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International Journal of Wildland Fire International Journal of Wildland Fire Society
Journal of the International Association of Wildland Fire
RESEARCH ARTICLE

Delivering effective savanna fire management for defined biodiversity conservation outcomes: an Arnhem Land case study

Jay Evans A B C and Jeremy Russell-Smith A B
+ Author Affiliations
- Author Affiliations

A Darwin Centre for Bushfire Research, Research Institute for Environment and Livelihoods, Charles Darwin University, Darwin, NT 0909, Australia.

B Bushfire and Natural Hazards Cooperative Research Centre, East Melbourne, Vic 3002, Australia.

C Corresponding author. Email: jay.evans@cdu.edu.au

International Journal of Wildland Fire 29(5) 386-400 https://doi.org/10.1071/WF18126
Submitted: 5 August 2018  Accepted: 15 January 2019   Published: 26 February 2019

Abstract

Given the recent history of frequent and extensive late dry season wildfire in Australia’s fire-prone northern savannas, regional conservation-based fire management programs typically aim to mitigate wildfire through the use of strategic prescribed burning during the cooler early dry season. However, it remains unclear as to the extent such environmental management concerns are being addressed by these renewed fire management efforts. This study documents changes in fire regime in the western Arnhem Land region of northern Australia associated with the implementation of active fire management since 2006. Over a 12-year period, the regional fire regime has transitioned from late dry season, wildfire-dominated to being characterised by a majority of fires occurring as small early dry season prescribed burns. Although overall area burnt has not significantly decreased, most ecological threshold metrics have improved, with the exception of those describing the maintenance of longer-unburnt habitat. Challenges involved with defining, delivering, monitoring and evaluating heterogeneity targets are discussed.

Additional keywords: ecological thresholds, fire regimes, prescribed burning.


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