Environment: California Hotspots -- Species on the Edge

This site, accompanying an exhibit about biodoversity hotspots in the state by the California Academy of Sciences, features descriptions of at-risk species in hotspot areas such as Central Valley vernal pools, Mediterranean shrublands, the Sierra Nevada, Cascade Range volcanoes, the Redwood forests, and the Klamath-Siskiyou Wilderness. The site also describes such general environmental threats as population growth and global warming. "Defining a hotspot requires understanding a region's species' distributions and endemism (the degree to which species are found only in a given place)." <http://www.calacademy.org/>