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dc.contributor.authorEger, A.en
dc.contributor.authorAlmond, Peter C.en
dc.contributor.authorCondron, Leo M.en
dc.date.accessioned2017-03-09T02:50:34Z
dc.date.available2013-01-04en
dc.date.issued2013-03en
dc.date.submitted2012-12-22en
dc.identifier.citationEger, A., Almond, P.C., & Condron, L.M. (2013). Phosphorus fertilization by active dust deposition in a super-humid, temperate environment – Soil phosphorus fractionation and accession processes. Global Biogeochemical Cycles, 27(1), 108-118. doi 10.1002/gbc.20019en
dc.identifier.issn0886-6236en
dc.identifier.urihttps://hdl.handle.net/10182/7867
dc.description.abstractThe inventory of soil phosphorus (P) is subject to significant changes over time. The main primary form, bedrock-derived apatite P, becomes progressively lost through leaching, or transformed into more immobile and less plant-accessible, secondary organic and mineral forms. Here we studied the rejuvenating effect of dust deposition on soil P along an active dust flux gradient downwind of a braided river. Along the gradient, we measured soil P fractions to 50 cm depth of six Spodosols and one Inceptisol, supplemented by tree foliage P concentrations. While an increasing dust flux correlates with a twofold increase of foliar P and soil organic P along the gradient, apatite P declines from ~50 to 3 g m⁻² and total P shows no response. Compared to dust-unaffected Spodosols, depth distribution of total P becomes increasingly uniform and organic P propagates deeper into the soil under dust flux. Further, the effect of topsoil P eluviation attenuates due to higher organic P content and the zone of high apatite P concentrations associated with un-weathered subsoil becomes progressively removed from the upper 50 cm. We interpret these patterns as being consistent with upbuilding pedogenesi and conclude that dust-derived mineral P is assimilated in the organic surface horizon and does not reach the mineral soil. Dust-derived mineral P is temporarily stored in the living biomass and returns to the soil with plant and microbial detritus as organic P, which is subsequently buried by further dust increments. We further conclude that (1) the efficiency of P fertilization of the ecosystem by dust accession is higher than through P advection in dust-unaffected Spodosols and (2) organic P may serve as an important source of labile P in a high-leaching environment. ©2013. American Geophysical Union. All Rights Reserved.en
dc.format.extent108-118en
dc.language.isoenen
dc.publisherJohn Wiley & Sons, Inc. on behalf of the American Geophysical Union (AGU)en
dc.relationThe original publication is available from - John Wiley & Sons, Inc. on behalf of the American Geophysical Union (AGU) - https://doi.org/10.1002/gbc.20019 - http://onlinelibrary.wiley.com/doi/10.1002/gbc.20019/abstracten
dc.relation.urihttps://doi.org/10.1002/gbc.20019en
dc.rights©2013. American Geophysical Union. All Rights Reserved.en
dc.subjectsoil phosphorusen
dc.subjectdust depositionen
dc.subjectbiosphere/atmosphere interactionsen
dc.subjectupbuilding pedogenesisen
dc.subjectNew Zealanden
dc.subjectMeteorology & Atmospheric Sciencesen
dc.titlePhosphorus fertilization by active dust deposition in a super-humid, temperate environment – Soil phosphorus fractionation and accession processesen
dc.typeJournal Article
lu.contributor.unitLincoln Universityen
lu.contributor.unitFaculty of Agriculture and Life Sciencesen
lu.contributor.unitDepartment of Soil and Physical Sciencesen
lu.contributor.uniten
lu.contributor.uniten
dc.identifier.doi10.1002/gbc.20019en
dc.subject.anzsrc0503 Soil Sciencesen
dc.subject.anzsrc0401 Atmospheric Sciencesen
dc.subject.anzsrc0402 Geochemistryen
dc.relation.isPartOfGlobal Biogeochemical Cyclesen
pubs.issue1en
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/2018 PBRF Staff group
pubs.publication-statusPublisheden
pubs.publisher-urlhttp://onlinelibrary.wiley.com/doi/10.1002/gbc.20019/abstracten
pubs.volume27en
dc.identifier.eissn1944-9224en
lu.identifier.orcid0000-0003-4203-1529
lu.identifier.orcid0000-0002-3082-994X


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