The Brazilian Cerrado is the second largest Neotropical biome and an important hotspot of biodiversity. However, land use change in this ecosystem is producing landscapes with modified natural environments and anthropogenic environments, such as exotic pastures. In this study, we evaluated how conversion of native Cerrado vegetation to exotic pastures affects the dung beetle assemblages (Coleoptera: Scarabaeidae: Scarabaeinae). We sampled dung beetles in four areas of Cerrado (sensu stricto) and in four areas of exotic pastures (Urochloa spp.) in Aquidauana, Mato Grosso do Sul, Brazil. In all, 7,544 individuals from 43 species of dung beetles were collected, and 19 species were found in both the Cerrado and exotic pastures. The abundance and species richness of dung beetles were higher in Cerrado remnants. Species composition differed between Cerrado and exotic pastures, where 11 species were classified as specialists of Cerrado, 10 species were considered specialists of exotic pastures, and 6 species were habitat generalists. Roller beetles were most negatively affected by exotic pasture establishment. We demonstrated that exotic pasture establishment has a negative impact on dung beetle assemblages in Brazilian Cerrado. The decline in abundance and richness of roller beetles has important implications for the understanding of ecosystem functioning because it can reduce the ecological functions performed by dung beetle assemblages in exotic pastures. Finally, the high number of dung beetle species shared between Cerrado and exotic pastures suggests that the Cerrado remnants is a fundamental requirement for the conservation of biodiversity of dung beetles in exotic pastures in the Brazilian Cerrado.

中文翻译：

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在巴西塞拉多建立外来牧场对蜣螂组合（鞘翅目：金龟科：金龟科）的影响

巴西塞拉多是第二大新热带生物群落，也是生物多样性的重要热点。然而，这个生态系统中土地利用的变化正在产生具有改变的自然环境和人为环境的景观，例如异国情调的牧场。在这项研究中，我们评估了本地塞拉多植被向外来牧场的转变如何影响粪甲虫组合（鞘翅目：金龟科：金龟子科）。我们在巴西南马托格罗索州 Aquidauana 的 Cerrado (sensu stricto) 的四个区域和异国情调的牧场 (Urochloa spp.) 的四个区域采样了蜣螂。总共收集了来自 43 种粪甲虫的 7,544 只个体，在塞拉多和外来牧场中发现了 19 种。塞拉多遗迹中蜣螂的丰度和物种丰富度较高。塞拉多和外来牧场的物种组成不同，其中 11 种被归类为塞拉多的专家，10 种被认为是外来牧场的专家，6 种是栖息地的通才。辊甲虫受异国牧场建立的负面影响最大。我们证明了异国牧场的建立对巴西塞拉多的蜣螂组合有负面影响。滚花甲虫丰度和丰富度的下降对理解生态系统功能具有重要意义，因为它可以减少异国牧场中粪甲虫组合所发挥的生态功能。最后，