A comparison of tree water use in two contiguous vegetation communities of the seasonally dry tropics of northern Australia: the importance of site water budget to tree hydraulics

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dc.contributor.author Kelley, Georgina en_US
dc.contributor.author O'Grady, Anthony en_US
dc.contributor.author Hutley, Lindsay en_US
dc.contributor.author Eamus, Derek en_US
dc.contributor.editor en_US
dc.date.accessioned 2010-05-28T09:45:12Z
dc.date.available 2010-05-28T09:45:12Z
dc.date.issued 2007 en_US
dc.identifier 2009004547 en_US
dc.identifier.citation Kelley Georgina et al. 2007, 'A comparison of tree water use in two contiguous vegetation communities of the seasonally dry tropics of northern Australia: the importance of site water budget to tree hydraulics', CSIRO, vol. 55, no. 7, pp. 700-708. en_US
dc.identifier.issn 0067-1924 en_US
dc.identifier.other C1UNSUBMIT en_US
dc.identifier.uri http://hdl.handle.net/10453/8745
dc.description.abstract Tree water use in two contiguous communities (eucalypt open-forest and Melaleuca paperbark forest) was measured in tropical Australia, over a 2-year period. The aims of the study were to (1) quantify daily and seasonal patterns of water use in each community, (2) compare patterns of water use among the communities and (3) compare relationships among tree size, sapwood area and water use within the two contrasting vegetation communities. Access to deep soil water stores and the effect of run-on from the eucalypt forest resulted in a relatively high pre-dawn water potential throughout the year, particularly for Melaleuca forest. There were no differences in daily rates of water use, expressed on a sapwood area (Q s) basis, between the two eucalypt species examined (Eucalyptus miniata Cunn. Ex Schauer and E. tetrodonta F.Muell) at any time in the eucalypt forest. For both the eucalypt and Melaleuca forests, there was less seasonal variation in water use expressed on a leaf area (Q l) basis than on a Q s basis, and neither year nor season were significant factors in Q l. In the mono-specific Melaleuca forest, Q s was not significantly different between years or seasons. Water use on a Q l basis was similarly not significantly different between years or seasons in the Melaleuca forest. Leaf area index (LAI) of the eucalypt forest was about half of that of the Melaleuca forest throughout the year but sapwood area per hectare was 33% larger in the eucalypt than the Melaleuca forest, despite the basal area of the Melaeuca forest being almost double that of the eucalypt forest. en_US
dc.language en_US
dc.publisher CSIRO en_US
dc.relation.isbasedon http://dx.doi.org/10.1071/BT07021 en_US
dc.title A comparison of tree water use in two contiguous vegetation communities of the seasonally dry tropics of northern Australia: the importance of site water budget to tree hydraulics en_US
dc.parent Australian Journal Of Botany en_US
dc.journal.volume 55 en_US
dc.journal.number 7 en_US
dc.publocation Melbourne, Australia en_US
dc.identifier.startpage 700 en_US
dc.identifier.endpage 708 en_US
dc.cauo.name SCI.Faculty of Science en_US
dc.conference Verified OK en_US
dc.for 060700 en_US
dc.personcode 0000061585 en_US
dc.personcode 0000024179 en_US
dc.personcode 0000018330 en_US
dc.percentage 100 en_US
dc.classification.name Plant Biology en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Site water balance, tree hydraulics, ecohydrology en_US
dc.staffid 000006 en_US


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