Soil Water Repellency


Book Description

It has become clear that soil water repellency is much more wide-spread than formerly thought. Water repellency has been reported in most continents of the world for varying land uses and climatic conditions. Soil water repellency often leads to severe runoff and erosion, rapid leaching of surface-applied agrichemicals, and losses of water and nutrient availability for crops. At present, no optimum management strategies exist for water repellent soils, focusing on minimizing environmental risks while maintaining crop production. The book starts with a historical overview of water repellency research, followed by seven thematic sections covering 26 research chapters. The first section discusses the origin, the second the assessment, and the third the occurrence and hydrological implications of soil water repellency. The fourth section is devoted to the effect of fire on water repellency, section five deals with the physics and modeling of flow and transport in water repellent soils, section six presents amelioration techniques and farming strategies to combat soil water repellency, and section seven concludes the book with an extensive bibliography on soil water repellency.




Cassava as Animal Feed


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Challenges for Mountain Regions


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The Long, Lingering Shadow


Book Description

Students of American history know of the law’s critical role in systematizing a racial hierarchy in the United States. Showing that this history is best appreciated in a comparative perspective, The Long, Lingering Shadow looks at the parallel legal histories of race relations in the United States, Brazil, and Spanish America. Robert J. Cottrol takes the reader on a journey from the origins of New World slavery in colonial Latin America to current debates and litigation over affirmative action in Brazil and the United States, as well as contemporary struggles against racial discrimination and Afro-Latin invisibility in the Spanish-speaking nations of the hemisphere. Ranging across such topics as slavery, emancipation, scientific racism, immigration policies, racial classifications, and legal processes, Cottrol unravels a complex odyssey. By the eve of the Civil War, the U.S. slave system was rooted in a legal and cultural foundation of racial exclusion unmatched in the Western Hemisphere. That system’s legacy was later echoed in Jim Crow, the practice of legally mandated segregation. Jim Crow in turn caused leading Latin Americans to regard their nations as models of racial equality because their laws did not mandate racial discrimination— a belief that masked very real patterns of racism throughout the Americas. And yet, Cottrol says, if the United States has had a history of more-rigid racial exclusion, since the Second World War it has also had a more thorough civil rights revolution, with significant legal victories over racial discrimination. Cottrol explores this remarkable transformation and shows how it is now inspiring civil rights activists throughout the Americas.




The Andes


Book Description

The Andes are attracting global interest again: they hold valuable mineral resources, tourists appreciate their great natural beauty and the diversity of indigenous cultures, climbers scale rock and ice faces, while many others are intrigued by regional political developments, such as the Bolivarian revolution in Venezuela or the almost unfettered hegemony of the neoliberal economic model in Chile. This volume is the first attempt for decades to present a complete overview of the longest mountain chain on the planet – a region of remarkable climatic, floristic and geologic diversity, where advanced civilization developed well before the arrival of the Spanish. Today the Andes continue to be characterized by their ethnic, demographic, cultural and economic diversity, as well as by the disparity of local socioeconomic groups. The Andean countries pursue a wide range of approaches to tackle the challenges of making the best use of their natural and cultural potential without damaging their ecological basis, as well as to overcome economic disparity and foster social cohesion. This book provides insights into this unique region and its most pressing issues, complemented by a wealth of pictures and comprehensive diagrams, which, in sum, help to better understand these fascinating mountains.




Long Term Socio-Ecological Research


Book Description

The authors in this volume make a case for LTSER’s potential in providing insights, knowledge and experience necessary for a sustainability transition. This expertly edited selection of contributions from Europe and North America reviews the development of LTSER since its inception and assesses its current state, which has evolved to recognize the value of formulating solutions to the host of ecological threats we face. Through many case studies, this book gives the reader a greater sense of where we are and what still needs to be done to engage in and make meaning from long-term, place-based and cross-disciplinary engagements with socio-ecological systems.




Slavery


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This book covers the slave trade from 1562-1865 involving ten white nations and hundreds of black tribal rulers; it concentrates on the roles played by the English and the Americans.




Afro-Argentine Discourse


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In Afro-Argentine Discourse, Marvin A. Lewis attempts to write blacks back into the literary history of Argentina by treating in depth, for the first time, the written expression of Argentines of African descent during the late nineteenth and early twentieth centuries. Because their contributions are overlooked or minimized in most literary histories, it is often assumed that blacks had little or no part in the development of Argentine literature. Through original archival research, Lewis corrects this erroneous assumption by examining texts never before made available to the academic community. Afro-Argentine Discourse investigates a new dimension of the black experience in the Americas and will stir much interest and debate regarding the black presence in Argentina.




Strategies of Slaves & Women


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The author uses biographical accounts to reconstruct the lives of enslaved women.




Markets in Africa


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