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dc.contributor.authorBurgin, Amy J.
dc.contributor.authorHamilton, Stephen K.
dc.identifier.citationBurgin, A. J. and Hamilton, S. K. (2007), Have we overemphasized the role of denitrification in aquatic ecosystems? A review of nitrate removal pathways. Frontiers in Ecology and the Environment, 5: 89–96. doi:10.1890/1540-9295(2007)5[89:HWOTRO]2.0.CO;2en_US
dc.description.abstractThe removal of nitrogen (N) in aquatic ecosystems is of great interest because excessive nitrate in groundwater and surface water is a growing problem. High nitrate loading degrades water quality and is linked to eutrophication and harmful algal blooms, especially in coastal marine waters. Past research on nitrate removal processes has emphasized plant or microbial uptake (assimilation) or respiratory denitrification by bacteria. The increasing application of stable isotopes and other tracer techniques to the study of nitrate removal has yielded a growing body of evidence for alternative, microbially mediated processes of nitrate transformation. These include dissimilatory (the reduction of nitrogen into other inorganic compounds, coupled to energy producing processes) reduction of nitrate to ammonium (DNRA), chemoautotrophic denitrification via sulfur or iron oxidation, and anaerobic ammonium oxidation (anammox), as well as abiotic nitrate removal processes. Here, we review evidence for the importance of alternative nitrate removal pathways in aquatic ecosystems and discuss how the possible prevalence of these pathways may alter views of N cycling and its controls. These alternative pathways are of particular importance for the management of excess N in the environment, especially in cases where nitrate is transformed to ammonium, a biologically available and less mobile N form, rather than to dinitrogen gas.en_US
dc.publisherEcological Society of Americaen_US
dc.rightsCopyright by the Ecological Society of Americaen_US
dc.titleHave we overemphasized the role of denitrification in aquatic ecosystems? A review of nitrate removal pathwaysen_US
kusw.kuauthorBurgin, A.J.
kusw.kudepartmentEvironmental Studies Programen_US
kusw.oanotesPer SHERPA/RoMEO 06/22/2016: Author's Pre-print: green tick author can archive pre-print (ie pre-refereeing) Author's Post-print: green tick author can archive post-print (ie final draft post-refereeing) Publisher's Version/PDF: green tick author can archive publisher's version/PDF General Conditions:

On author's personal website, employer's website, or institutional repository Publisher's version/PDF may be used Publisher copyright and source must be acknowledged (first page must state "Copyright by the Ecological Society of America," along with the full citation)
kusw.oaversionScholarly/refereed, publisher versionen_US
kusw.oapolicyThis item does not meet KU Open Access policy criteria.en_US

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