Post-fire survival within a year of germination by three perennial herbs and a eucalypt of north Queensland.

Williams, PR (2004) Post-fire survival within a year of germination by three perennial herbs and a eucalypt of north Queensland. The Queensland Naturalist, 42. p. 11.

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Abstract

Seedlings of the native twining forbs Galactia tenuiflora and Pycnospora lutescens, the grass Heteropogon triticeus and the tree Corymbia clarksoniana, were assessed for their ability to survive a low intensity fire within a year of germination. Of the seedlings that were alive one week prior to a May 1999 fire, 72% of G. tenuiflora, 71% of P. lutescens,48% of H. triticeus and 7% of C. clarksoniana resprouted. This represented 46%, 54%, 19% and 2%, respectively, of the total number of seedlings that germinated between September 1998 and May 1999, including the proportion that had died in the months prior to the May 1999 fire. The resprouting capacity of these species enables some level of population resilience to fires that occur in the first year following germination. However, it is likely that repeated annual fire regimes will reduce the regenerative success of these native plants. Germination events of C. clarksoniana are rare and therefore it is important that fire-free intervals of more than a year follow the germination of this tree, if new individuals are to be recruited into the community.

Item ID: 497
Item Type: Article (UNSPECIFIED)
Keywords: Fire, Survivorship, Corymbia maritima, Giant speargrass
ISSN: 0079-8843
Date Deposited: 28 Sep 2006
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060208 Terrestrial Ecology @ 0%
06 BIOLOGICAL SCIENCES @ 0%
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