NPS pollution analysis in groundwater and streams of rural watersheds in western and southeastern Pampas, Argentina

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cic.isFulltexttruees
cic.isPeerReviewedtruees
cic.lugarDesarrolloCentro de Estudios Integrales de la Dinámica Exógena es
cic.versioninfo:eu-repo/semantics/submittedVersiones
dc.date.accessioned2017-10-23T14:10:21Z
dc.date.available2017-10-23T14:10:21Z
dc.identifier.urihttps://digital.cic.gba.gob.ar/handle/11746/6273
dc.titleNPS pollution analysis in groundwater and streams of rural watersheds in western and southeastern Pampas, Argentinaen
dc.typeDocumento de conferenciaes
dcterms.abstractNon-point source water pollution is a key question in rural watersheds and it needs to be studied in order to prevent damages to ground and surface water quality. The main goal of this study is to analyze nutrient and chemical loads in groundwater and streams in Pampa region, Argentina. For studying groundwater loads, a set of 19 observation wells were installed in 2011, in western Buenos Aires. The wells were located at three landscape positions (upper, middle and lower hill) in seven agricultural fields and groundwater samples were monthly collected. As for surface water, two watersheds located in southeastern Buenos Aires, were chosen: Napaleofu creek Watershed (34.000 hectares) and Quequen Grande River watershed (938.000 hectares). Daily water samples were taken from the main stream from October 2011 to May 2013, at both watersheds. Water Samples collected from wells and streams, were analyzed to determine N, and chemical loads. A group of 11 herbicides and one insecticide frequently used by farmers in the watershed were chosen for the study. Nitrogen and chemical concentrations were analyzed considering rainfall events and also compared to critical limits. Preliminary results are presented from a subset of samples since remaining samples are currently being processed in laboratory. As for NO3-N concentration, most of wells presented variable concentration depending on monthly precipitation and landscape position. Considering 10 mg/L NO3-N as a standard limit, 52% of the observations exceed this value mostly related to unusual precipitations events at winter 2012. Nitrate-Nconcentration in streamflow at Quequen Grande River and Napaleofu creek were on average 5 ppm. NPS Pollution modeling is a second goal of this on-going research. SWAT validation results are also presented for one of the watersheds under study.en
dcterms.creator.authorVazquez Amabile, Gabrieles
dcterms.creator.authorRicca, A. P.es
dcterms.creator.authorRojas, D.es
dcterms.creator.authorCristos, D.es
dcterms.creator.authorOrtiz-de-Zarate, M. L.es
dcterms.creator.authorBosch, N.es
dcterms.creator.authorPons, D.es
dcterms.creator.authorRodríguez Vagaría, Alfonsoes
dcterms.creator.authorGaspari, Fernandaes
dcterms.creator.authorFeler, M.V.es
dcterms.creator.authorMercuri, P. A.es
dcterms.creator.authorFlamenco, E.es
dcterms.creator.authorFeiguin, M. F.es
dcterms.extent13 p.es
dcterms.identifier.otherhttp://dx.doi.org/10.13031/aim.20131620759es
dcterms.identifier.urlRecurso Completoes
dcterms.isPartOf.issueASABE Annual International Meetinges
dcterms.isPartOf.seriesASABE Annual International Meetinges
dcterms.issued2013-07
dcterms.languageIngléses
dcterms.licenseAttribution 4.0 International (BY 4.0)es
dcterms.subjectNPS Pollutionen
dcterms.subjectGroundwater and surface wateren
dcterms.subjectPesticides and nutrientsen
dcterms.subjectAgricultureen
dcterms.subject.materiaGeologíaes

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