The Eremaean region, Australia’s arid biome and biogeographic region, has been discussed by botanists (and as the Eyrean, its counterpart for zoogeographers) for over 150 years, yet little progress was made in defining it as an area of endemism until the 2000s. As Australia’s largest biome and biogeographic region, the Eremaean has been defined in a climate sense, but is a historically composite biogeographic area. Taxa that inhabit the Eremaean (Eyrean) tend to display sister relationships to those outside the biome in temperate and monsoonal biome areas, indicating that two or more temporally discordant distributional patterns exist in the Australian flora and fauna. The future of Eremean and Eyrean bioregionalisation will need to incorporate these temporal patterns when constructing new bioregionalisations and historical and climate-based biogeographic models.

中文翻译：

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划分澳大利亚的干旱区：Eremaean 和 Eyrean 生物地理区域的生物区域化回顾

Eremaean 地区是澳大利亚的干旱生物群落和生物地理区域，150 多年来一直被植物学家（以及作为动物地理学家的对应物 Eyrean）讨论，但直到 2000 年代才将其定义为特有地区。作为澳大利亚最大的生物群落和生物地理区域，Eremaean 是从气候意义上定义的，但在历史上是一个复合生物地理区域。居住在 Eremaean (Eyrean) 的分类群往往与温带和季风生物群落区域的生物群落以外的群落表现出姐妹关系，表明澳大利亚动植物群中存在两种或更多时间上不一致的分布模式。