An introduction is provided for the modern and fossil vascular plant flora of the contiguous protected areas of Organ Pipe Cactus National Monument, Cabeza Prieta National Wildlife Refuge, and the Tinajas Altas Region in southwestern Arizona—the heart of the Sonoran Desert. These three entities…
Reports, Papers, Journal Articles
Reports, Papers, Journal Articles
Bi-National Conference September 19-23, 1994 Tucson, Arizona
This conference brought together scientists and managers from government, universities, and private organizations to examine the biological diversity and management challenges of the unique "sky island" ecosystems of the…
Image Content
People know about mistletoe berries, but Condalia globosa appear to also be a favorite food source for the Phainopepla.
Reports, Papers, Journal Articles
In the Shadow of the Wall, a two-part Defenders of Wildlife report, explores these and other conservation consequences of extending the wall along the U.S.-Mexico border in detail. Part I: Wildlife, Habitat and Collaborative Conservation at Risk provides an overview of how the wall affects…
Map
Both the US and Mexico make available free, high quality, detailed topo maps at various scales!
Download US topo maps at the USGS Store. Use the locator map to find your desired location, then click to get a location bubble, which you then click on for a list of…
Reports, Papers, Journal Articles
The Apachian-Madrean region is a zone of confluence and geographic termini of species and floras from the north and the south. Lower and intermediate elevations support many taxa of tropical plants and animals that are at their northernmost limits. It is a region of tremendous habitat diversity…
Image Content
More info on spiny-tailed iguana at the Tucson Herp Society.
Article
El Imparcial publishes videos and articles on recent Madrean Discovery Expedition to Sierra El Tigre
Articles
Sierra del Tigre, manto de biodiversidad Expeditión a favor de la ciencia y la conservación Es Sierra El Tigre refugio de alacranes Largo, difícil, pero majestuoso camino Pequeños insectos que sirven para polinizar Viven para la conservación de la naturaleza…
Gallery
This was a long trip over a short distance. A large cadre of biologists from Arizona and Sonora made the trip to enhance biological data about the mountain and region.
The trip was initiated near Nacozari de Garcia with the destination being the high point of the Sierra el Tigre just…
Article
The Sierra la Mariquita was decreed a Voluntary Protected Natural Area on May 12, 2015. This Sky Island is owned by the Instituto Nacional de Astrofiscica (the Mexican national astronomy organization).