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dc.contributor.author Olbrich, BW en_US
dc.contributor.author Le Roux, D en_US
dc.contributor.author Poulter, AG en_US
dc.contributor.author Bond, WJ en_US
dc.contributor.author Stock, WD en_US
dc.date.accessioned 2007-02-06T13:01:13Z en_US
dc.date.accessioned 2007-06-07T10:08:45Z
dc.date.available 2007-02-06T13:01:13Z en_US
dc.date.available 2007-06-07T10:08:45Z
dc.date.copyright en_US
dc.date.issued 1993-10-01 en_US
dc.identifier.citation Olbrich, BW, et al. 1993. Variation in water-use efficiency and delta-C-13 levels in eucalyptus-grandis clones. Journal of Hydrology, vol. 150, 04 February, pp 615-633 en_US
dc.identifier.issn 0022-1694 en_US
dc.identifier.uri http://hdl.handle.net/10204/1539 en_US
dc.identifier.uri http://hdl.handle.net/10204/1539
dc.description.abstract This study aimed to determine whether the delta-C-13 levels in the foliage and twigs of four Eucalyptus grandis clones were related to their water use efficiency (WUE). This relationship has previously been demonstrated in a number of herbaceous species but not in mature trees. The study involved accurate measurements of tree trunk growth and water use over a period of 4 months, with subsequent isotopic analysis of mature foliage from the north and south side of the canopy, and young leaves from the top of the canopy. The water use efficiencies were found to vary from 5.97 X 10(-3) to 12.3 x 10(-3) m3 m-3. Significant differences were observed between clonal-mean water use efficiencies averaged over six sampling periods. The average delta-C-13 of the mature and young foliage was found to be significantly correlated with WUE. However, the correlation was weak, suggesting that the relationship between delta-C-13 and WUE is more complex in trees than suggested in the literature on crop plants. It is suggested that differences between sample trees in carbon allocation and leaf-to-air vapour pressure deficits may account for the poor correlation between delta-C-13 and WUE in the four E. grandis clones studied. en_US
dc.format.extent 964671 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en en_US
dc.publisher Elsevier Science BV en_US
dc.rights Copyright: 1993 Elsevier Science BV en_US
dc.source en_US
dc.subject Eucalyptus grandis clones en_US
dc.subject Delta-C-13 levels en_US
dc.subject Water use efficiency en_US
dc.subject WUE en_US
dc.subject Civil engineering en_US
dc.subject Water resources en_US
dc.title Variation in water-use efficiency and delta-C-13 levels in eucalyptus-grandis clones en_US
dc.type Article en_US


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