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Dynamics of a savanna-forest mosaic in the Australian monsoon tropics inferred from stand structures and historical aerial photography

Banfai, Daniel S. and Bowman, David (2005). Dynamics of a savanna-forest mosaic in the Australian monsoon tropics inferred from stand structures and historical aerial photography. Australian Journal of Botany,53(3):185-194.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 18 times in Scopus Article | Citations

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IRMA ID A00004xPUB89
Title Dynamics of a savanna-forest mosaic in the Australian monsoon tropics inferred from stand structures and historical aerial photography
Author Banfai, Daniel S.
Bowman, David
Journal Name Australian Journal of Botany
Publication Date 2005
Volume Number 53
Issue Number 3
ISSN 0067-1924   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-21244465540
Start Page 185
End Page 194
Total Pages 10
Place of Publication Collingwood
Publisher Commonwealth Scientific and Industrial Research Organization
Field of Research 0607 - Plant Biology
HERDC Category C1 - Journal Article (DEST)
Abstract Stratified ground-truthing was undertaken within an area of approximately 30 km(2) of tropical savanna across an abrupt sandstone escarpment in the monsoon tropics of Australia. Comparison of aerial photographs from 1941 and 1994 had previously revealed a landscape-wide expansion of closed forest and contraction of grassland patches. Good congruence between field measurements and the vegetation classifications from the 1994 aerial photography supported the authenticity of the vegetation changes. The relative abundance of rainforest and non-rainforest tree species also concurred with mapped vegetation transitions. Changes in individual size classes of rainforest species, which are relatively. re sensitive, were consistent with the primacy of. re in controlling the distribution of the closed-forest formation. Fire scars previously mapped from satellite imagery were used to derive a. re activity index for contrasting vegetation transitions. Savannas that had converted to closed forest had lower. re activity than did stable savannas. Conversely, closed forests that converted to savanna had the highest. re activity index. The landscape-wide expansion of rainforest is associated with the cessation of Aboriginal. re management, possibly in conjunction with elevated CO2 and increasing annual rainfall.
DOI http://dx.doi.org/10.1071/BT04141   (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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