Biotic Communities catalogs and defines by biome, or biotic community, the region centered on Arizona, New Mexico, Sonora, Chihuahua, and Baja California Norte, plus portions of California, Nevada, Utah, Colorado, Texas, Coahuila, Sinaloa, and Baja California Sur. This ambitious guide is an essential companion for anyone working in natural resources management and ecological research, as well as nonspecialists looking for solid information about a particular southwestern locale. Biotic Communities is arranged by climatic formation with a short chapter for each biome describing climate, physiognomy, distribution, dominant and common plant species, and characteristic vertebrates. Subsequent chapters contain careful descriptions of zonal subdivisions.

This is a reprint of a time-tested history of Yosemite National Park by one of its most respected historians. It portrays in terms of human experience the growth of a distinct and unique conception of land management, and chronicles the thoughts and efforts of those who contributed to it. It tells of the obstacles overcome and of the pressures to break down the park concept and turn Yosemite to commercial and other ends that would deface its beauty and impair its significance. For these reasons, the book is more than a history. It traces the evolution of an idea.