Abstract The unique vegetation of rupestrian grassland (Campo Rupestre) is finely tuned to the strong environmental and edaphoclimatic filters that resulted in important adaptations and high levels of endemism. In this study, we intend to give another focus to the understanding of the identity of the rupestrian grasslands by observing their floristic relationships with other surrounding vegetation types and to present for the first time a functional approach and zeta similarity to try to understand the differences and similarities of this ecosystem with other adjacent ones. We have compiled 1790 plant species in 7 vegetation types. Based on the species composition, we can infer that the most similar vegetation types were Tepuis and Altitudinal Grasslands, and this group is closer to Inselbergs. Subsequently, the most similar were Ironstone Grasslands and the Atlantic Forest grouped with Quartzite Grasslands. Finally, Cerrado was the lesser similar. But, these groupings are modified when analyzed at genus or family level. Considering the zeta diversity decline at the species level, the vegetation types showed an almost complete turnover in species assemblage, sharing only a small suite of species between them. This pattern is similar at the genus level, but the number of genera shared across vegetation types is comparatively higher. On the other hand, at the family level, there is a common core of families shared between vegetation types. When we evaluated the similarity considering functional attributes we found differences in composition regarding growth and life forms. However, in this case, Quartzitic and Ironstone Rupestrian Grasslands showed very similar functional attributes. They are inhabited by plant species with shrub, epiphytic, parasitic and succulent forms with rupicolous growth form. In general, the quartzitic grasslands have singular vegetation, but its affinity with other vegetation types does not translate in any way the most relevant aspects associated with endemism and biodiversity. The true landscape identity to a certain ecosystem is given by functional characteristics.

中文翻译：

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作为环境恢复和政策补贴的俄罗斯草原的植物区系和功能特性

摘要 rupestrian 草原 (Campo Rupestre) 的独特植被与强大的环境和土壤气候过滤器进行了微调，导致了重要的适应性和高度的地方性。在这项研究中，我们打算通过观察它们与其他周围植被类型的植物区系关系，将另一个重点放在对 rupestrian 草原身份的理解上，并首次提出一种功能方法和 zeta 相似性，以尝试了解差异和该生态系统与其他相邻生态系统的相似之处。我们编制了 7 种植被类型的 1790 种植物。根据物种组成，我们可以推断出最相似的植被类型是 Tepuis 和 Altitudinal Grasslands，而该组更接近 Inselbergs。随后，最相似的是铁石草原和大西洋森林与石英岩草原。最后，Cerrado 的相似度较低。但是，当在属或科级别进行分析时，这些分组会被修改。考虑到物种水平的zeta多样性下降，植被类型在物种组合中表现出几乎完全的转变，它们之间仅共享一小部分物种。这种模式在属水平上是相似的，但不同植被类型共享的属数量相对较多。另一方面，在家庭层面，植被类型之间有一个共同的家庭核心。当我们考虑功能属性来评估相似性时，我们发现在生长和生命形式方面的组成存在差异。然而，在这种情况下，石英质和铁石质 Rupestrian 草原显示出非常相似的功能属性。它们栖息着具有灌木、附生、寄生和多肉形式的植物物种，具有紫红色的生长形式。一般来说，石英质草原具有单一的植被，但它与其他植被类型的亲和力并没有以任何方式转化与地方性和生物多样性相关的最相关方面。特定生态系统的真正景观特征是由功能特征给出的。但它与其他植被类型的亲和力并没有以任何方式转化与特有性和生物多样性相关的最相关方面。特定生态系统的真正景观特征是由功能特征给出的。但它与其他植被类型的亲和力并没有以任何方式转化与特有性和生物多样性相关的最相关方面。特定生态系统的真正景观特征是由功能特征给出的。