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Tree growth rates in north Australian savanna habitats: seasonal patterns and correlations with leaf attributes

Prior, Lynda Dorothy, Eamus, Derek and Bowman, David M. J. S. (2004). Tree growth rates in north Australian savanna habitats: seasonal patterns and correlations with leaf attributes. Australian Journal of Botany,52(3):303-314.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 53 times in Scopus Article | Citations

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Title Tree growth rates in north Australian savanna habitats: seasonal patterns and correlations with leaf attributes
Author Prior, Lynda Dorothy
Eamus, Derek
Bowman, David M. J. S.
Journal Name Australian Journal of Botany
Publication Date 2004
Volume Number 52
Issue Number 3
ISSN 0067-1924   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-3342987572
Start Page 303
End Page 314
Total Pages 12
Place of Publication Collingwood, Victoria, Australia
Publisher CSIRO Publishing
Field of Research 0607 - Plant Biology
HERDC Category C1 - Journal Article (DEST)
Abstract We demonstrate a significant relationship between leaf attributes and growth rates of mature trees under natural conditions in northern Australia, a pattern that has not been widely reported before in the literature. Increase in diameter at breast height (DBH) was measured every 3 months for 2 years for 21 tree species from four habitats near Darwin: Eucalyptus open forest, mixed woodland, Melaleuca swamp and dry monsoon rainforest. Assimilation rates and foliar chlorophyll, nitrogen and phosphorus concentrations were positively correlated with growth rate and negatively correlated with leaf mass per area. For most species, increases in DBH were confined to the wet-season ( summer) period between November and May. Average annual increases in DBH were larger in the dry monsoon rainforest (0.87 cm) and the Melaleuca swamp (0.65 cm) than in the woodland (0.20 cm) and the open forest (0.16 cm), and were larger in non-Myrtaceous species (0.53 cm) than in Myrtaceous species (0.25 cm). These results are discussed in relation to the frequent fire regime prevailing over much of northern Australia which causes the marked contrast between the small pockets of fire-tender closed monsoon rainforest and the surrounding large expanses of fire-tolerant savanna.
Keywords kakadu national-park
dry tropics
stomatal conductance
carbon assimilation
seedling growth
forest
photosynthesis
availability
DOI http://dx.doi.org/10.1071/BT03119   (check subscription with CDU E-Gateway service for CDU Staff and Students  check subscription with CDU E-Gateway in new window)
 
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