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Intra-specific variation in leaf attributes of four savanna tree species across a rainfall gradient in tropical Australia

Citation

Prior, LD and Bowman, DMJS and Eamus, D, Intra-specific variation in leaf attributes of four savanna tree species across a rainfall gradient in tropical Australia, Australian Journal of Botany, 53, (4) pp. 323-335. ISSN 0067-1924 (2005) [Refereed Article]


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Copyright Statement

Copyright 2005 CSIRO

DOI: doi:10.1071/BT04080

Abstract

Leaf attributes of four savanna tree species were measured along a rainfall gradient (1650-950 mm per annum) in the Australian monsoon tropics. As the mean annual rainfall decreased, leaf thickness increased for three of these four species. However, a corresponding decrease in leaf density for two species meant that leaf mass per area increased significantly only for one species. Physiological measurements were made during both the wet and dry seasons on comparable stands of vegetation near the extremes and middle of this gradient. Assimilation per unit mass was similar at all three sites but assimilation per leaf area was higher at the drier sites because leaves were thicker with higher mass per area. These results probably reflect reduced tree density and leaf area index at the drier sites, which offsets the lower rainfall, potentially allowing similar rates of assimilation per unit carbohydrate invested in leaves. © CSIRO 2005.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Other Biological Sciences
Research Field:Global Change Biology
Objective Division:Environment
Objective Group:Climate and Climate Change
Objective Field:Social Impacts of Climate Change and Variability
Author:Prior, LD (Dr Lynda Prior)
Author:Bowman, DMJS (Professor David Bowman)
ID Code:46487
Year Published:2005
Web of Science® Times Cited:22
Deposited By:Plant Science
Deposited On:2007-09-19
Last Modified:2011-10-19
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