Aim South American endemic ants play a central role in terrestrial ecosystems but remain poorly integrated into continent‐scale conservation assessments. Their distributions and community composition have likely been shaped by past climatic dynamics and persistent refugia. Here, we evaluate how historical climate stability and recent climatic change have influenced the distribution and turnover of endemic South American ants,...

The Cerrado biome, spanning ~2 million km 2 , is one of the most extensive and biodiverse tropical savannas, yet it is paradoxically dominated by only 30 hyperdominant tree species (~2% of all species, > 50% of all stems). However, their vulnerability to climate change and the effectiveness of current conservation efforts remain uncertain. By combining (i) species distribution models calibrated with edaphic‐climatic predictors...