Amazonian Dark Earths are not only a testament to the vanished civilizations of the Amazon Basin, but may provide the answer to how the large, sophisticated societies were able to sustain intensive agriculture in an environment with mostly infertile soils. Locally known as Terra Preta de Indio or Indian black earth, these anomalous soils are even today fertile and highly productive. Though clearly associated with pre-European settlements questions remain whether the Dark Earths were intentionally produced or merely a by-product of habitation activities. This publication provides a comprehensive review of our current understanding of these fascinating soils: their origin, properties, and management through time. These new and multidisciplinary perspectives by leading experts on Amazonian Dark Earths may pave the way for the next revolution of soil management in the humid tropics.

Amazonian soils are almost universally thought of as extremely forbidding. However, it is now clear that complex societies with large, sedentary populations were present for over a millennium before European contact. Associated with these are tracts of anomalously fertile, dark soils termed terra preta or dark earths. These soils are presently an important agricultural resource within Amazonia and provide a model for developing long-term future sustainability of food production in tropical environments. The late Dutch soil scientist Wim Sombroek (1934-2003) was instrumental in bringing the significance of these soils to the attention of the world over four decades ago.

Wim saw not only the possibilities of improving the lives of small holders throughout the world with simple carbon based soil technologies, but was an early proponent of the positive synergies also achieved in regards to carbon sequestration and global climatic change abatement. Wim s vision was to form a multidisciplinary group whose members maintained the ideal of open collaboration toward the attainment of shared goals. Always encouraged and often shaped by Wim, this free association of international scholars termed the Terra Preta Nova Group came together in 2001 and has flourished. This effort has been defined by enormous productivity. Wim who is never far from any of our minds and hearts, would have loved to share the great experience of seeing the fruits of his vision as demonstrated in this volume."

The idea for the volume first came about through a conversation the editors had at the Sustainable Management of Soil Organic Matter Conference in Edinburgh in September 1999. It developed with two symposia on Amazonian dark earths that were held in 2001 in conjunction with the Conference ofLatin Americanist Geographers in Benicassim, Spain, and the Congress of the Brazi- lian Archaeological Society in Rio de Janeiro, Brazil, respectively, and culmi- nated at the First International Workshop on Terra Preta Soils held in Manaus and Santarem, Brazil, in July 2002. As a comprehensive treatment of these dis- tinctive anthropogenic soils has never been published, we decided to select papers from these symposia and develop an edited volume. The result con- tains the efforts of an international group of distinguished scholars from the disciplines of anthropology, archaeology, biology, geography, and soil science. The 15 chapters of this volume provide an array of interesting and comple- mentary interpretative stances developed from a diverse body of investigative methodologies. The readerwill note that there are some inconsistencies inter- minology and differences in interpretation among the chapter presentations. However, the editors purposely allowed these to remain and retained as much as possible of the authors' own words, since we feit that it was important to maintain the flavor of the symposium atmosphere in this volume and conse- quently did not intentionally force standardization upon the authors.

The idea for the volume first came about through a conversation the editors had at the Sustainable Management of Soil Organic Matter Conference in Edinburgh in September 1999. It developed with two symposia on Amazonian dark earths that were held in 2001 in conjunction with the Conference ofLatin Americanist Geographers in Benicassim, Spain, and the Congress of the Brazi- lian Archaeological Society in Rio de Janeiro, Brazil, respectively, and culmi- nated at the First International Workshop on Terra Preta Soils held in Manaus and Santarem, Brazil, in July 2002. As a comprehensive treatment of these dis- tinctive anthropogenic soils has never been published, we decided to select papers from these symposia and develop an edited volume. The result con- tains the efforts of an international group of distinguished scholars from the disciplines of anthropology, archaeology, biology, geography, and soil science. The 15 chapters of this volume provide an array of interesting and comple- mentary interpretative stances developed from a diverse body of investigative methodologies. The readerwill note that there are some inconsistencies inter- minology and differences in interpretation among the chapter presentations. However, the editors purposely allowed these to remain and retained as much as possible of the authors' own words, since we feit that it was important to maintain the flavor of the symposium atmosphere in this volume and conse- quently did not intentionally force standardization upon the authors.

Amazonian soils are almost universally thought of as extremely forbidding. However, it is now clear that complex societies with large, sedentary populations were present for over a millennium before European contact. Associated with these are tracts of anomalously fertile, dark soils termed terra preta or dark earths. These soils are presently an important agricultural resource within Amazonia and provide a model for developing long-term future sustainability of food production in tropical environments. The late Dutch soil scientist Wim Sombroek (1934-2003) was instrumental in bringing the significance of these soils to the attention of the world over four decades ago.

Wim saw not only the possibilities of improving the lives of small holders throughout the world with simple carbon based soil technologies, but was an early proponent of the positive synergies also achieved in regards to carbon sequestration and global climatic change abatement. Wim s vision was to form a multidisciplinary group whose members maintained the ideal of open collaboration toward the attainment of shared goals. Always encouraged and often shaped by Wim, this free association of international scholars termed the Terra Preta Nova Group came together in 2001 and has flourished. This effort has been defined by enormous productivity. Wim who is never far from any of our minds and hearts, would have loved to share the great experience of seeing the fruits of his vision as demonstrated in this volume."

The massive earthen mounds of ancient Cahokia in southwestern Illinois form the largest and most complex archaeological site in the United States. Here, at the center of a vibrant Native American culture, a settlement of Mississippian Indians grew, prospered, and declined. Tracing perceptions of the Cahokian landscape from the times of Indians and explorers, Envisioning Cahokia details the archaeology of North America's largest prehistoric urban center. Illustrated with a variety of images, this unique book provides new insights into Cahokian lifeways, land use, and culture through a landscape approach that explores the interrelationship of environment and society. Moving back and forth through time from the present landscape to the original settlement allows a unified and holistic vision of the site, in contrast to the fragmentary glimpse commonly offered by traditional approaches. Using the latest data from remote sensing and archaeological field studies, the authors examine such structures as the immense Grand Plaza and the impressive mounds used for both community ceremonies and burials. These mounds and other features of Cahokia form a political and social map, revealing a rich and elaborate culture. The authors show how settlement and ceremonial patterns defined power structures and belief systems, and how Cahokians may have perceived their place in the physical and spiritual worlds. The authors' combined experience in archaeology, geography, geology, and landscape architecture results in a dynamic interpretation of society and resources. Tracing the history of the Cahokians and their landscape, Envisioning Cahokia leads readers to a new awareness of a culture that will forever inspire wonder and respect.