Relationship between rainfall, fecal pollution, antimicrobial resistance, and microbial diversity in an urbanized subtropical bay

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dc.contributor.authorPowers, Nicole
dc.contributor.authorWallgren, Hailey
dc.contributor.authorMarbach, Sandra
dc.contributor.authorTurner, Jeffrey
dc.creator.orcidhttps://orcid.org/ 0000-0002-9726-8649en_US
dc.creator.orcidhttps://orcid.org/0000-0002-9726-8649
dc.creator.orcidhttps://orcid.org/0000-0002-9726-8649https://orcid.org/ 0000-0002-9726-8649
dc.date.accessioned2022-02-22T20:47:03Z
dc.date.available2022-02-22T20:47:03Z
dc.date.issued2020-09-17
dc.description.abstractUrbanized bays are vulnerable to fecal bacterial pollution, and the extent of this pollution, in marine recreational waters, is commonly assessed by quantifying enterococcus concentrations. Recent reports have questioned the utility of enterococci as an indicator of fecal bacterial pollution in subtropical bays impaired by non-point source pollution, and enterococcus data alone cannot identify fecal bacterial sources (i.e., hosts). The purpose of this study was to assess relationships between rainfall, fecal bacterial pollution, antimicrobial resistance, and microbial diversity in an urbanized subtropical bay. Thus, a comprehensive bacterial source tracking (BST) study was conducted using a combination of traditional and modern BST methods. Findings show that rainfall was directly correlated with elevated enterococcus concentrations, including the increased prevalence of Enterococcus faecium, although it was not correlated with an increase in the prevalence of antimicrobial-resistant strains. Rainfall was also correlated with decreased microbial diversity. In contrast, neither rainfall nor enterococcus concentrations were directly correlated with the concentrations of three omnipresent host-associated fecal markers (i.e., human, canine, and gull). Notably, the human fecal marker (HF183) was inversely correlated with enterococcus concentrations, signifying that traditional enterococcus data alone are not an accurate proxy for human fecal waste in urbanized subtropical bays.en_US
dc.identifier.citationPowers, N.C., Wallgren, H.R., Marbach, S. and Turner, J.W., 2020. Relationship between rainfall, fecal pollution, antimicrobial resistance, and microbial diversity in an urbanized subtropical bay. Applied and Environmental Microbiology, 86(19), pp.e01229-20.en_US
dc.identifier.doihttps://doi.org/10.1128/AEM.01229-20
dc.identifier.urihttps://hdl.handle.net/1969.6/90182
dc.language.isoen_USen_US
dc.publisherASMen_US
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectrainfallen_US
dc.subjectfecal pollutionen_US
dc.subjectantimicrobial resistanceen_US
dc.subjectmicrobial diversityen_US
dc.subjecturbanized subtropicalen_US
dc.titleRelationship between rainfall, fecal pollution, antimicrobial resistance, and microbial diversity in an urbanized subtropical bayen_US
dc.typeArticleen_US

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