By Dominick A. DellaSala / On April 20th, 2011
For over 30 years, I’ve worked in rainforest ecosystems. My senses are finely tuned to the sweet smell of cedar and pine, sap runs through my veins, and I have learned how to read the forest like the pages of a good mystery novel. But each year, I do an annual trek to the desert where rainforests give way to spiny, prickly things with names like pincushion and rainbow cactus, prickly pear cactus, and ocotillo. This year, I arrived in the Sonoran desert just outside Phoenix, Arizona during an early spring bloom where I was greeted by a kaleidoscope of colors and unfamiliar scents.