This book presents an evolutionary biogeographic analysis of the Mexican Transition Zone, which is situated in the overlap of the Nearctic and Neotropical regions. It includes a comprehensive review of previous track, cladistic and molecular biogeographic analyses and is illustrated with full color maps and vegetation photographs of the respective areas covered. Given its scope, the book will be of interest to students and researchers whose work involves systematic and biogeographic analyses of plant and animal taxa of the Mexican Transition Zone or other transition zones of the world, and to ecologists working in biodiversity conservation, who will be able to appreciate the evolutionary relevance of the Mexican Transition Zone for establishing conservation areas..

Neotropical Biogeography: Regionalization and Evolution presents the most comprehensive single-source treatment of the Neotropical region derived from evolutionary biogeographic studies. The book provides a biogeographic regionalization based on distributional patterns of plant and animal taxa, discusses biotic relationships drawn from track and cladistic biogeographic analyses, and identifies cenocrons (subsets of taxa within biotas identified by their common origin and evolutionary history). It includes maps, area cladograms and vegetation profiles. The aim of this reference is to provide a biogeographic regionalization that can be used by graduate students, researchers and other professionals concerned with understanding and describing distributional patterns of plants and animals in the Neotropical region. It covers the 53 biogeographic provinces of the Neotropical region that are classified into the Antillean, Brazilian and Chacoan subregions, and the Mexican and South American transition zones.

This book addresses the technical, health, regulatory, and social aspects of ground water withdrawals, water use, and water quality in the metropolitan area of Mexico City, and makes recommendations to improve the balance of water supply, water demand, and water conservation. The study came about through a nongovernmental partnership between the U.S. National Academy of Sciences' National Research Council and the Mexican Academies of Science and Engineering. The book will contain a Spanish-language translation of the complete English text.

The United States-Mexico border zone is one of the busiest and most dangerous in the world. NAFTA and rapid industrialization on the Mexican side have brought trade, travel, migration, and consequently, organized crime and corruption to the region on an unprecedented scale. Until recently, crime at the border was viewed as a local law enforcement problem with drug trafficking—a matter of "beefing" up police and "hardening" the border. At the turn of the century, that limited perception has changed. The range of criminal activity at the border now extends beyond drugs to include smuggling of arms, people, vehicles, financial instruments, environmentally dangerous substances, endangered species, and archeological objects. Such widespread trafficking involves complex, high-level criminal-political alliances that local lawenforcement alone can't address. Researchers of the region, as well as officials from both capitals, now see the border as a set of systemic problems that threaten the economic, political, and social health of their countries as a whole. Organized Crime and Democratic Governability brings together scholars and specialists, including current and former government officials, from both sides of the border to trace the history and define the reality of this situation. Their diverse perspectives place the issue of organized crime in historical, political, economic, and cultural contexts unattainable by single-author studies. Contributors examine broad issues related to the political systems of both countries, as well as the specific actors—crime gangs, government officials, prosecutors, police, and the military—involved in the ongoing drama of the border. Editors Bailey and Godson provide an interpretive frame, a "continuum of governability," that will guide researchers and policymakers toward defining goals and solutions to the complex problem that, along with a border, the United States and Mexico now share.

One of the most surprising developments in Mexico's transition to democracy is the outbreak of criminal wars and large-scale criminal violence. Why did Mexican drug cartels go to war as the country transitioned away from one-party rule? And why have criminal wars proliferated as democracy has consolidated and elections have become more competitive subnationally? In Votes, Drugs, and Violence, Guillermo Trejo and Sandra Ley develop a political theory of criminal violence in weak democracies that elucidates how democratic politics and the fragmentation of power fundamentally shape cartels' incentives for war and peace. Drawing on in-depth case studies and statistical analysis spanning more than two decades and multiple levels of government, Trejo and Ley show that electoral competition and partisan conflict were key drivers of the outbreak of Mexico's crime wars, the intensification of violence, and the expansion of war and violence to the spheres of local politics and civil society.

Introduction -- Mesozoic depositional evolution -- Cenozoic depositional evolution -- Petroleum habitat.