Restoring a Jarrah Forest Understorey Vegetation after Bauxite Mining in Western Australia

摘要: The Southwest of Western Australia is one the world’s biodiversity hotspots. In jarrah forest there are at least 300–400 plant species in vegetation that typically mined and as many 163 per 0.1 ha. Hence, restoring to post-mining areas seen a priority. Approximately 70% understorey richness returned via direct transfer fresh topsoil. Additions provenance-correct seeds between 78 113 native add significantly richness. Many broadcast receive prebroadcast heat or smoke treatment increase germinability. 20 additional produced by vegetative multiplication tissue culture planted into restored areas. Though sequential improvements during past 30 years, Alcoa now achieves its target establish same number 80 m2 natural forest. Resampling permanent plots revealed composition older does not become more similar unmined over three decades. Few (mostly orchids) after first year restoration adherence initial floristic model succession applies mine site Australia. Alcoa’s strategy, therefore, maximize diversity newly sites attempt. Future research will investigate methods further density fire resprouter species, group currently under-represented bauxite mining sites.