Biological Resources

Because lands administered by BLM’s St. George Field Office lie astride the transition between three major physiographic provinces including the Colorado Plateau, the Great Basin, and the Mojave Desert, Public lands support vast numbers of plant and wildlife species, many at the extreme end of their natural ranges. Elevations range from a low of 2,200 feet at the border with Arizona to nearly 10,400 feet in the Pine Valley Mountains. These features contribute to a rich biological diversity that is otherwise uncommon in parts of the arid, intermountain west. This diversity draws sportsmen, scientists, researchers, and wildlife watchers from across the North American continent to study, enjoy, or to engage in habitat improvement initiatives for the benefit of the species, many of which are listed as threatened or endangered under state and federal laws.

Great Basin collared lizards taking in the view inside Red Cliffs National Conservation Area. Photo by Cameron Rognan copyrighted.

Group of barrel cactus inside the Beaver Dam Wash National Conservation Area