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Author : Geological Survey (U.S.)
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.:/5 (631 download)
Download or read book Channel Changes of the Gila River in Safford Valley, Arizona 1846-1970 written by Geological Survey (U.S.) and published by . This book was released on 1965 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. E. Burkham
Publisher :
ISBN 13 :
Total Pages : 236 pages
Book Rating : 4.:/5 (497 download)
Download or read book Channel Changes of the Gila River in Safford Valley, Arizona, 1846-1970 written by D. E. Burkham and published by . This book was released on 1971 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. E. Burkham
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.3/5 (121 download)
Download or read book Channel Changes of the Gila River in Safford Valley, Arizona, 1846-1970 written by D. E. Burkham and published by . This book was released on 1972 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: A study of the geology and ground water in the Gila River flood plain and the adjacent terraces.
Download or read book Gila River Phreatophyte Project written by and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 1252 pages
Book Rating : 4.3/5 (91 download)
Download or read book U.S. Geological Survey Professional Paper written by and published by . This book was released on 1971 with total page 1252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Geological Survey (U.S.)
Publisher :
ISBN 13 :
Total Pages : 416 pages
Book Rating : 4.F/5 ( download)
Download or read book Geological Survey Professional Paper written by Geological Survey (U.S.) and published by . This book was released on 1970 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Conrad Joseph Bahre
Publisher : University of Arizona Press
ISBN 13 : 0816536392
Total Pages : 252 pages
Book Rating : 4.8/5 (165 download)
Download or read book A Legacy of Change written by Conrad Joseph Bahre and published by University of Arizona Press. This book was released on 2016-12-01 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: The arrival of Anglo settlers in the 1870s marked the beginning of major vegetation changes in southeastern Arizona, including an increase in woody plants in rangelands, the degradation of riparian wetlands, and the spread of non-native plants. While many of these changes have already been linked to human land-use through comparative photographs and historic descriptions, it has long been presumed that changes in the region's climate have also contributed to vegetation change. Geographer Conrad Bahre now challenges the view that these vegetation changes are due to climatic change. Correlating his own field research with archival records and photographs, Bahre demonstrates that most of the changes follow some type of human disturbance, such as cattle grazing, fuelwood cutting, wildfire suppression, agriculture, and road construction. Indeed, all available evidence suggests that Anglo settlement brought unprecedented changes to the land. Vegetation change in the American West has long been an issue of concern. This careful scrutiny of one corner of that region—one of the most ecologically diverse areas of the United States—shows how poorly understood is the relationship between human activities and vegetation. More important, it introduces new techniques for differentiating between natural and anthropogenic factors effecting vegetation change that can be used to help ecologists understand vegetation dynamics worldwide.
Author : Scott E. Ingram
Publisher : University of Arizona Press
ISBN 13 : 0816502188
Total Pages : 391 pages
Book Rating : 4.8/5 (165 download)
Download or read book Traditional Arid Lands Agriculture written by Scott E. Ingram and published by University of Arizona Press. This book was released on 2015-04-02 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Traditional Arid Lands Agriculture is the first of its kind. Each chapter considers four questions: what we don’t know about specific aspects of traditional agriculture, why we need to know more, how we can know more, and what research questions can be pursued to know more. What is known is presented to provide context for what is unknown. Traditional agriculture, nonindustrial plant cultivation for human use, is practiced worldwide by millions of smallholder farmers in arid lands. Advancing an understanding of traditional agriculture can improve its practice and contribute to understanding the past. Traditional agriculture has been practiced in the U.S. Southwest and northwest Mexico for at least four thousand years and intensely studied for at least one hundred years. What is not known or well-understood about traditional arid lands agriculture in this region has broad application for research, policy, and agricultural practices in arid lands worldwide. The authors represent the disciplines of archaeology, anthropology, agronomy, art, botany, geomorphology, paleoclimatology, and pedology. This multidisciplinary book will engage students, practitioners, scholars, and any interested in understanding and advancing traditional agriculture.
Author : Robert H. Webb
Publisher : University of Arizona Press
ISBN 13 : 9780816525881
Total Pages : 482 pages
Book Rating : 4.5/5 (258 download)
Download or read book The Ribbon of Green written by Robert H. Webb and published by University of Arizona Press. This book was released on 2007 with total page 482 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Author : W. R. Osterkamp
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.3/5 (121 download)
Download or read book An Analytical Treatment of Channel-morphology Relations written by W. R. Osterkamp and published by . This book was released on 1983 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 582 pages
Book Rating : 4.:/5 (319 download)
Download or read book Geological Survey Professional Paper written by and published by . This book was released on 1984 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 536 pages
Book Rating : 4.:/5 (31 download)
Download or read book Publications of the Geological Survey written by and published by . This book was released on 1971 with total page 536 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 544 pages
Book Rating : 4.F/5 ( download)
Download or read book Publications of the U.S. Geological Survey, 1971-1981 written by and published by . This book was released on 1986 with total page 544 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 180 pages
Book Rating : 4.:/5 (319 download)
Download or read book Water-resources Investigations Report written by and published by . This book was released on 1996 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Bruce LaVerne Foxworthy
Publisher :
ISBN 13 :
Total Pages : 586 pages
Book Rating : 4.:/5 (318 download)
Download or read book Volcanic Eruptions of 1980 at Mount St. Helens written by Bruce LaVerne Foxworthy and published by . This book was released on 1982 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 656 pages
Book Rating : 4.3/5 (91 download)
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1973 with total page 656 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. E. Burkham
Publisher :
ISBN 13 :
Total Pages : 36 pages
Book Rating : 4.3/5 (121 download)
Download or read book Effects of Changes in an Alluvial Channel on the Timing, Magnitude, and Transformation of Flood Waves, Southeastern Arizona written by D. E. Burkham and published by . This book was released on 1976 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
