Nutrients in Streams and Rivers Across the Nation -- 1992-2001 PDF Download
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Author: David K. Mueller
Publisher:
ISBN:
Category : Nutrient pollution of water
Languages : en
Pages : 56
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Book Description
Author: David K. Mueller
Publisher:
ISBN:
Category : Nutrient pollution of water
Languages : en
Pages : 56
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Book Description
Author: Mark D. Munn
Publisher: United States Department of the Interior
ISBN: 9781411341838
Category : Nature
Languages : en
Pages : 92
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Book Description
"National Water-Quality Assessment Project."
Author:
Publisher: DIANE Publishing
ISBN: 9781422325827
Category :
Languages : en
Pages : 182
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Book Description
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309185653
Category : Science
Languages : en
Pages : 86
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Book Description
National interests in greater energy independence, concurrent with favorable market forces, have driven increased production of corn-based ethanol in the United States and research into the next generation of biofuels. The trend is changing the national agricultural landscape and has raised concerns about potential impacts on the nation's water resources. To help illuminate these issues, the National Research Council held a colloquium on July 12, 2007 in Washington, DC. Water Implications of Biofuels Production in the United States, based in part on discussions at the colloquium, concludes that if projected future increases in use of corn for ethanol production do occur, the increase in harm to water quality could be considerable from the increases in fertilizer use, pesticide use, and soil erosion associated with growing crops such as corn. Water supply problems could also develop, both from the water needed to grow biofuels crops and water used at ethanol processing plants, especially in regions where water supplies are already overdrawn. The production of "cellulosic ethanol," derived from fibrous material such as wheat straw, native grasses, and forest trimmings is expected to have less water quality impact but cannot yet be produced on a commerical scale. To move toward a goal of reducing water impacts of biofuels, a policy bridge will likely be needed to encourage growth of new technologies, best agricultural practies, and the development of traditional and cellulosic crops that require less water and fertilizer and are optimized for fuel production.
Author:
Publisher:
ISBN:
Category : Geology
Languages : en
Pages : 50
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Book Description
Author: Adrian X. Esparza
Publisher: Springer Science & Business Media
ISBN: 0387981675
Category : Nature
Languages : en
Pages : 267
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Book Description
Much of the country’s recent population growth is situated in exurban areas. By many accounts exurbanization has become the dominant pattern of land development in the country and there is no indication it will slow in the foreseeable future (Theobald 2005; Brown et al. 2005; Glennon and Kretser 2005). By definition, exurban development takes place beyond the metropolitan fringe, often in rural and remote areas. The development of new exurban communities is a growing trend, especially in the West. In this case, developers and homebuilders seek large tracts of land, up to thousands of acres, in rural areas (typically within 50 miles of a large city) where they plan entire communities consisting of commercial, retail and residential land uses. Recreational amenities such as golf courses and hiking/biking trails are often included in these master-planned developments. Our philosophy is reflected in the book’s two objectives. First, we seek to document the extent and impacts of exurban development across the country. At issue is demonstrating why planners and the public-at-large should be concerned about exurbanization. We will demonstrate that even though exurbanization favors amenity rich regions, it affects all areas of the country through the loss of agricultural and grazing lands, impacts to watersheds and land modification. A summary of environmental impacts is presented, including the loss of wildlands and agricultural productivity, land modification, soil erosion, impacts to terrestrial hydrologic systems, the loss of biodiversity, nonnative and endangered species and other topics. Our second aim is to provide readers from diverse (nonscientific) backgrounds with a working knowledge of how and why exurbanization impacts environmental systems. This is accomplished by working closely to ensure contributors follow a specific outline for each chapter. First, contributors will spell out fundamental concepts, principles and processes that apply to their area of expertise (e.g., riparian areas). Contributors will move beyond a cursory understanding of ecological processes without overwhelming readers with the dense material found typically in specialized texts. For this reason, visuals and other support materials will be integral to each chapter. We have chosen contributors carefully based on their record as research scientists and acumen as educators. Second, once the mechanics have been laid out, authors will explain how and why land development in nearby areas influences ecosystems. Issues of interdependency, modification and adaptation, spatial scale and varying time horizons will be featured. Third, contributors will weigh in on the pros and cons of various land-development schemes. Fourth, authors will share their thinking on the merits of conservation devices such as wildlife corridors, open-space requirements and watershed management districts. Finally, each chapter will conclude by identifying pitfalls to avoid and highlighting "best practices" that will mitigate environmental problems or avoid them altogether. In sum, after completing each chapter, readers should have a firm grasp of relevant concepts and processes, an understanding of current research and know how to apply science to land-use decisions.
