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Author: Thomas C. Malone
Publisher: American Geophysical Union
ISBN:
Category : Nature
Languages : en
Pages : 398
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Book Description
Published by the American Geophysical Union as part of the Coastal and Estuarine Studies, Volume 55. Nutrient and contaminant inputs to estuaries and coastal seas, the exploitation of living resources, translocation of nonindigenous species, and habitat loss or modification are among the most significant and sustained anthropogenic alterations of coastal ecosystems. Although the chapters that follow touch on all of these issues, the causes and consequences of nutrient enrichment are emphasized. Nutrient enrichment of estuaries and coastal seas has increased dramatically in recent decades, largely as a consequence of the combustion of fossil fuels and land-use patterns in coastal watersheds related to increases in population density and agriculture. How these changes and the compounding effects of meteorological events and local?]regional expressions of global climate change will play out in terms of ecosystem dynamics are important questions that will drive research and monitoring in the coastal zone for decades to come.
Author: Thomas C. Malone
Publisher: American Geophysical Union
ISBN:
Category : Nature
Languages : en
Pages : 398
Get Book Here
Book Description
Published by the American Geophysical Union as part of the Coastal and Estuarine Studies, Volume 55. Nutrient and contaminant inputs to estuaries and coastal seas, the exploitation of living resources, translocation of nonindigenous species, and habitat loss or modification are among the most significant and sustained anthropogenic alterations of coastal ecosystems. Although the chapters that follow touch on all of these issues, the causes and consequences of nutrient enrichment are emphasized. Nutrient enrichment of estuaries and coastal seas has increased dramatically in recent decades, largely as a consequence of the combustion of fossil fuels and land-use patterns in coastal watersheds related to increases in population density and agriculture. How these changes and the compounding effects of meteorological events and local?]regional expressions of global climate change will play out in terms of ecosystem dynamics are important questions that will drive research and monitoring in the coastal zone for decades to come.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309210798
Category : Political Science
Languages : en
Pages : 258
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Book Description
The Chesapeake Bay is North America's largest and most biologically diverse estuary, as well as an important commercial and recreational resource. However, excessive amounts of nitrogen, phosphorus, and sediment from human activities and land development have disrupted the ecosystem, causing harmful algae blooms, degraded habitats, and diminished populations of many species of fish and shellfish. In 1983, the Chesapeake Bay Program (CBP) was established, based on a cooperative partnership among the U.S. Environmental Protection Agency (EPA), the state of Maryland, and the commonwealths of Pennsylvania and Virginia, and the District of Columbia, to address the extent, complexity, and sources of pollutants entering the Bay. In 2008, the CBP launched a series of initiatives to increase the transparency of the program and heighten its accountability and in 2009 an executive order injected new energy into the restoration. In addition, as part of the effect to improve the pace of progress and increase accountability in the Bay restoration, a two-year milestone strategy was introduced aimed at reducing overall pollution in the Bay by focusing on incremental, short-term commitments from each of the Bay jurisdictions. The National Research Council (NRC) established the Committee on the Evaluation of Chesapeake Bay Program Implementation for Nutrient Reduction in Improve Water Quality in 2009 in response to a request from the EPA. The committee was charged to assess the framework used by the states and the CBP for tracking nutrient and sediment control practices that are implemented in the Chesapeake Bay watershed and to evaluate the two-year milestone strategy. The committee was also to assess existing adaptive management strategies and to recommend improvements that could help CBP to meet its nutrient and sediment reduction goals. The committee did not attempt to identify every possible strategy that could be implemented but instead focused on approaches that are not being implemented to their full potential or that may have substantial, unrealized potential in the Bay watershed. Because many of these strategies have policy or societal implications that could not be fully evaluated by the committee, the strategies are not prioritized but are offered to encourage further consideration and exploration among the CBP partners and stakeholders.
Author:
Publisher:
ISBN:
Category : Soil conservation
Languages : en
Pages : 642
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Book Description
Vol. 25, no. 1 contains the society's Lincoln Chapter's Resource conservation glossary.
