Written in a clear, accessible style, it contains more than 6,000 entries on all aspects of ecology and related environmental scientific disciplines such as biogeography, genetics, soil science, geomorphology, atmospheric science, and oceanography. The information covered in the dictionary is wide-ranging and includes plant and animal physiology, animal behavior, pollution, conservation, habitat management, population, evolution, environmental pollution, climatology and meteorology. It also features many line drawings and useful appendices including estimations of population parameters, the geologic time-scale, SI units, and--new to this edition--a web-linked appendix of relevant organizations including both governmental agencies and conservation societies.