Structure And Function Of A Chihuahuan Desert Ecosystem

The Jornada Basin LTER is located in the Chihuahuan Desert, the largest in North America. This region of south central New Mexico has a history of nearly 100 years as the basis for scientific research. This work gives a thorough, encompassing review of the tremendous array of observations resulting from experiments conducted in this ecosystem. Beginning with thorough descriptions of the most salient features of the region, the book then reviews a wide range of archived and active data sets on a diversity of biotic and abiotic features. It next presents a syntheses of important topics including livestock grazing and remediation efforts. A concluding chapter provides a synthesis of the principles that have emerged from this body of work, and how these relate to the broader fields of ecology and natural resource management. It concludes with recommendations for future research directions. The insightful views expressed in this volume should guide management of arid landscapes globally. This is the sixth volume in the Long Term Ecological Network Series.

"The Jornada Basin LTER is located in the Chihuahuan Desert in south-central New Mexico Research in the basin formally began in 1912, with the creation by Presidential Order of the 72,000-hectare Jornada Range Reserve within the United States Department of Agriculture. This volume synthesizes one century of field research in the largest desert in North America."--BOOK JACKET.

This volume explores the challenges of sustaining long-term ecological research through a historical analysis of the Long Term Ecological Research Program created by the U.S. National Science Foundation in 1980. The book examines reasons for the creation of the Program, an overview of its 40-year history, and in-depth historical analysis of selected sites. Themes explored include the broader impact of this program on society, including its relevance to environmental policy and understanding global climate change, the challenge of extending ecosystem ecology into urban environments, and links to creative arts and humanities projects. A major theme is the evolution of a new type of network science, involving comparative studies, innovation in information management, creation of socio-ecological frameworks, development of governance structures, and formation of an International Long Term Ecological Research Network with worldwide reach. The book’s themes will interest historians, philosophers and social scientists interested in ecological and environmental sciences, as well as researchers across many disciplines who are involved in long-term ecological research.

The United States and MexicoÕs shared environment extends far beyond the political line. For instance, it comprises the plant and animal species whose natural distributions extend deep into each nation along with the waters in rivers and aquifers that support ecosystem function far removed from the border. Conservation of Shared Environments presents a broad perspective on the ecological, social and political challenges of conserving biodiversity across the U.S.-Mexico border. Covering topics as diverse as wildlife and grassland preservation, water rights, ecosystem services, indigenous peoples, and the ecological consequences of border security, the contributors illustrate collaborative, transboundary efforts to overcome cross-border conservation challenges. This volume offers scientific analysis as well as insight for bridging gaps between researchers, policymakers, and the public. For more information on this and other volumes in the series, visit The Edge Web site.

This book begins with a brief account of the extraordinary sequence of events that led to emergence of grasslands as major vegetation formations that now occupy some of the driest and hottest and the highest and coldest on earth as well as vast steppes and prairies in more temperate climes. It is the story of grasses successfully competing with forests and woodlands, aided and abetted by grazing herbivores and by humans and their use of fire as a tool. It is a story of adaptation to changing climates and the changing biophysical environments. A major focus of the book is the Palaearctic biogeographic realm that extends over some 45 million km2 and thus more than 1/3 of the terrestrial ice-free surface on Earth. It comprises extensive grasslands of different types and origin, which can be subdivided into (1) natural grasslands with (1a) steppes (climatogenic in dry climates), (1b) arctic-alpine grasslands (climatogenic in cold climates) and (1c) azonal and extrazonal grasslands (pedogenic and topogenic) as well as (2) secondary grasslands created and sustained by human activities, such as livestock grazing, mowing or burning. Grasslands of the Palaearctic do not only form a major basis for the agriculture of the region and thus its food supply, but are also crucial for other ecosystem services and host a supra proportional part of the realm’s plant and animal diversity. To reflect that suitability of grasslands for biodiversity strongly depends on their state, we apply the term High Nature Value grassland to those natural grasslands that are not degraded (in good state) and those secondary grasslands that are not intensified (semi-natural). The situation in a variety of countries where grasslands are evolving under the influence of global climate change is also considered. Case studies are presented on Southern Africa, Eastern Africa, India, China, South America, North America and Australia. The concluding chapter examines a set of themes arising from the chapters that make up the bulk of this book. The following provide a focus: recent history of grassland biomes – brief recap of current thinking and recent trends with special reference to dry grasslands in the Palearctic regions; the current status of grasslands and germplasm resources (biodiversity) – an overview; management systems that ensure sustainability; how to recover degraded grasslands; socio-economic issues and considerations in grassland management; the impacts of environmental problems in grasslands such as future climate change and intensification and the problems/prospects facing pastoralists and other grassland-based livestock producers.

This book explores the current challenges with regard to uncertainty and risk in water management, as well as the interlinkages between drought and water management. It focuses on the challenges for water management organisations, which are expected to adapt to such changes and implement adaptive water management. The book proposes a methodology for assessing organisations’ adaptive capacity, named REACT, and demonstrates its application in a case study. It subsequently analyses the barriers hindering water management organisations’ ability to adapt, and investigates the socio-cultural and economic barriers in water governance to applying adaptive water management (AWM) strategies. Lastly, the book describes how to enable AWM in order to face current and future drought risks by integrating it with drought risk management. Given its scope, it will appeal to scientists, pracademics and professionals from academia, the water industry and involved in policymaking.

This second edition provides extensively expanded coverage of North American vegetation from arctic tundra to tropical forests.