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Late 20th century landscape-wide expansion of Allosyncarpia ternata (Myrtaceae) forests in Kakadu National Park, northern Australia

Bowman, David and Dingle, Joanne Kay (2006). Late 20th century landscape-wide expansion of Allosyncarpia ternata (Myrtaceae) forests in Kakadu National Park, northern Australia. Australian Journal of Botany,54(8):707-715.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 9 times in Scopus Article | Citations

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IRMA ID A00004xPUB76
Title Late 20th century landscape-wide expansion of Allosyncarpia ternata (Myrtaceae) forests in Kakadu National Park, northern Australia
Author Bowman, David
Dingle, Joanne Kay
Journal Name Australian Journal of Botany
Publication Date 2006
Volume Number 54
Issue Number 8
ISSN 0067-1924   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-33845313332
Start Page 707
End Page 715
Total Pages 9
Place of Publication Collingwood
Publisher CSIRO Publishing
Field of Research 0607 - Plant Biology
HERDC Category C1 - Journal Article (DEST)
Abstract Allosyncarpia ternata S.T. Blake is a large tree endemic to the rugged western edge of the Arnhem Land Plateau, northern Australia, with most of the species conserved in Kakadu National Park (KNP). A. ternata stems suffer substantial mortality following wild. re but the species resprouts prolifically from root stocks. Nonetheless, there is concern about the persistence of A. ternata rainforest patches following breakdown of traditional Aboriginal landscape burning that generated a mosaic of burnt and unburnt areas. Generalised linear modelling was used to identify the landscape features associated with the fragmentary distribution of A. ternata rainforest. We randomly sampled 12 areas that together made up 12.6% of the total coverage of A. ternata in KNP (12 191 ha) that spanned the geographic range of this vegetation type within the Park. The modelling of these data showed that A. ternata forests were most likely to occur at sites with. re protection, as inferred from the small number of. re scars apparent on sequences of satellite imagery, steep slope angles and proximity to drainage lines. Analysis of historical aerial photography revealed that, despite considerable negative and positive variation, there has been a 21% expansion of A. ternata forests over the last 50 years. Expansion occurred by incremental growth from existing forest boundaries and not by nucleation, reflecting the poor seed dispersal of the tree. The forest expansion was negatively correlated with. re activity. A regionally wetter climate since the mid-20th century may be an important cause of the expansion despite currently unfavourable. re regimes.
DOI http://dx.doi.org/10.1071/BT05202   (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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