Outstanding plant endemism levels strongly support the recognition of campo rupestre provinces in mountaintops of eastern South America

Research identifies two distinct campo rupestre provinces—Chapada Diamantina and Southern Espinhaço—in the Espinhaço Range of eastern South America, characterized by exceptionally high plant endemism levels. These provinces, supported by network clustering analysis of 1,748 endemic angiosperm species from the Brazilian Flora 2020 Project and GBIF data, challenge traditional biogeographical classifications within the Chacoan dominion. The Southern Espinhaço province is further subdivided into three districts: Diamantina Plateau, Grão-Mogol, and Iron Quadrangle. This formalization underscores the campo rupestre's unique biodiversity and contributes to standardized bioregional recognition under the International Code of Area Nomenclature, aiding future conservation and biogeographical studies.

Colli‐Silva, M., Vasconcelos, T. N. C., & Pirani, J. R. (2019). Outstanding plant endemism levels strongly support the recognition of campo rupestre provinces in mountaintops of eastern South America. Journal of Biogeography, 46(8), 1723–1733. Portico. https://doi.org/10.1111/jbi.13585