Woody wetlands constitute a relatively small but extremely important part of the landscape in the southwestern United States. These riparian habitats support more than one-third of the regionÕs vascular plant species, are home to a variety of wildlife, and provide essential havens for dozens of migratory animals. Because of their limited size and disproportionately high biological value, the goal of protecting wetland environments frequently takes priority over nearly all other habitat types. In The Ribbon of Green, hydrologists Robert H. Webb, and Stanley A. Leake and botanist Raymond M. Turner examine the factors that affect the stability of woody riparian vegetation, one of the largest components of riparian areas. Such factors include the diversion of surface water, flood control, and the excessive use of groundwater. Combining repeat photography with historical context and information on species composition, they document more than 140 years of change. Contrary to the common assumption of widespread losses of this type of ecosystem, the authors show that vegetation has increased on many river reaches as a result of flood control, favorable climatic conditions, and large winter floods that encourage ecosystem disturbance, germination, and the establishment of species in newly generated openings. Bringing well-documented and accessible insights to the ecological study of wetlands, this book will influence our perception of change in riparian ecosystems and how riparian restoration is practiced in the Southwest, and it will serve as an important reference in courses on plant ecology, riparian ecology, and ecosystem management.
Over the past century, humans have molded the Colorado River to serve their own needs, resulting in significant impacts to the river and its ecosystems. Today, many scientists, public officials, and citizens hope to restore some of the lost resources in portions of the river and its surrounding lands. Environmental restoration on the scale of the Colorado River basin is immensely challenging; in addition to an almost overwhelming array of technical difficulties, it is fraught with perplexing questions about the appropriate goals of restoration and the extent to which environmental restoration must be balanced against environmental changes designed to promote and sustain human economic development. Restoring Colorado River Ecosystems explores the many questions and challenges surrounding the issue of large-scale restoration of the Colorado River basin, and of large-scale restoration in general. Robert W. Adler evaluates the relationships among the laws, policies, and institutions governing use and management of the Colorado River for human benefit and those designed to protect and restore the river and its environment. He examines and critiques the often challenging interactions among law, science, economics, and politics within which restoration efforts must operate. Ultimately, he suggests that a broad concept of “restoration” is needed to navigate those uncertain waters, and to strike an appropriate balance between human and environmental needs. While the book is primarily about restoration of Colorado River ecosystems, it is also about uncertainty, conflict, competing values, and the nature, pace, and implications of environmental change. It is about our place in the natural environment, and whether there are limits to that presence we ought to respect. And it is about our responsibility to the ecosystems we live in and use.
The Changing Mile, originally published in 1965, was a benchmark in ecological studies, demonstrating the prevalence of change in a seemingly changeless place. Photographs made throughout the Sonoran Desert region in the late 1800s and early 1900s were juxtaposed with photographs of the same locations taken many decades later. The nearly one hundred pairs of images revealed that climate has played a strong role in initiating many changes in the region. This new book updates the classic by adding recent photographs to the original pairs, providing another three decades of data and showing even more clearly the extent of change across the landscape. During these same three decades, abundant information about climatic variability, land use, and plant ecology has accumulated, making it possible to determine causes of change with more confidence. Using nearly two hundred additional triplicate sets of unpublished photographs, The Changing Mile Revisited utilizes repeat photographs selected from almost three hundred stations located in southern Arizona, in the Pinacate region of Mexico, and along the coast of the Gulf of California. Coarse photogrammetric analysis of this enlarged photographic set shows the varied response of the region's major plant species to the forces of change. The images show vegetation across the entire region at sites ranging in elevation from sea level to a mile above sea level. Some sites are truly arid, while others are located above the desert in grassland and woodland. Common names are used for most plants and animals (with Latin equivalents in endnotes) to make the book more accessible to non-technical readers. The original Changing Mile was based upon a unique set of data that allowed the authors to evaluate the extent and magnitude of vegetation change in a large geographic region. By extending the original landmark study, The Changing Mile Revisited will remain an indispensable reference for all concerned with the fragile desert environment.
This practical, applications-based professional handbook comprehensively covers the theory and applications of Fourier Analysis, spanning topics from engineering mathematics, signal processing and related multidimensional transform theory, and quantum physics to elementary deterministic finance and even the foundations of western music theory.
