A Photographic History of Vegetation and Stream Channel Changes in San Juan County, Utah PDF Download
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Author: Earl C. Hindley
Publisher:
ISBN: 9784875950257
Category : Landscapes
Languages : en
Pages : 121
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Book Description
An evaluation of ecological changes throughout San Juan County, Utah through the comparison of historic photographs with contemporary photographic images.
Author: Earl C. Hindley
Publisher:
ISBN: 9784875950257
Category : Landscapes
Languages : en
Pages : 121
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Book Description
An evaluation of ecological changes throughout San Juan County, Utah through the comparison of historic photographs with contemporary photographic images.
Author: Robert H. Webb
Publisher: University of Arizona Press
ISBN: 9780816525881
Category : Science
Languages : en
Pages : 482
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Book Description
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: David A. Prevedel
Publisher:
ISBN:
Category : Grazing
Languages : en
Pages : 68
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Book Description
Author: Robert H. Webb
Publisher:
ISBN:
Category : History
Languages : en
Pages : 296
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Book Description
THIS AMBITIOUS BOOK will enthrall armchair naturalists and river runners alike, offering a stunning tour through the natural, environmental, and human history of Cataract Canyon, a seventeen-mile run of free-flowing river above Lake Powell in the canyonlands of southern Utah. Setting the stage with preliminary chapters on geology and hydrology, prehistory and geography, biology, and river-running history the authors take the reader on a downriver journey, narrating an exploration of the river that is breathtaking in scope. From the plants and animals that live along its banks to the humans who seek out its rapids, from the wind and water that continue to shape the landscape to the government agencies that seek to control it, all of these become stories woven into the larger fabric of a beautiful, fragile, complex ecosystem where change--whether good or bad--is inevitable.
Author: James M Aton
Publisher: University Press of Colorado
ISBN: 0874213975
Category : Nature
Languages : en
Pages : 592
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Book Description
The authors recount twelve millennia of history along the lower San Juan River, much of it the story of mostly unsuccessful human attempts to make a living from the river's arid and fickle environment. From the Anasazi to government dam builders, from Navajo to Mormon herders and farmers, from scientific explorers to busted miners, the San Juan has attracted more attention and fueled more hopes than such a remote, unpromising, and muddy stream would seem to merit.
Author: Richard Duane Guymon
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 200
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Book Description
Author: Frank Silvey
Publisher:
ISBN:
Category : Cattle trade
Languages : en
Pages :
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Book Description
Author: Geological Society of America
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 960
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Book Description
Vols. 1-44 include Proceedings of the annual meeting, 1889-1933, later published separately.
Author: Herbert Ernest Gregory
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 180
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309082951
Category : Science
Languages : en
Pages : 449
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Book Description
The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.
