Shift in stable water isotopes in precipitation in the Andean Amazon: Implications of deforestation or greenhouse impacts?

Simple item page
dc.contributor.authorHenderson-Sellers, Aen_AU
dc.contributor.authorMcGuffie, Ken_AU
dc.date.accessioned2021-06-18T01:25:49Zen_AU
dc.date.available2021-06-18T01:25:49Zen_AU
dc.date.issued2006en_AU
dc.date.statistics2021-03-18en_AU
dc.descriptionPhysical item available at ANSTO call number DDC- 363.7394/19en_AU
dc.description.abstractChanges in the O and H isotopes in precipitation have been linked to greenhouse warming, but no signal attributable to Amazonian deforestation has been reported. Recent data from the Andes exhibit a seasonally contrasting signal which is consistent with large-area removal of forest. Specifically, at Izobamba, in the far west of the basin, the seasonality in isotopic depletions has become enhanced between 1972 and 2000. The observed more negative isotopic ratios in the wet season are consistent with increases in runoff fraction and/or reductions in recycling through non-fractionating processes. The dry season result (statistically significant less negative isotopic ratios) is harder to explain and could be due to a decrease in fractionating recycling (i.e. partial evaporation from water bodies). Application of a simple isotopic catchment model suggests that these isotopic changes in precipitation may be the result of large-scale deforestation in the Amazon Basin. Isotopically-enabled numerical models are needed to establish regional validity. © 2006 Elsevier B.V.en_AU
dc.identifier.booktitleRadioactivity in the Environmenten_AU
dc.identifier.citationHenderson-Sellers, A., & McGuggie, K. (2006). Shift in stable water isotopes in precipitation in the Andean Amazon: Implications of deforestation or greenhouse impacts? Paper presented to the International Conference on Isotopes in Environmental Studies: Aquatic Forum 2004, 25-29 October, Monaco. In P. P. Povinec & J. A. Sanchez-Cabeza (Eds.), Radioactivity in the Environment, Vol. 8, pp. 39-49. Oxford, UK: Elsevier.en_AU
dc.identifier.conferenceenddate29 October 2004en_AU
dc.identifier.conferencenameIsotopes in Environmental Studies Aquatic Forum 2004en_AU
dc.identifier.conferenceplaceMonacoen_AU
dc.identifier.conferencestartdate25 October 2004en_AU
dc.identifier.issn9780080449098en_AU
dc.identifier.issn1569-4860en_AU
dc.identifier.issue39-49en_AU
dc.identifier.placeofpublicationOxford, UKen_AU
dc.identifier.urihttps://doi.org/10.1016/S1569-4860(05)08003-4en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/10882en_AU
dc.identifier.volume8en_AU
dc.language.isoenen_AU
dc.publisherElsevier Ltden_AU
dc.subjectAmazon Riveren_AU
dc.subjectStable isotopesen_AU
dc.subjectDeforestationen_AU
dc.subjectTranspirationen_AU
dc.subjectEvaporationen_AU
dc.subjectRunoffen_AU
dc.subjectGreenhouse effecten_AU
dc.titleShift in stable water isotopes in precipitation in the Andean Amazon: Implications of deforestation or greenhouse impacts?en_AU
dc.typeConference Paperen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.63 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Conference Publications