SummaryCipo Canastero Asthenes luizae is a relict ovenbird restricted to rocky outcrops at high elevations within the campo rupestre vegetation of the Espinhaço Range in the state of Minas Gerais, south-eastern Brazil. This poorly known species is considered ‘Near Threatened’, but recent studies have suggested that it should be listed under a higher category of threat. To contribute to the knowledge of this species and its conservation assessment and related planning, we compiled all literature records of the species distribution (n = 16 locations), collected new data on its occurrence (n = 72 locations), and calculated its geographic range using four different approaches. First, we defined the sky islands where the species occurs (nine units) using the lowest elevation value recorded (1,100 m asl) as a cut-off. Second, we performed species distribution modelling (SDM) across the sky islands and identified an area of 2,225.21 km2. Third, we measured the species’ extent of occurrence (EOO = 24,555.85 km2) and used SDM to estimate its upper limit (EOOup = 30,697.58 km2). Fourth, we measured the area of occupancy (AOO = 228 km2) and used SDM to estimate its upper limit (AOOup = 1,827.39 km2). We analysed the Cipo Canastero sky islands in terms of landscape metrics including size, isolation, protected area coverage, shape index, core area index, and proportion covered by SDM. We observed a very fragmented distribution, especially in the North sector of the species distribution, composed of small and isolated populations (separated by up to 112 km); the South sector is the core of its distribution and is composed of larger, more connected patches with differences in shape complexity that are not strongly influenced by an edge effect. The range sizes calculated, along with other reported information regarding population and habitat trends, justifies the inclusion of the species in at least the ‘Vulnerable’ category.

中文翻译：

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Cipo Canastero Asthenes luizae 的地理范围和保护，巴西天空岛屿的地方性 furnariid

摘要Cipo Canastero路易莎是一种孑遗的烤箱鸟，仅限于高海拔地区的岩石露头坎波鲁佩斯特巴西东南部米纳斯吉拉斯州埃斯皮尼亚索山脉的植被。这种鲜为人知的物种被认为是“近危”，但最近的研究表明，它应该被列为更高的威胁类别。为了有助于了解该物种及其保护评估和相关规划，我们汇编了该物种分布的所有文献记录（n= 16 个地点），收集了有关其发生的新数据（n= 72 个位置），并使用四种不同的方法计算其地理范围。首先，我们使用记录的最低海拔值（1,100 m asl）作为截止值来定义物种出现的天空岛（九个单位）。其次，我们对天空岛进行了物种分布建模（SDM），确定了2,225.21平方公里的区域2. 第三，我们测量了物种的发生范围（EOO = 24,555.85 km2) 并使用 SDM 估计其上限 (EOOup = 30,697.58 km2）。四、我们测量了占用面积（AOO = 228 km2) 并使用 SDM 估计其上限 (AOOup = 1,827.39 km2）。我们根据景观指标分析了 Cipo Canastero 天空岛屿，包括大小、隔离度、保护区覆盖率、形状指数、核心区域指数和 SDM 覆盖的比例。我们观察到分布非常分散，特别是在物种分布的北部，由小而孤立的种群组成（相隔达 112 公里）；南区是其分布的核心，由更大、更连接的斑块组成，其形状复杂性不同，不受边缘效应的强烈影响。计算出的范围大小，以及其他有关人口和栖息地趋势的报告信息，证明将该物种至少列入“弱势”类别是合理的。