... can measure. So talk of the scale of a leafor a landscape makes no sense. How big is a leaf? Some leaves are as big asyour thumbnail; others are as long as your arm. The landscape for a bearintroductiontween ... agencies, Native Americantribes, conservation organizations, and private corporations from Arizona,Baja California, California, and Sonora pored over maps, compared notes,and argued over what ... 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 landscapes over...