Author:
Publisher:
ISBN:
Category : Environmental management
Languages : en
Pages : 372
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Book Description
[The report]... provides the American people with an important resource from which they can better understand trends in the condition of the air, water, land, and human health of the United States. This report uses scientifically sound measures, called indicators, to address fundamental questions relevant to the EPA's mission to protect the environment and human health. To accomplish its mission to protect human health and the environment, EPA must pay close attention to trends in the condition of the Nation's environment. This kind of information, which is captured in EPA's 2008 ROE, can help EPA to prioritize its work and to focus on human health and ecological activities that can lead to improvements in the conditions of the Nation's environment.
Author: Sharon E. Kroening
Publisher:
ISBN:
Category : Earth sciences
Languages : en
Pages : 122
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Book Description
Author: Bojie Fu
Publisher: Springer Science & Business Media
ISBN: 9400765304
Category : Science
Languages : en
Pages : 369
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Book Description
Climate change and the pressures of escalating human demands on the environment have had increasing impacts on landscapes across the world. In this book, world-class scholars discuss current and pressing issues regarding the landscape, landscape ecology, social and economic development, and adaptive management. Topics include the interaction between landscapes and ecological processes, landscape modeling, the application of landscape ecology in understanding cultural landscapes, biodiversity, climate change, landscape services, landscape planning, and adaptive management to provide a comprehensive view that allows readers to form their own opinions. Professor Bojie Fu is an Academician of Chinese Academy of Sciences and Chair of scientific committee at the Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China. Professor K. Bruce Jones is the Executive Director for Earth and Ecosystem Sciences Division at Desert Research Institute, University of Nevada, Las Vegas, USA.
Author: Vinay Kumar Tyagi
Publisher: Elsevier
ISBN: 0323901794
Category : Science
Languages : en
Pages : 484
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Book Description
Clean Energy and Resource Recovery: Wastewater Treatment Plants as Bio-refineries, Volume 2, summarizes the fundamentals of various treatment modes applied to the recovery of energy and value-added products from wastewater treatment plants. The book addresses the production of biofuel, heat, and electricity, chemicals, feed, and other products from municipal wastewater, industrial wastewater, and sludge. It intends to provide the readers an account of up-to-date information on the recovery of biofuels and other value-added products using conventional and advanced technological developments. The book starts with identifying the key problems of the sectors and then provides solutions to them with step-by-step guidance on the implementation of processes and procedures. Titles compiled in this book further explore related issues like the safe disposal of leftovers, from a local to global scale. Finally, the book sheds light on how wastewater treatment facilities reduce stress on energy systems, decrease air and water pollution, build resiliency, and drive local economic activity.As a compliment to Volume 1: Biomass Waste Based Biorefineries, Clean Energy and Resource Recovery, Volume 2: Wastewater Treatment Plants as Bio-refineries is a comprehensive reference on all aspects of energy and resource recovery from wastewater. The book is going to be a handy reference tool for energy researchers, environmental scientists, and civil, chemical, and municipal engineers interested in waste-to-energy. - Offers a comprehensive overview of the fundamental treatments and methods used in the recovery of energy and value-added products from wastewater - Identifies solutions to key problems related to wastewater to energy/resource recovery through conventional and advanced technologies and explore the alternatives - Provides step-by-step guidance on procedures and calculations from practical field data - Includes successful case studies from both developing and developed countries
