This book presents a comprehensive overview of all aspects of ecology, including evolution, ecosystems theory, practical applications, plants, animals, biogeochemical cycles, and global change. A new chapter discusses global environmental change, human impacts on the global carbon cycle, and the possible implications for the global climate system. Six "Ecological Application Essays" demonstrate to students the real world relevance of ecological concepts. For example, Part V, Population Interactions, discusses how a lack of mushrooms helped power the Industrial Revolution. Reflecting current changes in the field of ecology, the new edition incorporates more discussion of the evolutionary perspective on ecological systems. For anyone interested in ecology.