The climate reconstruction potential of Acacia cambagei (gidgee) for semi-arid regions of Australia using stable isotopes and elemental abundances

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dc.contributor.authorWitt, GBen_AU
dc.contributor.authorEnglish, NBen_AU
dc.contributor.authorBalanzategui, Den_AU
dc.contributor.authorHua, Qen_AU
dc.contributor.authorGadd, PSen_AU
dc.contributor.authorHeijnis, Hen_AU
dc.contributor.authorBird, MIen_AU
dc.date.accessioned2020-03-25T21:40:18Zen_AU
dc.date.available2020-03-25T21:40:18Zen_AU
dc.date.issued2017-01-01en_AU
dc.description.abstractTo provide multi-centennial, annually-resolved records of climate for arid and semi-arid areas of Australia it is necessary to investigate the potential climate signals in tree species in this large region. Using a stable isotope and x-ray fluorescence approach to dendrochronology in Acacia cambagei, this study demonstrates short (10 years) proxies of temperature and precipitation are possible. Because rings in A. cambagei are difficult to see, precluding traditional dendrochronology, we used elemental abundances of Ca and Sr as an annual chronometer back to 1962. Radiocarbon analysis confirmed that our dating of wood from two trees. We compared δ13C and δ18O from the α-cellulose of the dated wood over the most recent 10 years (n = 10) to local climate records demonstrating significant relationships between δ18O and precipitation (r = −0.85, p < 0.002); mean monthly maximum temperature (r = 0.69, p < 0.03); and drought indexes (CRU scPDSI 0.5°, r = −0.89, p < 0.001) for February and March. Acacia cambagei may be useful in developing regional networks of climate proxies for drought. Using modern trees, in combination with architectural timbers, it may be possible to construct a multi-century, annually-resolved proxy-record of rainfall and temperature for semi-arid north-eastern Australia. © 2016 Elsevier Ltd.en_AU
dc.identifier.citationWitt, G. B., English, N. B., Balanzategui, D., Hua, Q., Gadd, P., Heijnis, H., & Bird, M. I. (2017). The climate reconstruction potential of Acacia cambagei (gidgee) for semi-arid regions of Australia using stable isotopes and elemental abundances. Journal of Arid Environments, 136, 19-27. doi:10.1016/j.jaridenv.2016.10.002en_AU
dc.identifier.govdoc8964en_AU
dc.identifier.issn0140-1963en_AU
dc.identifier.journaltitleJournal of Arid Environmentsen_AU
dc.identifier.pagination19-27en_AU
dc.identifier.urihttps://doi.org/10.1016/j.jaridenv.2016.10.002en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/9240en_AU
dc.identifier.volume136en_AU
dc.language.isoenen_AU
dc.publisherElsevier B.V.en_AU
dc.subjectStable isotopesen_AU
dc.subjectClimatic changeen_AU
dc.subjectAustraliaen_AU
dc.subjectDroughtsen_AU
dc.subjectTreesen_AU
dc.subjectArid landsen_AU
dc.subjectPrecipitationen_AU
dc.subjectRain wateren_AU
dc.titleThe climate reconstruction potential of Acacia cambagei (gidgee) for semi-arid regions of Australia using stable isotopes and elemental abundancesen_AU
dc.typeJournal Articleen_AU
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