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Recruitment dynamics of the long-lived obligate seeders Callitris intratropica (Cupressaceae) and Petraeomyrtus punicea (Myrtaceae)

Russell-Smith, Jeremy (2006). Recruitment dynamics of the long-lived obligate seeders Callitris intratropica (Cupressaceae) and Petraeomyrtus punicea (Myrtaceae). Australian Journal of Botany,54(5):479-485.

Document type: Journal Article
Citation counts: Scopus Citation Count Cited 19 times in Scopus Article | Citations

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IRMA ID A00012xPUB32
Title Recruitment dynamics of the long-lived obligate seeders Callitris intratropica (Cupressaceae) and Petraeomyrtus punicea (Myrtaceae)
Author Russell-Smith, Jeremy
Journal Name Australian Journal of Botany
Publication Date 2006
Volume Number 54
Issue Number 5
ISSN 0067-1924   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-33746928011
Start Page 479
End Page 485
Total Pages 7
Place of Publication Collingwood
Publisher CSIRO Publishing
HERDC Category C1 - Journal Article (DEST)
Abstract The fire-prone sandstone Arnhem Plateau is recognised as an international centre of plant species diversity. Key regional long-lived obligate seeders include the coniferous tree Callitris intratropica R. T. Baker & H. G. Smith, and the endemic myrtaceous, serotinous shrub Petraeomyrtus punicea (Byrnes) Craven. The paper reports a 6 year study of seedling-recruitment dynamics in natural stands of both species. For C. intratropica, it was found that (1) contrary to other published observations, initial growth was slow, with juveniles taking similar to 10 years to attain 2-m height, (2) maturation substantially exceeds 10 years and (3) previously unreported, even juveniles may occasionally resprout following very low-intensity. res after 100% scorch. For P. punicea, (1) maturation in some individuals commences as early as 4 years but generally takes at least 1-2 years longer and (2) juveniles (as well as adults) are killed following 100% scorch. The results emphasise the need for management-imposed fire regimes dominated by patchy, low-intensity fires for conservation of regional long-lived obligate seeders.
Keywords monsoonal northern australia
fire regimes
sandstone heath
patchiness
vegetation
management
baker,r.t.
frequency
DOI http://dx.doi.org/10.1071/BT05133   (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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Created: Wed, 28 Nov 2007, 14:16:08 CST