Fire weather risk differs across rain forest—savanna boundaries in the humid tropics of north‐eastern Australia

A study of the Wet Tropics of Queensland reveals that fire weather risk varies significantly across rain forest, tall eucalypt forest, and savanna boundaries, with savannas exhibiting the highest flammability. Despite their proximity to highly flammable savannas, rain forests rarely experience conditions conducive to fire, highlighting a strong vegetation-type influence on microclimate and fire risk. The research, spanning eight transects over three years, used McArthur's Forest Fire Danger Index (FFDI) to measure fire risk across an elevational gradient, demonstrating that elevation has a minimal impact compared to vegetation type. This finding supports the alternative stable state theory, emphasizing the feedback loop between fire activity and vegetation composition in tropical ecosystems.

LITTLE, J. K., PRIOR, L. D., WILLIAMSON, G. J., WILLIAMS, S. E., & BOWMAN, D. M. J. S. (2012). Fire weather risk differs across rain forest—savanna boundaries in the humid tropics of north‐eastern Australia. Austral Ecology, 37(8), 915–925. Portico. https://doi.org/10.1111/j.1442-9993.2011.02350.x