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Sediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of Madeira

2016-06-03Lecture Restricted access
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dc.contributor.authorAbreu, Roberto
dc.contributor.authorFigueira, Celso
dc.contributor.authorRomão, Daniela
dc.contributor.authorBrandão, João
dc.contributor.authorFreitas, Maria da Conceição
dc.contributor.authorAndrade, César
dc.contributor.authorCalado, Graça
dc.contributor.authorFerreira, Carmen
dc.contributor.authorCampos, Ana
dc.contributor.authorPrada, Susana
dc.date.accessioned2017-03-10T15:19:51Z
dc.date.available2017-03-10T15:19:51Z
dc.date.issued2016-06-03
dc.description.abstractBeach 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.pt_PT
dc.description.versionN/Apt_PT
dc.identifier.urihttp://hdl.handle.net/10400.18/4613
dc.language.isoporpt_PT
dc.peerreviewednopt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectBeach Sandpt_PT
dc.subjectMicroorganismspt_PT
dc.subjectGeologiapt_PT
dc.subjectMicrobiologia Areiaspt_PT
dc.subjectMadeirapt_PT
dc.subjectPortugalpt_PT
dc.subjectAgentes Microbianos e Ambientept_PT
dc.titleSediment characteristics and microbiological contamination of beach sand: a case–study in the archipelago of Madeirapt_PT
dc.typelecture
dspace.entity.typePublication
oaire.citation.conferencePlaceLisboa, Portugalpt_PT
oaire.citation.titleReunião Microareias 2016, INSA, 3 junho 2016pt_PT
rcaap.rightsembargoedAccesspt_PT
rcaap.typelecturept_PT

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