Water and Sediment Microbial Quality of Mountain and Agricultural Streams

dc.contributor.author Pandey, Pramod
dc.contributor.author Soupir, Michelle
dc.contributor.author Soupir, Michelle
dc.contributor.author Wang, Yi
dc.contributor.author Cao, Wenlong
dc.contributor.author Biswas, Sagor
dc.contributor.author Vaddella, Venkata
dc.contributor.author Atwill, Robert
dc.contributor.author Merwade, Venkatesh
dc.contributor.author Pasternack, Gregory
dc.contributor.department Agricultural and Biosystems Engineering
dc.date 2018-07-18T15:54:30.000
dc.date.accessioned 2020-06-29T22:43:55Z
dc.date.available 2020-06-29T22:43:55Z
dc.date.copyright Mon Jan 01 00:00:00 UTC 2018
dc.date.issued 2018-07-12
dc.description.abstract <p>Increased public health risk caused by pathogen contamination in streams is a serious issue, and mitigating the risk requires improvement in existing microbial monitoring of streams. To improve understanding of microbial contamination in streams, we monitored Escherichia coli in stream water columns and streambed sediment. Two distinct streams and their subwatersheds were studied: (i) a mountain stream (Merced River, California), which represents pristine and wild conditions, and (ii) an agricultural stream (Squaw Creek, Iowa), which represents an agricultural setting (i.e., crop, manure application, cattle access). Stream water column and sediment samples were collected in multiple locations in the Merced River and Squaw Creek watersheds. Compared with the mountain stream, water column E. coli concentrations in the agricultural stream were considerably higher. In both mountain and agricultural streams, E. coli concentrations in bed sediment were higher than the water column, and principal component analysis indicates that land use affected water column E. coli levels significantly (p < 0.05). The cluster analysis showed grouping of subwatersheds for each basin, indicating unique land use features of each watershed. In general, water column E. coli levels in the mountain stream were lower than the USEPA’s existing water quality criteria for bacteria. However, the E. coli levels in the agricultural stream exceeded the USEPA’s microbial water quality criteria by several fold, which substantiated that increased agricultural activities, use of animal waste as fertilizers, and combined effect of rainfall and temperature may act as potential determining factors behind the elevated E. coli levels in agriculture streams.</p>
dc.description.comments <p>This article is published as Pandey, Pramod, Michelle L. Soupir, Yi Wang, Wenlong Cao, Sagor Biswas, Venkata Vaddella, Robert Atwill, Venkatesh Merwade, and Gregory Pasternack. "Water and Sediment Microbial Quality of Mountain and Agricultural Streams." <em>Journal of Environmental Quality</em> (2018). doi:<a href="http://dx.doi.org/10.2134/jeq2017.12.0483" target="_blank">10.2134/jeq2017.12.0483</a>. Posted with permission.</p>
dc.format.mimetype application/pdf
dc.identifier archive/lib.dr.iastate.edu/abe_eng_pubs/947/
dc.identifier.articleid 2230
dc.identifier.contextkey 12503338
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath abe_eng_pubs/947
dc.identifier.uri https://dr.lib.iastate.edu/handle/20.500.12876/1765
dc.language.iso en
dc.source.bitstream archive/lib.dr.iastate.edu/abe_eng_pubs/947/2018_Soupir_WaterSediment.pdf|||Sat Jan 15 02:33:24 UTC 2022
dc.source.uri 10.2134/jeq2017.12.0483
dc.subject.disciplines Agriculture
dc.subject.disciplines Bioresource and Agricultural Engineering
dc.subject.disciplines Environmental Monitoring
dc.subject.disciplines Environmental Public Health
dc.subject.disciplines Sedimentology
dc.subject.disciplines Water Resource Management
dc.title Water and Sediment Microbial Quality of Mountain and Agricultural Streams
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isAuthorOfPublication 04becbfb-7a97-4d96-a0dd-5514295530ee
relation.isOrgUnitOfPublication 8eb24241-0d92-4baf-ae75-08f716d30801
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