This is the 4th Edition of this popular text which reviews all aspects of earthworm biology and ecology.  The book has been fully revised and updated throughout. Particular changes include: new treatments of earthworm taxonomy, diversity, migration and geographical distribution, interactions between earthworms and other soil organisms, especially microorganisms and soil-borne pests and diseases, as well as the importance of earthworms in organic waste management.Biology and Ecology of Earthworms is established as a key valuable text for students of agriculture, soil science, and soil invertebrate zoology and ecology.Clive A. Edwards is a distinguished Emeritus Professor of Entomology and Environmental Science at The Ohio State University, Columbus, OH, USA.Paul F. Hendrix is a distinguished Emeritus Professor of Ecology and Soil Science at the Univeristy of Georgia, Athens, GA, USA.Norman Q. Arancon is a Professor of Agriculture, Forestry & Natural Resource Management at the University of Hawaii-Hilo, HI, USA.