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dc.contributor.authorClough, Timothy J.en
dc.contributor.authorBertram, Janet E.en
dc.contributor.authorSherlock, Robert R.en
dc.contributor.authorLeonard, Robert L.en
dc.contributor.authorNowicki, B.en
dc.date.accessioned2007-08-21T01:24:58Z
dc.date.issued2006en
dc.identifier.citationClough, T. J., Bertram, J. E.., Sherlock, R. R., Leonard, R. L., & Nowicki, B. L. (2006). Comparison of measured and EF5-r derived N₂O fluxes from a spring-fed river. Global Change Biology, 12, 352–363.en
dc.identifier.issn1354-1013en
dc.identifier.urihttps://hdl.handle.net/10182/84
dc.description.abstractThere is considerable uncertainty in the estimates of indirect N₂O emissions as defined by the Intergovernmental Panel on Climate Change's (IPCC) methodology. Direct measurements of N₂O yields and fluxes in aquatic river environments are sparse and more data are required to determine the role that rivers play in the global N₂O budget. The objectives of this research were to measure the N₂O fluxes from a spring-fed river, relate these fluxes to the dissolved N₂O concentrations and NO₃–N loading of the river, and to try and define the indirect emission factor (EF5-r) for the river. Gas bubble ebullition was observed at the river source with bubbles containing 7.9 µL N₂O L⁻¹. River NO₃–N and dissolved N₂O concentrations ranged from 2.5 to 5.3 mg L⁻¹ and 0.4 to 1.9 µg N₂O-N L⁻¹ respectively with N₂O saturation reaching 404%. Floating headspace chambers were used to sample N₂O fluxes. N₂O–N fluxes were significantly related to dissolved N₂O–N concentrations (r² = 30.6) but not to NO₃–N concentrations. The N₂O–N fluxes ranged from 38-501 µg m⁻² h⁻¹, averaging 171 µg m⁻² h⁻¹ (± Std. Dev. 85) overall. The measured N₂O–N fluxes equated to an EF5-r of only 6.6% of that calculated using the IPCC methodology, and this itself was considered to be an over-estimate due to the degassing of antecedent dissolved N₂O present in the groundwater that fed the river.en
dc.format.extent352-363en
dc.language.isoenen
dc.publisherBlackwell Publishingen
dc.relationThe original publication is available from - Blackwell Publishing - https://doi.org/10.1111/j.1365-2486.2005.01089.xen
dc.relation.urihttps://doi.org/10.1111/j.1365-2486.2005.01089.xen
dc.subjectindirect emissionsen
dc.subjectdenitrificationen
dc.subjectEF5en
dc.subjectemission factoren
dc.subjectnitrificationen
dc.subjectEcologyen
dc.titleComparison of measured and EF5-r derived N₂O fluxes from a spring-fed riveren
dc.typeJournal Article
dc.subject.marsdenFields of Research::300000 Agricultural, Veterinary and Environmental Sciences::300100 Soil and Water Sciencesen
lu.contributor.unitLincoln Universityen
lu.contributor.unitFaculty of Agriculture and Life Sciencesen
lu.contributor.unitDepartment of Soil and Physical Sciencesen
dc.identifier.doi10.1111/j.1365-2486.2005.01089.xen
dc.relation.isPartOfGlobal Change Biologyen
pubs.organisational-group/LU
pubs.organisational-group/LU/Agriculture and Life Sciences
pubs.organisational-group/LU/Agriculture and Life Sciences/SOILS
pubs.organisational-group/LU/Research Management Office
pubs.organisational-group/LU/Research Management Office/QE18
pubs.publication-statusPublisheden
pubs.volume12en
lu.identifier.orcid0000-0002-5978-5274


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