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dc.contributor.authorPremrov, Alina
dc.contributor.authorCoxon, Catherine E.
dc.contributor.authorHackett, Richard
dc.contributor.authorKirwan, Laura
dc.contributor.authorRichards, Karl G.
dc.date.accessioned2012-09-25T13:33:47Z
dc.date.available2012-09-25T13:33:47Z
dc.date.issued13/09/2012
dc.identifier.citationAlina Premrov, Catherine E. Coxon, Richard Hackett, Laura Kirwan, Karl G. Richards, Effects of over-winter green cover on groundwater nitrate and dissolved organic carbon concentrations beneath tillage land, Science of The Total Environment, Volume 438, 1 November 2012, Pages 144-153, DOI: 10.1016/j.scitotenv.2012.08.043en_GB
dc.identifier.issn0048-9697
dc.identifier.urihttp://hdl.handle.net/11019/184
dc.descriptionThis is the author’s version of a work that was accepted for publication in Science of the Total Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Science of The Total Environment, Volume 438, 1 November 2012, Pages 144–153. DOI:10.1016/j.scitotenv.2012.08.043
dc.descriptionpeer-revieweden_GB
dc.description.abstractApplication of over-winter green cover (e.g. cover crops) as a measure for reducing nitrate losses from tillage land has been frequently investigated, especially in the unsaturated zone. Monitoring of groundwater is less common in these studies. Studies on groundwater responses to different land treatments can be challenging because they can be influenced by various conditions, such as recharge, seasonal variations, and aquifer properties, often occurring at different time scales than surface water processes. The aim of this study was to evaluate groundwater nitrate (NO3−single bondN) and dissolved organic carbon (DOC) concentration responses to different over-winter green covers: mustard, natural regeneration and no cover. A field experiment was designed and run for three years on tillage land underlain by a vulnerable sand and gravel aquifer in the south-east of Ireland. Results showed that over-winter green cover growth on tillage land can be an effective measure to reduce groundwater NO3−single bondN concentrations. A significant decrease in groundwater NO3−single bondN concentrations was observed under the mustard cover compared to no cover. All treatments, including no cover, showed a decline in groundwater NO3−single bondN concentrations over time. A significant increase in groundwater DOC was also observed under the mustard cover. Although the overall groundwater DOC concentrations were low, the increased DOC occurrence in groundwater should be accounted for in carbon balances and could potentially enhance groundwater denitrification in cases where aquifer conditions may favour it.en_GB
dc.language.isoenen_GB
dc.publisherElsevieren_GB
dc.relation.ispartofseriesScience of the Total Environment;vol. 438
dc.subjectGroundwateren_GB
dc.subjectNitrateen_GB
dc.subjectDissolved organic carbonen_GB
dc.subjectOver-winter green coveren_GB
dc.subjectTillageen_GB
dc.titleEffects of over-winter green cover on groundwater nitrate and dissolved organic carbon concentrations beneath tillage landen_GB
dc.typeArticleen_GB
dc.identifier.rmisJCEV-0323-5605
dc.identifier.doihttp://dx.doi.org/10.1016/j.scitotenv.2012.08.043
refterms.dateFOA2018-01-12T07:39:04Z


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