Over the millennia, the drainageway we now call the Santa Cruz River has seen many ebbs, flows, and floods. Throughout its long history, the river has meandered. It has flowed on the surface. It has carved deep fissures, and it has widened and narrowed.As readers of Requiem for the Santa Cruz learn, these are events that also have taken place in historic times. Authored by an esteemed group of scientists, Requiem for the Santa Cruz thoroughly documents this river, which flows through Tucson, Arizona, as a prime example of arroyo cutting, a process where heavy rains cut down through rock to create deep channeling. Each chapter provides a unique opportunity to chronicle the arroyo legacy, evaluate its causes, and consider its aftermath. Using more than a century of observations and collections, the authors reconstruct the physical, biological, and cultural circumstances of the river's entrenchment, widening, and subsequent partial filling. Today, communities everywhere face this conundrum: do we manageephemeral rivers through urban areas for flood control, or do we attempt to restore them to some previous state of naturalness? Requiem for the Santa Cruz carefully explores the channel-change legacy, the efficacy of attempts to stabilize it, and the nascent attempts at river restoration to give a long-term perspective on management of rivers in arid lands. Tied together by authors who have committed their life's work to the study of arid-land rivers, this book offers a touching and scientifically grounded requiem for the Santa Cruz and every southwestern river"--
Dams & river regulation have become an integral part of 20th-century landscape & livelihood. Virtually every river in the lower 48 states is now regulated by dams, locks, or diversions. This report illustrates the downstream consequences of dams & explains the basis on which rivers can be scientifically managed. Following a look at a free-flowing river -- the upper Salt River of Arizona -- & its natural cycles of flow & sediment, 6 regulated rivers are examined. Each of these rivers -- the Snake, Rio Grande, Chattahoochee, Platte, Green & Colorado -- highlights a particular use of a dam or a particular downstream effect.
Photographs made in Grand Canyon a century ago may provide us today with a sense of history; photographs made a century later from the same vantage points give us a more precise picture of change in this seemingly timeless place. Between 1889 and 1890, Robert Brewster Stanton made photographs every 1-2 miles through the river corridor for the purpose of planning a water-level railroad route and produced the largest collection of photographs of the Colorado River at one point in time. Robert Webb, a USGS hydrologist conducting research on debris flows in the Canyon, obtained the photographs and from 1989 to 1995 replicated all 445 of the views captured by Stanton, matching as closely as possible the original camera positions and lighting conditions. Grand Canyon, a Century of Change assembles the most dramatic of these paired photographs to demonstrate both the persistence of nature and the presence of humanity. Unexpected longevity of some plant species, effects of animal grazing, and expansion of cacti are all captured by the replicate photographs. More telling is evidence of the impact of Glen Canyon Dam: increased riparian vegetation, new marshes, aggraded debris fans, and eroded sand bars. In the accompanying text, Webb provides a thorough analysis of what each pair of photographs shows and places the project in its historical context. Complementing his narrative are six sidebar articles by authorities on Canyon natural history that further attest to a century of change. The level of detail obtained from the photographs represents one of the most extensive long-term monitoring efforts ever conducted in a national park; it is the most detailed documentation effort ever performed using repeat photography. Much more than simply a picture book, Grand Canyon, a Century of Change is an environmental history of the river corridor, a fascinating book that clearly shows the impact of human influence on Grand Canyon and warns us that its future is very much in our hands.
Chief among its contents we find abstracts of land grants, court records, conveyances, births, deaths, marriages, wills, petitions, military records (including a list of North Carolina Officers and Soldiers of the Continental Line, 1775-1782), licenses, and oaths. The abstracts derive from records now located in the state archives and from the public records of the following present-day counties of the Old Albemarle region: Beaufort, Bertie, Camden, Chowan, Currituck, Dare, Gates, Halifax, Hyde, Martin, Northampton, Pasquotank, Perquimans, Tyrrell, and Washington, and the Virginia counties of Surry and Isle of Wight.
Approximately 29 million Americans are diagnosed with Type 2 diabetes annually. Of that number, only about 36 percent (10.44 million diabetes sufferers) achieve satisfactory medical outcomes and would need additional help—rarely available—to reliably control their glucose levels. Contrary to popular belief, although anti-diabetic medications can lower sugar levels, nevertheless they have a poor performance track record because inflammation in the blood vessels persists. This book details recent scientific findings that cardiovascular, kidney, vision, peripheral nervous system, and other body damage caused by chronic high levels of blood sugar (hyperglycemia) in Type 2 diabetes is actually due to excessive generation of unopposed free radicals and reactive oxygen species (ROS). These, in turn, cause chronic systemic inflammation and dysfunction of the endothelial lining of the arterial blood vessels, jeopardizing the formation of the protective molecule nitric oxide (NO), thus severely impairing the blood supply to every organ and tissue in the body. This book also catalogues the evidence that chronic hyperglycemia causes profound and often irreversible damage—even long before Type 2 diabetes has been diagnosed. In addition, because conventional prescription treatments are, unfortunately, often inadequate, the book details evidence-based complementary means of blood sugar control.
