Each of the North American deserts has their unique species.
Cirios are unusual plants that look like large, upside-down carrots.
They are endemic to the southern Sonoran Desert. Along with their uniqueness, the deserts do have similarities in ecosystem structure and function. Similarities among Deserts Web Resources Primary Productivity of Plants provides an overview of primary productivity, the factors that limit productivity, and a comparison of net primary productivity in different ecosystems. By Michael J. Pidwirny of Okanagan University College. Study Questions 1.