Country

Australia: 37 ecoregions. Each with its climate now and toward 2050, and its conservation tier.

Thirty-seven ecoregions reach Australia, and the roster's weighting tells the story: the largest units are all deserts and xeric shrublands (Great Sandy-Tanami, Simpson, Great Victoria) and tropical savannas (Mitchell Grass Downs, Brigalow, Carpentaria, Kimberly), with a mediterranean-climate arc of mallee and woodland ecoregions across the south and southwest, temperate broadleaf forests along the east coast and Tasmania, Queensland tropical rain forests in the wet northeast, and a sliver of montane grassland in the Australian Alps. For gardeners this means almost every planting logic exists somewhere on the continent, but drought tolerance dominates: most of the landmass is arid or seasonally dry, and reliable year-round moisture is confined to the eastern seaboard, Tasmania, and the far southwest. The Eastern Australian and Southeast Australia temperate forests carry a Nature Imperiled rating, so remnant local vegetation there deserves particular care.