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dc.contributor.author Bambic, Dustin G.
dc.contributor.author Kildare Hann, Beverly J.
dc.contributor.author Rajal, Verónica Beatriz
dc.contributor.author Sturm, Belinda S. M.
dc.contributor.author Minton, Chris B.
dc.contributor.author Schriewer, Alexander
dc.contributor.author Wuertz, Stefan
dc.date.available 2017-08-14T18:12:29Z
dc.date.issued 2015-02
dc.identifier.citation Bambic, Dustin G.; Kildare Hann, Beverly J.; Rajal, Verónica Beatriz; Sturm, Belinda S. M.; Minton, Chris B.; et al.; Spatial and hydrologic variation of Bacteroidales, adenovirus and enterovirus in a semi-arid, wastewater effluent-impacted watershed; Elsevier; Water Research; 75; 2-2015; 83-94
dc.identifier.issn 0043-1354
dc.identifier.uri http://hdl.handle.net/11336/22305
dc.description.abstract Bacteroidales and viruses were contemporaneously measured during dry and wet weather conditions at a watershed-scale in a semi-arid watershed impacted by a mixture of agricultural runoff, municipal wastewater effluent and municipal runoff. The results highlight the presence of municipal wastewater effluent as a confounding factor for microbial source tracking (MST) studies, and thus data were segregated into groups based on whether they were impacted by wastewater effluent. In semi-arid environments such as the Calleguas Creek watershed, located in southern California, the relative contribution of municipal wastewater effluent is dependent on hydrology as storm events lead to conditions where agricultural and municipal stormwater dominate receiving waters (rather than municipal wastewater, which is the case during dry weather). As such, the approach to data segregation was dependent on hydrology/storm conditions. Storm events led to significant increases in ruminant- and dog-associated Bacteroidales concentrations, indicating that overland transport connects strong non-human fecal sources with surface waters. Because the dataset had a large number of non-detect samples, data handling included the Kaplan–Meir estimator and data were presented graphically in a manner that reflects the potential effect of detection limits. In surface water samples with virus detections, Escherichia coli concentrations were often below (in compliance with) the recreational water quality criteria. In fact, sites downstream of direct inputs of municipal wastewater effluent exhibited the lowest concentrations of E. coli, but the highest concentrations of human-associated Bacteroidales and highest detection rates of human viruses. The toolkit, comprised of the four Bacteroidales assays and human virus assays used, can be successfully applied to inform watershed managers seeking to comply with recreational water quality criteria. However, care should be taken when analyzing data to account for the effect of non-detect samples, sources with differing microbial viability, and diverging hydrologic conditions.
dc.format application/pdf
dc.language.iso eng
dc.publisher Elsevier
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject Microbial source tracking
dc.subject Bacteroidales
dc.subject Quantitative PCR
dc.subject Total maximum daily load (TMDL)
dc.subject.classification Ingeniería Oceanográfica
dc.subject.classification Ingeniería del Medio Ambiente
dc.subject.classification INGENIERÍAS Y TECNOLOGÍAS
dc.title Spatial and hydrologic variation of Bacteroidales, adenovirus and enterovirus in a semi-arid, wastewater effluent-impacted watershed
dc.type info:eu-repo/semantics/article
dc.type info:ar-repo/semantics/artículo
dc.type info:eu-repo/semantics/publishedVersion
dc.date.updated 2016-12-16T16:41:39Z
dc.journal.volume 75
dc.journal.pagination 83-94
dc.journal.pais Países Bajos
dc.journal.ciudad Amsterdam
dc.description.fil Fil: Bambic, Dustin G.. University of California at Davis; Estados Unidos
dc.description.fil Fil: Kildare Hann, Beverly J.. University of California at Davis; Estados Unidos
dc.description.fil Fil: Rajal, Verónica Beatriz. University of California at Davis; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil Fil: Sturm, Belinda S. M.. University of California at Davis; Estados Unidos
dc.description.fil Fil: Minton, Chris B.. Larry Walker Associates; Estados Unidos
dc.description.fil Fil: Schriewer, Alexander. University of California at Davis; Estados Unidos
dc.description.fil Fil: Wuertz, Stefan. University of California at Davis; Estados Unidos. Nanyang Technological University; Singapur
dc.journal.title Water Research
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.watres.2015.02.023
dc.relation.alternativeid info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0043135415000962


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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Atribución-NoComercial-SinDerivadas 2.5 Argentina (CC BY-NC-ND 2.5 AR)