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Bamboo, fire and flood: consequences of disturbance for the vegetative growth of a clumping, clonal plant

Franklin, Donald C., Prior, Lynda D., Hogarth, Nicholas J. and McMahon, Clive R. (2010). Bamboo, fire and flood: consequences of disturbance for the vegetative growth of a clumping, clonal plant. Plant Ecology,208(2):319-332.

Document type: Journal Article

IRMA ID 81704288xPUB94
Title Bamboo, fire and flood: consequences of disturbance for the vegetative growth of a clumping, clonal plant
Author Franklin, Donald C.
Prior, Lynda D.
Hogarth, Nicholas J.
McMahon, Clive R.
Journal Name Plant Ecology
Publication Date 2010
Volume Number 208
Issue Number 2
ISSN 1385-0237   (check CDU catalogue open catalogue search in new window)
Scopus ID 2-s2.0-77951975537
Start Page 319
End Page 332
Total Pages 14
Place of Publication Dordrecht
Publisher Springer Netherlands
HERDC Category C1 - Journal Article (DIISR)
Abstract The clumping growth form of tropical bamboos suggests a consolidator strategy in the face of intense competition rather than an ability to exploit disturbance. We investigated the annual growth and culm demographic responses to disturbance by fire and flood of vegetatively mature clumps of a riparian stand of Bambusa arnhemica. Linear-mixed models were employed to control for the non-independence of culm fates within clumps and clump growth among years. As the stand was monodominant and the species is gregariously monocarpic, responses can be interpreted independently of interspecific competition and trade-offs with sexual reproduction. Disturbance depressed clump growth but the culm demographic responses to fire and flood were quite different. Few culms were destroyed during the fire but damage depressed their subsequent survival, leading to declines in clump basal area. Fire also triggered the release of ramet buds, but the additional recruits were small and short-lived. Prolonged and early flooding in one of the study years depressed culm recruitment in clumps low on the lagoon bank but there was possible compensatory recruitment in the following year. There was no convincing evidence that sparse clumps recruited culms better than dense clumps, though culm recruitment was negatively correlated with culm survival. Fire and prolonged flooding are inevitable elements of the environment occupied by B. arnhemica, but we interpret the species' response as persisting in the face of disturbance rather than exploiting the opportunities created by it.
Keywords generalised linear mixed models
genets
intraclonal competition
northern Australia
ramet demography
size-dependent survival
DOI http://dx.doi.org/10.1007/s11258-009-9709-x   (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: Fri, 29 Aug 2014, 17:35:14 CST by Anthony Hornby