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Shallow wetlands that occur primarily in semi-arid to arid environments, playas are keystone ecosystems in the western Great Plains of North America. Providing irreplaceable habitat for native plants and animals, including migratory birds, they are essential for the maintenance of biotic diversity throughout the region. Playas also serve to recharge the aquifer that supplies much of the water for the Plains states. At the same time, however, large-scale habitat changes have endangered playas across the Great Plains, making urgent the need to understand their ecology and implement effective conservation measures. This book provides a state-of-the-art survey of all that is currently known about Great Plains playa ecology and conservation. Loren Smith synthesizes his own extensive research with other published studies to define playas and characterize their origin, development, flora, fauna, structure, function, and diversity. He also thoroughly explores the human relationship with playas from prehistoric times, when they served as campsites for the Clovis peoples, to today's threats to playa ecosystems from agricultural activities and global climate change. A blueprint for government agencies, private conservation groups, and concerned citizens to save these unique prairie ecosystems concludes this landmark study.
The Southern High Plains of northwestern Texas and eastern New Mexico are rich in Paleoindian archaeological sites, including such well-known ones as Clovis, Lubbock Lake, Plainview, and Midland. These sites have been extensively researched over decades, not only by archaeologists but also by geoscientists, whose studies of soils and stratigraphy have yielded important information about cultural chronology and paleoenvironments across the region. In this book, Vance T. Holliday synthesizes the data from these earlier studies with his own recent research to offer the most current and comprehensive overview of the geoarchaeology of the Southern High Plains during the earliest human occupation. He delves into twenty sites in depth, integrating new and old data on site geomorphology, stratigraphy, soils, geochronology, and paleoenvironments. He also compares the Southern High Plains sites with other sites across the Great Plains, for a broader chronological and paleoenvironmental perspective. With over ninety photographs, maps, cross sections, diagrams, and artifact drawings, this book will be essential reading for geoarchaeologists, archaeologists, and Quaternary geoscientists, as well as avocational archaeologists who take part in Paleoindian site study throughout the American West.
The 26 papers in these proceedings are divided into five sections. The first two sections are an introduction and a plenary session that introduce the principles and role the shrub life-form in the High Plains, including the changing dynamics of shrublands and grasslands during the last four plus centuries. The remaining three sections are devoted to: fire, both prescribed fire and wildfire, in shrublands and grassland-shrubland interfaces; water and ecophysiology shrubland ecosystems; and the ecology and population biology of several shrub species.
More than the economy, more than changing demographics, evenmore than education, water is the key to the future of Texas. It is not much of an overstatement to claim that water is the future of Texas. In the fall of 2000, a conference on "the world's most crucial natural resource" was held at Texas A&M University. It was a gathering of people with many viewpoints and areas of expertise, all focused on what the book's editors rightly say is and will be the state's definingissue--water. Together, the observations and recommendations brought together in this volume represent some of the best thinking about Texas' connections with water--in the past, present, and future. Ranging from broad historical overviews to technical and scientific discussions, the chapters address the questions of where we have been and where we are headed as we enter a new century of challenges to provide water for Texas.
Wetlands are prominent landscapes throughout North America. The general characteristics of wetlands are controversial, thus there has not been a systematic assessment of different types of wetlands in different parts of North America, or a compendium of the threats to their conservation. Wetland Habitats of North America adopts a geographic and habitat approach, in which experts familiar with wetlands from across North America provide analyses and syntheses of their particular region of study. Addressing a broad audience of students, scientists, engineers, environmental managers, and policy makers, this book reviews recent, scientifically rigorous literature directly relevant to understanding, managing, protecting, and restoring wetland ecosystems of North America.