Tropical Savannas CRC
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Resources

Gamba Grass Evidence
This article explains the environmental impact of Gamba grass based on 10 years' research [pdf 494.2 kb]


This interactive Gouldian finch case study (from Savanna Walkabout) outlines the threat of wildfire on their habitat.

Savanna Lookout

Savanna Lookout

 



Key questions and understandings

  • When to burn, why does it matter?
  • What adaptations do some plants have to fire?
  • How do plants and animals respond in different ways to fire?
  • How does research and technology help us to understand the impact of fire and manage it for conservation?

Plants have adaptations (survival strategies) to resist and respond to fire. Some plants depend on fire in their environment to reproduce. Some animals take advantage of fire to provide prey. 

Different fire regimes (i.e. size, frequency, intensity and patchiness) effect plants and animals in different ways depending on the species. Patch burning / mosaic approach helps maintain diversity in a landscape or ecosystems. Introduced plant species such as Gamba grass effect ecosystems through changed fire regimes.

Scientific models like the Flames Model, enable us to understand how the timing and frequency of fire influences ecosystems in the long-term.

Simulation models integrate all the current scientific understanding and simulate management scenarios in a way that wouldn't be possible with field trials or using historic data. 

It is recommended that students have a basic understanding of the potential impacts of invasive grasses before exploring the Flames model simulation by "meeting" Dr Samantha Setterfield (in Savanna Walkabout module).

Students could: 

  • identify and compare features and attributes between fire tolerant and fire-sensitive plant species;
  • identify the impact of fire on animal species (e.g. partridge pigeon, frill-neck lizard, Leichhardt's grasshopper)
  • use the Flames Model to observe, predict and explain what happens with different burning frequencies on specific plant species - e.g. woollybutt, stringbark and Gamba grass;
  • explain why fire can be a destructive force or a useful tool.