Charles Darwin University

CDU eSpace
Institutional Repository

 
CDU Staff and Student only
 

Variation in vegetative water use in the savannas of the North Australian Tropical Transect

Cook, GD, Williams, RJ, Hutley, LB, O'Grady, AP and Liedloff, AC (2002). Variation in vegetative water use in the savannas of the North Australian Tropical Transect. Journal of Vegetation Science,13(3):413-418.

Document type: Journal Article
Citation counts:
Google Scholar Search Google Scholar

Title Variation in vegetative water use in the savannas of the North Australian Tropical Transect
Author Cook, GD
Williams, RJ
Hutley, LB
O'Grady, AP
Liedloff, AC
Journal Name Journal of Vegetation Science
Publication Date 2002
Volume Number 13
Issue Number 3
ISSN 1100-9233   (check CDU catalogue open catalogue search in new window)
Start Page 413
End Page 418
Total Pages 6
Place of Publication Uppsala, Sweden
Publisher Opulus Press
Field of Research 0607 - Plant Biology
HERDC Category C1 - Journal Article (DEST)
Abstract The decline in tree density on sandy soils in savannas is highly correlated with declining mean annual rainfall along the North Australian Tropical Transect (NATT). We re-analyse various data on water use by individual trees and argue that a common relationship can be used to estimate annual water use by tree stands along the NATT from ca. 600 mm mean annual rainfall to at least 1600 mm. Where rainfall is less than 600 mm, trees of a given size use less water than at sites where rainfall is higher. We use these relationships to relate water use at the stand scale with mean annual rainfall along the NATT. From this we show that the empirical data imply that the minimum depth of sandy soil that needs to be exploited by trees declines with increasing aridity along the NATT from more than 5 m to less than 1 m. This finding is consistent with other observations and the pattern that with increasing aridity, an increasing proportion of rainfall coming from isolated storms rather than from periods of extended monsoon activity.
DOI http://dx.doi.org/10.1658/1100-9233(2002)013[0413:VIVWUI]2.0.CO;2   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
Versions
Version Filter Type
Access Statistics: 336 Abstract Views  -  Detailed Statistics
Created: Fri, 12 Sep 2008, 08:35:25 CST by Administrator