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dc.contributor.authorGoloran, Johnvie B
dc.contributor.authorChen, Chengrong
dc.contributor.authorPhillips, Ian R
dc.contributor.authorElser, James J
dc.date.accessioned2018-01-03T04:28:21Z
dc.date.available2018-01-03T04:28:21Z
dc.date.issued2015
dc.identifier.issn2045-2322
dc.identifier.doi10.1038/srep14811
dc.identifier.urihttp://hdl.handle.net/10072/142202
dc.description.abstractLarge quantities of sodic and alkaline bauxite residue are produced globally as a by-product from alumina refineries. Ecological stoichiometry of key elements [nitrogen (N) and phosphorus (P)] plays a critical role in establishing vegetation cover in bauxite residue sand (BRS). Here we examined how changes in soil chemical properties over time in rehabilitated sodic and alkaline BRS affected leaf N to P stoichiometry of native species used for rehabilitation. Both Ca and soil pH influenced the shifts in leaf N:P ratios of the study species as supported by consistently significant positive relationships (P < 0.001) between these soil indices and leaf N:P ratios. Shifts from N to P limitation were evident for N-fixing species, while N limitation was consistently experienced by non-N-fixing plant species. In older rehabilitated BRS embankments, soil and plant indices (Ca, Na, pH, EC, ESP and leaf N:P ratios) tended to align with those of the natural ecosystem, suggesting improved rehabilitation performance. These findings highlight that leaf N:P stoichiometry can effectively provide a meaningful assessment on understanding nutrient limitation and productivity of native species used for vegetating highly sodic and alkaline BRS, and is a crucial indicator for assessing ecological rehabilitation performance.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherNature Macmillan
dc.relation.ispartofpagefrom1
dc.relation.ispartofpageto12
dc.relation.ispartofissue14811
dc.relation.ispartofjournalScientific Reports
dc.relation.ispartofvolume5
dc.subject.fieldofresearchKnowledge and information management
dc.subject.fieldofresearchcode460912
dc.titleShifts in leaf N:P stoichiometry during rehabilitation in highly alkaline bauxite processing residue sand
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionVersion of Record (VoR)
gro.facultyGriffith Sciences, Griffith School of Environment
gro.rights.copyright© The Author(s) 2015. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
gro.hasfulltextFull Text
gro.griffith.authorChen, Chengrong
gro.griffith.authorGoloran, Johnvie B.


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