Changing climate is predicted to result in increased frequency and size of wildfires in south-eastern Australia. With increasing area burnt there is increased potential for entire species distributions to be burnt in a single fire event. This is particularly the case for range-restricted threatened species. Eucalyptus canobolensis (L.A.S.Johnson & K.D.Hill) J.T.Hunter is restricted to Mount Canobolas, New South Wales, Australia. In 2018, the majority of the E. canobolensis population was burnt by wildfire. One-year post-fire, we measured recruitment, resprouting and mortality of E. canobolensis. At higher fire severities, smaller trees were more likely to resprout from their bases only, as their stems were killed (i.e. ‘top kill’). Seedling regeneration only occurred in burnt plots. Our study demonstrates that E. canobolensis has a fire response typical of many eucalypts, characterised by seedling recruitment and larger trees resprouting epicormically, even after high-severity fire. Nevertheless, E. canobolensis response to repeat and short-interval fire remains unknown, and smaller trees appear to be vulnerable to top kill. Although much of Australia’s flora can respond to fire, this response is likely to be challenged as fire extents increase, especially if this is combined with increasing fire severity and/or frequency. These changes to the fire regime are a particular threat to species with restricted distributions.

预计气候变化将导致澳大利亚东南部野火的发生频率和大小增加。随着燃烧面积的增加，在一次大火中燃烧整个物种分布的可能性就会增加。对于范围受限的受威胁物种尤其如此。Eucalyptus canobolensis（LASJohnson＆KDHill）JTHunter仅限于澳大利亚新南威尔士州的Canobolas山。在2018年，大部分的加拿大油松大肠杆菌被野火烧毁。火灾后一年，我们测量了canobolensis的募集，繁殖和死亡率。在较高的烈度下，较小的树木更有可能仅从其根部萌芽，因为它们的茎被杀死（即“顶杀”）。幼苗再生仅发生在被烧土地上。我们的研究表明，E。canobolensis具有许多桉树典型的火警反应，其特征在于即使在高烈度火警后，幼苗募集和较大的树皮也会表皮生出芽。尽管如此，E。canobolensis对重复和短间隔火灾的反应仍然未知，较小的树木似乎很容易被顶部杀害。尽管澳大利亚大部分的植物区系都能对火灾做出反应，但随着火灾程度的增加，这种反应可能会受到挑战，特别是如果这与火灾严重性和/或频率的增加结合在一起的话。火灾情况的这些变化对分布受限的物种构成了特殊威胁。