Sacred Ground is a sumptuous photographic portrait of New Orleans's legendary cemeteries. Robert S. Brantley celebrates the otherworldly landscapes, intricate ironwork, evocative memorials, and stately monuments as vibrant sites of remembrance. New Orleans history is further revealed through biographies of twenty individuals whose grave sites are among those featured, including entrepreneurs, celebrated musicians, a world-class violin maker, an ex-slave turned minister, a ship's captain, and a young soldier felled by Spanish flu while in basic training for World War I. The rich duotone photographs, organized by cemetery, are followed by an index identifying the tombs and their iconography; an introduction by S. Frederick Starr provides background on New Orleans cemetery history, culture, and burial customs. Sacred Ground provides a stunning exploration of the traditions born of New Orleans's unique religious, cultural, and ethnic diversity.
This undergraduate textbook presents thorough coverage of the standard topics of classical optics and optical instrument design; it also offers significant details regarding the concepts of modern optics. 1969 edition.
The U.S. merchant marine played a critical, though often overlooked, role in World War II. This reference work provides a brief narrative of each of the recorded attacks on American-flagged merchant ships, as well as an accounting of the men and the ships, which were a part of this worldwide conflict. In addition to the wealth of data on the ships, their crews and cargoes, it depicts the exciting and often violent story of the hundreds of enemy attacks on convoys and lone merchant vessels. Evident within the narrative is the gallantry and sacrifice of naval gun crews and the merchant crewmen.
No one in America would deny that the weather has changed drastically in our lifetime. We read about El Niño and La Niña, but how many of us really understand the big picture beyond our own front windows or even the headlines on the Weather Channel? Hydrologists and climatologists have long been aware of the role of regional climate in predicting floods and understanding droughts. But with our growing sense of a variable climate, it is important to reassess these natural disasters not as isolated events but as related phenomena. This book shows that floods and droughts don't happen by accident but are the products of patterns of wind, temperature, and precipitation that produce meteorologic extremes. It introduces the mechanics of global weather, puts these processes into the longer-term framework of climate, and then explores the evolution of climatic patterns through time to show that floods and droughts, once considered isolated "acts of God," are often related events driven by the same forces that shape the entire atmosphere. Michael Collier and Robert Webb offer a fresh, insightful look at what we know about floods, droughts, and climate variability—and their impact on people—in an easy-to-read text, with dramatic photos, that assumes no previous understanding of climate processes. They emphasize natural, long-term mechanisms of climate change, explaining how floods and droughts relate to climate variability over years and decades. They also show the human side of some of the most destructive weather disasters in history. As Collier and Webb ably demonstrate, "climate" may not be the smooth continuum of meteorologic possibilities we supposed but rather the sum of multiple processes operating both regionally and globally on different time scales. Amid the highly politicized discussion of our changing environment, Floods, Droughts, and Climate Change offers a straightforward scientific account of weather crises that can help students and general readers better understand the causes of climate variability and the consequences for their lives.
Woody wetlands constitute a relatively small but extremely important part of the landscape in the southwestern United States. These riparian habitats support more than one-third of the regionÕs vascular plant species, are home to a variety of wildlife, and provide essential havens for dozens of migratory animals. Because of their limited size and disproportionately high biological value, the goal of protecting wetland environments frequently takes priority over nearly all other habitat types. In The Ribbon of Green, hydrologists Robert H. Webb, and Stanley A. Leake and botanist Raymond M. Turner examine the factors that affect the stability of woody riparian vegetation, one of the largest components of riparian areas. Such factors include the diversion of surface water, flood control, and the excessive use of groundwater. Combining repeat photography with historical context and information on species composition, they document more than 140 years of change. Contrary to the common assumption of widespread losses of this type of ecosystem, the authors show that vegetation has increased on many river reaches as a result of flood control, favorable climatic conditions, and large winter floods that encourage ecosystem disturbance, germination, and the establishment of species in newly generated openings. Bringing well-documented and accessible insights to the ecological study of wetlands, this book will influence our perception of change in riparian ecosystems and how riparian restoration is practiced in the Southwest, and it will serve as an important reference in courses on plant ecology, riparian ecology, and ecosystem management.
Ideal for fellows and practicing pulmonologists who need an authoritative, comprehensive reference on all aspects of pulmonary medicine, Murray and Nadel’s Textbook of Respiratory Medicine offers the most definitive content on basic science, diagnosis, evaluation and treatment of the full spectrum of respiratory diseases. Full-color design enhances teaching points and highlights challenging concepts. Understand clinical applications and the scientific principles of respiratory medicine. Detailed explanations of each disease entity allow you to work through differential diagnoses. Key Points and Key Reading sections highlight the most useful references and resources for each chapter. An expanded sleep section now covers four chapters and includes control of breathing, consequences of sleep disruption, as well as obstructive and central apnea. New chapters in the Critical Care section cover Noninvasive Ventilation (NIV) and Extracorporeal Support of Gas Exchange (ECMO). New chapters focusing on diagnostic techniques now include Invasive Diagnostic Imaging and Image-Guided Interventions and Positron Emission Tomography, and a new chapter on Therapeutic Bronchoscopy highlights the interventional role of pulmonologists.
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