Advancing Sustainability Of U S Mexico Transboundary Drylands

The drylands region shared by the United States and Mexico currently faces multiple sustainability challenges at the intersection of the human and natural systems. Warming and drying conditions threaten surface water and groundwater availability, disrupt land- and marine-based livelihood systems, and challenge the sustainability of human settlements. These biophysical challenges are exacerbated by a highly mobile and dynamic population, volatile economic and policy conditions, increased exposure to extreme events, and urbanization on marginal, vulnerable lands. The U.S. National Academies of Sciences, Engineering, and Medicine collaborated with the Mexican Academy of Sciences, Academy of Engineering, and the National Academy of Medicine to plan a 2-day binational workshop, Advancing Sustainability of U.S.-Mexico Transboundary Drylands. The workshop goals were to highlight the challenges facing the region, assess the scientific and technical capacity that each nation can bring to bear in addressing these challenges, and identify new opportunities for binational research collaboration and coordinated management approaches in the advancement of sustainability science and development. This publication summarizes the presentations and discussions from the workshop.

Drought, a serious global issue, is being aggravated by climate change. Both pedological and agronomic droughts are a major risk factor with adverse effects on agronomic productivity, food and nutritional security, and human wellbeing. This volume in the Advances in Soil Sciences series: Considers processes, factors, and causes of pedological/agronomic droughts. Discusses effects of global warming on soil drought Describes management options to enhance drought resilience of agricultural soils Presents soil moisture management options to mitigate drought Includes information on soil health and its effects on drought Explains innovative options in measurement of soil moisture content

Interdisciplinary volume considers how nine arid/semi-arid river basins with irrigated agriculture will survive future climate change, siltation, and decreased flow.

The international boundary between the United States and Mexico spans more than 1,900 miles. Along much of this international border, water is what separates one country from the other. Border Water provides a historical account of the development of governance related to transboundary and border water resources between the United States and Mexico in the last seventy years. This work examines the phases and pivot points in the development of U.S.-Mexico border water resources and reviews the theoretical approaches and explanation that impart a better understanding of these events. Author Stephen Paul Mumme, a leading expert in water policy and border studies, describes three important periods in the chronology of transboundary water management. First, Mumme examines the 1944 Water Treaty, the establishment of the International Boundary and Water Commission (IBWC) in 1945, and early transborder politics between the two governments. Next, he describes the early 1970s and the rise of environmentalism. In this period, pollution and salinization of the Colorado River Delta come into focus. Mumme shows how new actors, now including environmentalists and municipalities, broadened and strengthened the treaty’s applications in transboundary water management. The third period of transborder interaction described covers the opening and restricting of borders due to NAFTA and then 9/11. Border Water places transboundary water management in the frame of the larger binational relationship, offering a comprehensive history of transnational water management between the United States and Mexico. As we move into the next century of transnational water management, this important work offers critical insights into lessons learned and charts a path for the future.

This collection of papers examines water management in two of the world’s prominent, arid transboundary areas facing similar challenges. In the Middle East, the chronically water-short Israeli-Palestinian region has recognized the need both to conserve and supplement its traditional water sources. Across the globe on the North American continent, Arizona—a state in the southwestern United States bordering Mexico—relies significantly on the overallocated Colorado River, as well as on non-renewable groundwater supplies. For both regions, sustainable and cost-effective solutions clearly require innovative, multifaceted, and conflict-avoiding approaches. This volume is predicated on the role that “science diplomacy” can play in resolving difficult water-related issues. The history of natural-resources disputes confirms that the scientific approach can reveal ways to overcome division. Experience has shown that scientifically-trained experts who are sensitive to sociopolitical conditions can assist in developing and evaluating feasible water management solutions. The insights and expertise of a distinguished and diverse group of researchers fill these chapters. Contributors include established authorities as well as a number of budding scholars. In a field traditionally dominated by males and by engineers, this collection benefits from significant gender diversity and contributions from a broad spectrum of disciplines. Policymakers, water managers, specialists such as university researchers and consultants, and citizens all have an interest in finding sustainable strategies to address the many water-management issues discussed in this volume. The assembled papers underscore that much work remains to be done.