This magnificent flora of the Sonoran Desert’s southern edge represents decades of meticulous work and the genius of Richard Felger (1934–2020) and his colleagues at their best. It is many things at once. A project of passion that was sparked by a trip in 1953 by an impressionable young…

Residents of the Rio Cocospera river valley and the town of Imuris were shocked to learn of a huge project already under construction in late 2023. This project is a brand new railway segment from the Imuris area to Nogales, but further east than the current railway, cutting through the…

Ecoregions denote areas of general similarity in ecosystems and in the type, quality, and quantity of environmental resources; they are designed to serve as a spatial framework for the research, assessment, management, and monitoring of ecosystems and ecosystem components. By recognizing the…

The Mammals of Rancho El Aribabi fills an important gap in the detailed knowledge of the diversity and abundance of the mammals in the Sky Island region of the U.S. and Mexico borderlands. The multiyear camera trapping effort captures a thorough inventory and baseline of this private protected…