This is the first book to comprehensively discuss Ecuadorian soils. Richly illustrated, it provides information on the unique characteristics and distribution of these soils. Due to the influence of the Andes, which vastly modified the climate and parental materials, a relative small country like Ecuador has a wide variety of soil orders, rarely found in other countries. The country is divided into three distinctive regions by the Andes: The Coastal Plain, the Andean Highlands, and the Amazonia Region each with different soil development, influenced by the varying conditions in that region. It is also necessary to consider the Galapagos Islands as a separate region with a particular climate and parental material.

A fascinating work that provides a wealth of information on one of the world’s most biodiverse ecosystems. This is the result of investigations by almost 30 groups of researchers from various disciplines. They performed ecosystem analyses following two gradients: an altitudinal gradient and a gradient of land use intensity and ecosystem regeneration following human use. Based on these analyses, this volume discusses these findings in a huge variety of subject areas.

Volcanic eruptions are generally viewed as agents of destruction, yet they provide the parent materials from which some of the most productive soils in the world are formed. The high productivity results from a combination of unique physical, chemical and mineralogical properties. The importance and uniqueness of volcanic ash soils are exemplified by the recent establishment of the Andisol soil order in Soil Taxonomy. This book provides the first comprehensive synthesis of all aspects of volcanic ash soils in a single volume. It contains in-depth coverage of important topics including terminology, morphology, genesis, classification, mineralogy, chemistry, physical properties, productivity and utilization. A wealth of data (37 tables, 81 figures, and Appendix) mainly from the Tohoku University Andisol Data Base is used to illustrate major concepts. Twelve color plates provide a valuable visual-aid and complement the text description of the world-wide distribution for volcanic ash soils. This volume will serve as a valuable reference for soil scientists, plant scientists, ecologists and geochemists interested in biogeochemical processes occurring in soils derived form volcanic ejecta.