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Australian Journal of Botany Australian Journal of Botany Society
Southern hemisphere botanical ecosystems
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Australian Journal of Botany

Australian Journal of Botany

Volume 72 Number 3 2024

BT23081Mitigation of disease and browsing impacts, and translocation, supports post-fire threatened flora recovery

Sarah Barrett, Colin J. Yates, Rebecca Dillon 0000-0001-6092-0835, Megan Dilly, Ben Varcoe, Darcy Martin, Bayley Castlehow and Carl R. Gosper 0000-0002-0962-5117

Photographs of vegetation without (more plant mortality) and with (less mortality) recurrent phosphite spraying.

Mitigation of the impacts of Phytophthora dieback and browsing by mammalian herbivores improved post-fire survival and/or growth of threatened flora in the Stirling Range (Koi Kyeunu-ruff), Western Australia. Translocated populations had greater growth and earlier flowering than wild populations. Mitigating non-fire regime threats supported post-fire recovery of threatened flora. Photographs by S. Barrett (Department of Biodiversity, Conservation and Attractions).


Alpine heath vegetation on kunanyi, Tasmania.

We compared vegetation in alpine heath plots that regenerated after fires of 1947 and 1962. Herbs and graminoids plummeted in cover and species richness between 1998 and 2022, whereas shrubs continued to increase in cover in the 1962-burnt, but decreased in the 1947-burnt area. Shrubs exhibited compositional change up to 75 years after fire. A failure of the shrub layer to be more similar between the fire years might be due to stronger winds and higher temperatures. A predicted climate change-induced increase in diversity did not occur. Image by Jamie Kirkpatrick.


Two photographs of a herbivore exclosure, showing vegetation recovery between 1996 and 2021.

Long-term monitoring on Tasmania’s Eastern Central Plateau provides an opportunity to document the process of recovery from fire and stock grazing and the impacts of wild herbivores. After 30 years, vegetated ground cover has increased both inside and outside grazing exclosures. Although results between the four sites were variable, natural regeneration will occur without management intervention and in the absence of a catastrophic disturbance such as wildfire. Photographs by Kerry Bridle.

Committee on Publication Ethics

Best Student Paper

The Best Student Paper published in 2023 has been awarded to Jenna Draper.

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