Land-use change is well documented to cause species loss. However, our understanding of the effects of land-use change on other aspects of biodiversity is still limited. We evaluated if different land-use changes (Eucalyptus plantation and planted pasture) affect ant species and functional groups in similar ways across three Cerrado vegetation types (grassland, savanna and savanna-forest). We found that ant species and functional responses differed with land-use change in relation to frequency of occurrence and habitat specificity and fidelity. Land-use change affected species frequency of occurrence but not functional groups, indicating that species are more sensitive than functional groups to habitat transformation. Native habitats had different indicator species and functional groups compared with converted habitats. However, we did not find functional group indicators of converted habitats in any vegetation type; indicating that there is no specificity and fidelity of functional group to converted habitats and that such an approach is less sensitive to land-use changes. In savanna and savanna-forest, species and functional groups showed the same response in relation to composition with differences between native and converted habitats. Thus, functional groups will be lost when ant species are lost. In grasslands, functional group composition was similar between native and converted habitats indicating a turnover of species within functional groups. We demonstrate that both Eucalyptus plantation and planted pasture affect ant species and functional groups in different ways, with negative impacts both taxonomically and less so functionally. Therefore, we show that the two aspects of biodiversity can respond independently to land-use changes and, hence, the importance of using both taxonomic and functional group approaches to evaluate the effects of land-use change on biodiversity in savanna systems.

有据可查的土地利用变化会造成物种流失。但是，我们对土地利用变化对生物多样性其他方面的影响的了解仍然有限。我们评估了不同的土地利用变化（桉树人工林和草场）在三种Cerrado植被类型（草地，热带稀树草原和热带稀树草原森林）中以类似的方式影响蚂蚁物种和功能组。我们发现，蚂蚁的种类和功能响应随土地利用的变化而不同，与发生频率，生境特异性和保真度有关。土地利用变化影响物种发生的频率，但不影响功能组，这表明物种对功能区的转化比功能组更敏感。与转换后的生境相比，原生生境具有不同的指示物种和功能组。但是，我们没有找到任何植被类型下已转化栖息地的功能组指标；表明功能群体对转化后的栖息地没有特异性和忠诚度，并且这种方法对土地利用的变化较不敏感。在热带稀树草原和热带稀树草原中，物种和功能组在组成方面显示出相同的响应，但原生和转化生境之间存在差异。因此，当蚂蚁种类丢失时，官能团也会丢失。在草原上，原生栖息地和转化栖息地之间的功能组组成相似，表明功能组内物种的更新。我们证明了两者 原生栖息地和转化栖息地之间的功能组组成相似，表明功能组内物种的更新。我们证明了两者 原生栖息地和转化栖息地之间的功能组组成相似，表明功能组内物种的更新。我们证明了两者桉树的人工林和种植的牧场以不同的方式影响蚂蚁的物种和功能群，既对分类学产生负面影响，又对功能产生负面影响。因此，我们表明，生物多样性的两个方面可以独立地对土地利用变化做出响应，因此，使用分类学和功能组方法来评估稀树草原系统中土地利用变化对生物多样性的影响的重要性。