... in the Sonoran Desert than in the Brazilian Amazon, and will vary as well depending on the available infor-mation and the resources on hand to analyze that information. Rob Mar-shall’s team ... researchers and representatives of federal, state, and municipal agencies, Native Americantribes, conservation organizations, and private corporations from Arizona,Baja California, California, ... EricSanderson, and their colleagues have added a new twist to the notion of an umbrella species: take a jaguar’s-eye view of the landscape. Not just a jaguar, actually, but any large animal that uses...