Sediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of Madeira
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , , , , , |
Tipo de documento: | Artigo de conferência |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.18/4613 |
Resumo: | Beach sand can harbour pathogenic and opportunistic microorganisms, as well as faecal indicator bacteria that influence directly the bathing water quality. Pathogenic and opportunistic microorganisms often raise concern of exposure during beach related recreational activities. In this work, three different types of sandy beaches (natural basaltic, natural calcareous and artificial calcareous) of the Archipelago of Madeira (Portugal) were sampled for bacterial and fungal contaminants and grain size distribution, during four years (2010-2013). Following an extreme weather event in 2010, the faecal indicator bacteria levels spiked, returning to base levels shortly thereafter. The same phenomenon occurred with fungi, where potentially pathogenic fungi were the dominant group. Yeast-like fungi and dermatophytes were, however, mainly associated to months of higher usage by recreational users. Statistical analysis showed higher contamination of sediment in artificial beaches compared to natural beaches and granulometry and chemical composition of sand did not influence in the microbial loads. Instead, bather density and the influence of coastal protection structures needed to maintain the volume of artificial beach sand regarding the removal potential of wave induced currents are obvious influencing factors. |
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Sediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of MadeiraBeach SandMicroorganismsGeologiaMicrobiologia AreiasMadeiraPortugalAgentes Microbianos e AmbienteBeach sand can harbour pathogenic and opportunistic microorganisms, as well as faecal indicator bacteria that influence directly the bathing water quality. Pathogenic and opportunistic microorganisms often raise concern of exposure during beach related recreational activities. In this work, three different types of sandy beaches (natural basaltic, natural calcareous and artificial calcareous) of the Archipelago of Madeira (Portugal) were sampled for bacterial and fungal contaminants and grain size distribution, during four years (2010-2013). Following an extreme weather event in 2010, the faecal indicator bacteria levels spiked, returning to base levels shortly thereafter. The same phenomenon occurred with fungi, where potentially pathogenic fungi were the dominant group. Yeast-like fungi and dermatophytes were, however, mainly associated to months of higher usage by recreational users. Statistical analysis showed higher contamination of sediment in artificial beaches compared to natural beaches and granulometry and chemical composition of sand did not influence in the microbial loads. Instead, bather density and the influence of coastal protection structures needed to maintain the volume of artificial beach sand regarding the removal potential of wave induced currents are obvious influencing factors.Repositório Científico do Instituto Nacional de SaúdeAbreu, RobertoFigueira, CelsoRomão, DanielaBrandão, JoãoFreitas, Maria da ConceiçãoAndrade, CésarCalado, GraçaFerreira, CarmenCampos, AnaPrada, Susana2017-03-10T15:19:51Z2016-06-032016-06-03T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectapplication/octet-streamhttp://hdl.handle.net/10400.18/4613porinfo:eu-repo/semantics/embargoedAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-20T15:40:25Zoai:repositorio.insa.pt:10400.18/4613Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:39:23.349732Repositório 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 |
Sediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of Madeira |
title |
Sediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of Madeira |
spellingShingle |
Sediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of Madeira Abreu, Roberto Beach Sand Microorganisms Geologia Microbiologia Areias Madeira Portugal Agentes Microbianos e Ambiente |
title_short |
Sediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of Madeira |
title_full |
Sediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of Madeira |
title_fullStr |
Sediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of Madeira |
title_full_unstemmed |
Sediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of Madeira |
title_sort |
Sediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of Madeira |
author |
Abreu, Roberto |
author_facet |
Abreu, Roberto Figueira, Celso Romão, Daniela Brandão, João Freitas, Maria da Conceição Andrade, César Calado, Graça Ferreira, Carmen Campos, Ana Prada, Susana |
author_role |
author |
author2 |
Figueira, Celso Romão, Daniela Brandão, João Freitas, Maria da Conceição Andrade, César Calado, Graça Ferreira, Carmen Campos, Ana Prada, Susana |
author2_role |
author author author author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório Científico do Instituto Nacional de Saúde |
dc.contributor.author.fl_str_mv |
Abreu, Roberto Figueira, Celso Romão, Daniela Brandão, João Freitas, Maria da Conceição Andrade, César Calado, Graça Ferreira, Carmen Campos, Ana Prada, Susana |
dc.subject.por.fl_str_mv |
Beach Sand Microorganisms Geologia Microbiologia Areias Madeira Portugal Agentes Microbianos e Ambiente |
topic |
Beach Sand Microorganisms Geologia Microbiologia Areias Madeira Portugal Agentes Microbianos e Ambiente |
description |
Beach sand can harbour pathogenic and opportunistic microorganisms, as well as faecal indicator bacteria that influence directly the bathing water quality. Pathogenic and opportunistic microorganisms often raise concern of exposure during beach related recreational activities. In this work, three different types of sandy beaches (natural basaltic, natural calcareous and artificial calcareous) of the Archipelago of Madeira (Portugal) were sampled for bacterial and fungal contaminants and grain size distribution, during four years (2010-2013). Following an extreme weather event in 2010, the faecal indicator bacteria levels spiked, returning to base levels shortly thereafter. The same phenomenon occurred with fungi, where potentially pathogenic fungi were the dominant group. Yeast-like fungi and dermatophytes were, however, mainly associated to months of higher usage by recreational users. Statistical analysis showed higher contamination of sediment in artificial beaches compared to natural beaches and granulometry and chemical composition of sand did not influence in the microbial loads. Instead, bather density and the influence of coastal protection structures needed to maintain the volume of artificial beach sand regarding the removal potential of wave induced currents are obvious influencing factors. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-06-03 2016-06-03T00:00:00Z 2017-03-10T15:19:51Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.18/4613 |
url |
http://hdl.handle.net/10400.18/4613 |
dc.language.iso.fl_str_mv |
por |
language |
por |
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info:eu-repo/semantics/embargoedAccess |
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embargoedAccess |
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RCAAP |
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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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