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dc.contributor.authorCoxon, Catherine
dc.date.accessioned2022-04-26T18:01:50Z
dc.date.available2022-04-26T18:01:50Z
dc.date.issued2022
dc.date.submitted2022en
dc.identifier.citationMcAleer, E., Coxon, C., Mellander, P.-E., Grant, J. & Richards, K., Patterns and drivers of groundwater and stream nitrate concentrations in intensively managed agricultural catchments, Water, 2022, 14, 9, 1388en
dc.identifier.otherY
dc.identifier.urihttp://hdl.handle.net/2262/98492
dc.descriptionPUBLISHEDen
dc.description.abstractThe environmental loss of nitrogen in agricultural landscapes has pervasive consequences, including human health implications, eutrophication, loss of habitat biodiversity and greenhouse gas emissions. The efficacy of mitigation strategies designed to control or prevent nitrate contamination of waterbodies requires an understanding of catchment scale pressures and processes. Groundwater and stream nitrate concentrations fluctuate over temporal scales ranging from the daily to the decadal. Identifying spatiotemporal trends and dominant drivers of nitrate in water is challenging as the drivers are intertwined. The effects of agronomic, meteorological and hydrogeological drivers on groundwater and stream nitrate were investigated over seven years in two well-drained agricultural catchments, dominated by tillage and grassland farming, respectively. A significant positive temporal trend in nitrate concentration was observed in the tillage catchment, whereas no long-term trend was observed in the grassland catchment. Agronomic, meteorological and hydrogeological factors were significantly related to temporal nitrate changes across both catchments. Clearly identifying the drivers influencing temporal changes in nitrate concentrations is critical to improving water quality. The study highlighted that to reduce groundwater nitrate levels in areas of high risk (thin soils, low clay content and shallow groundwater), nitrogen applications need to be reduced and/or tailored, particularly at times of restricted crop growth.en
dc.format.extent1388en
dc.language.isoenen
dc.relation.ispartofseriesWater;
dc.relation.ispartofseries14;
dc.relation.ispartofseries9;
dc.rightsYen
dc.subjectNitrateen
dc.subjectMultiple regressionen
dc.subjectAgronomyen
dc.subjectSoil moisture deficiten
dc.subjectGroundwater vulnerabilityen
dc.titlePatterns and drivers of groundwater and stream nitrate concentrations in intensively managed agricultural catchmentsen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/cecoxon
dc.identifier.rssinternalid242532
dc.identifier.doihttps://doi.org/10.3390/w14091388
dc.rights.ecaccessrightsopenAccess
dc.subject.TCDThemeSmart & Sustainable Planeten
dc.subject.TCDTagGROUNDWATER POLLUTIONen
dc.subject.TCDTagNITRATEen
dc.subject.TCDTagRivers/Streamsen
dc.subject.TCDTagWATER QUALITYen
dc.identifier.orcid_id0000-0002-2911-9115
dc.status.accessibleNen
dc.contributor.sponsorTeagascen


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