To "summarize the early post- fire changes in vegetation and ground cover conditions that have occurred in grassland and heathland on Holmes and Wellington Plains" (pp. 671).
Type of Study:
Fire caused a substantial decrease in vegetation cover (to ca. 15%) and an increase in the amount of bare ground (to 70-85%). Post-fire regeneration was relatively rapid. The tussock-forming snow grasses resprouted vigorously following fire, and had flowered prolifically after 1 year. After 2.5 years overall vegetation cover in grassland had increased to ca. 65%, but dense vegetation cover was only ca. 25-35% and bare ground had decreased to ca. 30%. In burnt heathland after 2.5 years, dense vegetation cover was generally <20% and bare ground >50%.
Sites had varying fire history (burnt in 1998 and unburnt), vegetation type (heathland and grassland) and locality (Holmes Plains and Wellington Plains).
Frequentist (P values): ANOVA (one-way, two-way and repeated measures).
Documentation of early patterns of regneration in high subalpine grasslands and heathlands.
Imogen Fraser; Dick Williams
Holmes Plains and Wellington Plains, Australian Alpine National Park, Victoria, Australia
Response variable :
Species composition and cover, above-ground biomass (burnt and unburnt grasslands only), gap size and type, grass tussock basal area and prefire shrub cover.
50 points per 10m transect for species composition and cover; 10 quadrats (0.25 m2) for biomass. Note: area of inter-tussock gaps and tussocks measured along 10 m transect.
Alpine heathland and grassland
100 transects across Holmes and Wellington Plains, over approximately 92 ha, and 4 additional transects established at Wellington Plains.
Wahren C.H.A., Papst W.A., Williams R.J. (2001) Early post-fire regeneration in subalpine heathland and grassland in the Victorian Alpine National Park, south-eastern Australia. Austral Ecology 26, 670–679.