GeraisBrasilICB - INSTITUTO DE CIÊNCIAS BIOLOGICASUFMG2024-07-29T20:17:17Z2024-07-29T20:17:17Z2019info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlepdfapplication/pdf2675-7893http://hdl.handle.net/1843/72092https://orcid.org/0000-0002-7218-9768https://orcid.org/0000-0003-2341-4700porMG.BiotaMarden LinaresMarcos Callisto de Faria Pereirainfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFMGinstname:Universidade Federal de Minas Gerais (UFMG)instacron:UFMG2024-07-29T20:17:18Zoai:repositorio.ufmg.br:1843/72092Repositório InstitucionalPUBhttps://repositorio.ufmg.br/oairepositorio@ufmg.bropendoar:2024-07-29T20:17:18Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG)false |
dc.title.none.fl_str_mv |
Pequena Central Hidrelétrica de Pandeiros e seu efeito sobre moluscos aquáticos invasores |
title |
Pequena Central Hidrelétrica de Pandeiros e seu efeito sobre moluscos aquáticos invasores |
spellingShingle |
Pequena Central Hidrelétrica de Pandeiros e seu efeito sobre moluscos aquáticos invasores Marden Linares Bioindicadores Corbicula flumínea Espécies invasoras Macroinvertebrados bentônicos Melanoides tuberculata Indicadores biológicos Molusco Espécies introduzidas Macroinvertebrados bentônicos |
title_short |
Pequena Central Hidrelétrica de Pandeiros e seu efeito sobre moluscos aquáticos invasores |
title_full |
Pequena Central Hidrelétrica de Pandeiros e seu efeito sobre moluscos aquáticos invasores |
title_fullStr |
Pequena Central Hidrelétrica de Pandeiros e seu efeito sobre moluscos aquáticos invasores |
title_full_unstemmed |
Pequena Central Hidrelétrica de Pandeiros e seu efeito sobre moluscos aquáticos invasores |
title_sort |
Pequena Central Hidrelétrica de Pandeiros e seu efeito sobre moluscos aquáticos invasores |
author |
Marden Linares |
author_facet |
Marden Linares Marcos Callisto de Faria Pereira |
author_role |
author |
author2 |
Marcos Callisto de Faria Pereira |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Marden Linares Marcos Callisto de Faria Pereira |
dc.subject.por.fl_str_mv |
Bioindicadores Corbicula flumínea Espécies invasoras Macroinvertebrados bentônicos Melanoides tuberculata Indicadores biológicos Molusco Espécies introduzidas Macroinvertebrados bentônicos |
topic |
Bioindicadores Corbicula flumínea Espécies invasoras Macroinvertebrados bentônicos Melanoides tuberculata Indicadores biológicos Molusco Espécies introduzidas Macroinvertebrados bentônicos |
description |
One of the biggest threats to biodiversity is the introduction of invasive species. These species threaten native species and cause great economic damage. Their presence is closely related to that of hydropower dams, which substantially alter river ecosystems and their biota. However, most studies of their ecological impacts are based on large dams and provide little information on the relationship between invasive species and small hydropower dams, which are much more abundant and numerous in Brazil. Our objective was to characterize the effects of Pandeiros small hydropower dam on the distribution of invasive mollusks in the Pandeiros River. We expected to nd sensitive native species associated with free- owing sites, while resistant and invasive taxa were expected at sites affected by the dam. We found that the structure of benthic macroinvertebrate assemblages was signi cantly different between the free- owing and dam-affected sites. In addition, we found that the dam and reservoir facilitated the colonization of two invasive species (Corbicula uminea and Melanoi-des tuberculata) because only in these sites they were found in high abundance. However, although the dam had signi cant effects on the structure of benthic macroinvertebrate assemblages, these effects were limited to sites near to the dam. Our results also highlight the need to understand the physical changes of habitat cau-sed by the presence and management of dams and reservoirs. We recommend the decommissioning of the Pandeiros small hydropower dam as an environmental management measure to reestablish habitat diversity for native species and as a mitigating measure for aquatic mollusk invasive species. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019 2024-07-29T20:17:17Z 2024-07-29T20:17:17Z |
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 |
2675-7893 http://hdl.handle.net/1843/72092 https://orcid.org/0000-0002-7218-9768 https://orcid.org/0000-0003-2341-4700 |
identifier_str_mv |
2675-7893 |
url |
http://hdl.handle.net/1843/72092 https://orcid.org/0000-0002-7218-9768 https://orcid.org/0000-0003-2341-4700 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
MG.Biota |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
pdf application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais Brasil ICB - INSTITUTO DE CIÊNCIAS BIOLOGICAS UFMG |
publisher.none.fl_str_mv |
Universidade Federal de Minas Gerais Brasil ICB - INSTITUTO DE CIÊNCIAS BIOLOGICAS UFMG |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFMG instname:Universidade Federal de Minas Gerais (UFMG) instacron:UFMG |
instname_str |
Universidade Federal de Minas Gerais (UFMG) |
instacron_str |
UFMG |
institution |
UFMG |
reponame_str |
Repositório Institucional da UFMG |
collection |
Repositório Institucional da UFMG |
repository.name.fl_str_mv |
Repositório Institucional da UFMG - Universidade Federal de Minas Gerais (UFMG) |
repository.mail.fl_str_mv |
repositorio@ufmg.br |
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1816829868660228096 |