Background and comparison of water-quality, streambed-sediment, and biological characteristics of streams in the Viburnum Trend and the exploration study areas, southern Missouri, 1995 and 2001 PDF Download
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Author:
Publisher: DIANE Publishing
ISBN: 1428983708
Category :
Languages : en
Pages : 24
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Author:
Publisher: DIANE Publishing
ISBN: 1428983708
Category :
Languages : en
Pages : 24
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Book Description
Author: Suzanne R. Femmer
Publisher:
ISBN:
Category : Electronic government information
Languages : en
Pages : 30
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Author: Suzanne R. Femmer
Publisher:
ISBN:
Category : Lead mines and mining
Languages : en
Pages : 0
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Author: Kidd M. Waddell
Publisher:
ISBN:
Category : Groundwater flow
Languages : en
Pages : 132
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Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1102
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Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 28
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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.
Author: Trevor Elliot
Publisher: MDPI
ISBN: 390698091X
Category : Groundwater tracers
Languages : en
Pages : 1
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Book Description
This book is a printed edition of the Special Issue "Environmental Tracers" that was published in Water
Author: K. J. Schulz
Publisher: Geological Survey
ISBN: 9781411339910
Category : Industrial minerals
Languages : en
Pages : 868
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Book Description
As the importance and dependence of specific mineral commodities increase, so does concern about their supply. The United States is currently 100 percent reliant on foreign sources for 20 mineral commodities and imports the majority of its supply of more than 50 mineral commodities. Mineral commodities that have important uses and face potential supply disruption are critical to American economic and national security. However, a mineral commodity's importance and the nature of its supply chain can change with time; a mineral commodity that may not have been considered critical 25 years ago may be critical today, and one considered critical today may not be so in the future. The U.S. Geological Survey has produced this volume to describe a select group of mineral commodities currently critical to our economy and security. For each mineral commodity covered, the authors provide a comprehensive look at (1) the commodity's use; (2) the geology and global distribution of the mineral deposit types that account for the present and possible future supply of the commodity; (3) the current status of production, reserves, and resources in the United States and globally; and (4) environmental considerations related to the commodity's production from different types of mineral deposits. The volume describes U.S. critical mineral resources in a global context, for no country can be self-sufficient for all its mineral commodity needs, and the United States will always rely on global mineral commodity supply chains. This volume provides the scientific understanding of critical mineral resources required for informed decisionmaking by those responsible for ensuring that the United States has a secure and sustainable supply of mineral commodities.
Author:
Publisher:
ISBN:
Category : Air quality
Languages : en
Pages : 68
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