The influence of a variable fire regime on woodland structure and composition
Emma E. Burgess A C , Patrick Moss A , Murray Haseler B and Martine Maron A
+ Author Affiliations
- Author Affiliations
A The University of Queensland, School of Geography, Planning and Environmental Management, Brisbane, Qld 4072, Australia.
B Bush Heritage Australia, Level 5, 395 Collins Street, Melbourne, Vic. 3000, Australia.
C Corresponding author. Email: e.burgess4@uq.edu.au
International Journal of Wildland Fire 24(1) 59-69 https://doi.org/10.1071/WF14052
Submitted: 6 December 2013 Accepted: 3 August 2014 Published: 13 November 2014
Abstract
The post-fire response of vegetation reflects not only a single fire event but is the result of cumulative effects of previous fires in the landscape. For effective ecological fire management there is a need to better understand the relationship between different fire regimes and vegetation structure. The study investigated how different fire regimes affect stand structure and composition in subtropical eucalypt woodlands of central Queensland. We found that fire history category (i.e. specific combinations of time since fire, fire frequency and season of last burn) strongly influenced richness and abundance of species categorised as mid-storey trees and those individuals currently in the mid-level strata. Time since fire and fire frequency appeared to have the strongest influence. A longer time since fire (>4 years since last burn), combined with infrequent fires (<2 fires in 12 year period) appeared to promote a dense mid-storey with the opposite conditions (<4 years since last burn; >2 fires in 12 year period) promoting more-open woodlands. Consideration of these combined fire regime attributes will allow fire managers to plan for a particular range of fire-mediated patches to maintain the desired diversity of vegetation structures.
Additional keywords: fire management, fire regimes, floristic composition, habitat structure, subtropical woodlands.
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