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

Australian Journal of Botany

Volume 70 Number 7 2022

BT22009Frameworks for identifying priority plants and ecosystems most impacted by major fires

Tony D. Auld 0000-0002-8766-2829, David A. Keith 0000-0002-7627-4150, Rachael V. Gallagher 0000-0002-4680-8115, Mark Tozer, Mark K. J. Ooi 0000-0002-3046-0417, Tom Le Breton, Stuart Allen, Colin Yates 0000-0003-2286-8700, Stephen van Leeuwen 0000-0003-3063-7785, Richard J. Williams and Berin D. E. Mackenzie 0000-0001-6898-9925
pp. 455-493
Graphical Abstract Image

The occurrence of large-scale fires is increasing globally. Adverse impacts of these fires on plants and ecosystems can be significant without rapid management responses. We developed novel predictive frameworks to identify the species and vegetation types in most urgent need of post-fire intervention to promote successful recovery after such megafires. The frameworks described here are applicable to major fire events in a diverse range of biomes across the world.

BT21056Post-fire resprouting ability in young plants of Astronium fraxinifolium

Marilaine Cristina Marques Leite, Alice Souza Leal, Maycon Anderson Araujo and Aline Redondo Martins 0000-0002-2931-4981
pp. 494-498
Graphical Abstract Image

Among several characteristics, fire is a natural factor in the Brazilian Cerrado; so, the plant species occurring in this biome have several adaptations because of this characteristic. We studied Astronium fraxinifolium, a tree native to this biome, in its juvenile phase, that sprouts quickly after the fire. The information obtained in this study shows that A. fraxinifolium is a regrowth plant in post-fire events, and can be used in the restoration and reforestation of Cerrado areas.

BT21137Soil nutritional status in KwaZulu-Natal drives symbiotic interactions and plant performance in Lessertia frutescens

N. G. Ngcobo, A. O. Aremu, M. A. Pérez-Fernández and A. Magadlela 0000-0002-1381-2054
pp. 499-508
Graphical Abstract Image

Cancer bush is a multipurpose medicinal legume endemic to southern Africa, reported to grow in a variety of soils, from very poor to fertile ones. There is limited knowledge on how cancer bush is able to adapt in diverse soils and, particularly, nothing has been reported on the benefits from the microbe symbiosis, plant growth and acclimation to low-nutrient soils. Cancer bush has developed adaptations to maximise P and N assimilation under limited soil P availability by establishing symbiosis with phospho-bacteria and N2-fixing bacteria and switching N sources between soil N and atmospheric N to reserve energy to optimise plant growth in impoverished soils.

Committee on Publication Ethics

Best Student Paper

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

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