Author: David J. Welsch
Publisher:
ISBN:
Category : Streambank planting
Languages : en
Pages : 24
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Book Description
Author: Vijay P. Singh
Publisher: Allied Publishers
ISBN: 9788177645477
Category : Groundwater
Languages : en
Pages : 588
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Book Description
Author: Istvan Bogardi
Publisher: Springer Science & Business Media
ISBN: 3642760406
Category : Technology & Engineering
Languages : en
Pages : 438
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Book Description
The nitrate content of drinking water is rising at an alarming rate in several regions of NATO countries and elsewhere in the world. The increase is due to lack of proper sewage treatment, and primarily to excess fertilizer application. Also, eutrophication in several coastal areas is triggered by high nitrate concentrations. The main purpose of this book is to integrate scientific knowledge related to exposure assessment, health consequences and control of nitrate contamination in water. The motivation is related to the magnitude, the possible adverse health effects, and the high cost of control ling nitrate contamination. Future research tasks are defined by an interaction among hydro logists, toxicologists and environmental engineers in an integrated framework for nitrate risk management. The target readership of this book is a mix of university colleagues, practitioners from both the private and public sectors and advanced graduate students working with the hydrological, health science or environmental engineering aspects of nitrate contamination. The main conclusions include: 1. For risk assessment purposes, knowledge and sufficiently accurate models are available to predict nitrate load and its fate in water under changes in land use. 2. Once agricultural exposure controls are implemented, the response times in ground water may be so long as to make controls unrealistic. 3. It is still unknown whether agricultural best management practice is a compromise between nitrate risk reduction and agricultural revenue. 4. The current drinking water guidelines of 10 mg/L NOrN need not be changed.
Author:
Publisher:
ISBN:
Category : Groundwater
Languages : en
Pages : 218
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Book Description
Author: Paul H. Sharpe
Publisher: Academic Press
ISBN: 0128129204
Category : Technology & Engineering
Languages : en
Pages : 444
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Book Description
Horse Pasture Management begins with coverage of the structure, function and nutritional value of plants, continuing into identification of pasture plants. Management of soil and plants in a pasture is covered next, followed by horse grazing behavior, feed choices of horses, management of grazing horses, and how to calculate how many horses should be grazing relative to land size. Management of hay and silage are included, since year-round grazing is not possible on many horse farms. A number of chapters deal with interactions of a horse farm with the environment and other living things. As an aid in good pasture management, one chapter explains construction and use of fencing and watering systems. Contributions are rounded out with a chapter explaining how the University of Kentucky helps horse farm managers develop their pasture management programs. - The purpose of the book is to help people provide a better life for horses - Provides the basic principles of pasture management for those involved in equine-related fields and study - Covers a variety of strategies for managing the behavior, grouping, environmental, and feeding needs of grazing horses to ensure high levels of welfare and health - Includes information on environmental best practices, plant and soil assessment, and wildlife concerns - Explains pasture-related diseases and toxic plants to be avoided - Includes links to useful resources and existing extension programs
Author: Committee on Characterization of Wetlands
Publisher: National Academies Press
ISBN: 0309587220
Category : Science
Languages : en
Pages : 329
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Book Description
"Wetlands" has become a hot word in the current environmental debate. But what does it signify? In 1991, proposed changes in the legal definities of wetlands stirred controversy and focused attention on the scientific and economic aspects of their management. This volume explores how to define wetlands. The committee--whose members were drawn from academia, government, business, and the environmental community--builds a rational, scientific basis for delineating wetlands in the landscape and offers recommendations for further action. Wetlands also discusses the diverse hydrological and ecological functions of wetlands, and makes recommendations concerning so-called controversial areas such as permafrost wetlands, riparian ecosystems, irregularly flooded sites, and agricultural wetlands. It presents criteria for identifying wetlands and explores the problems of applying those criteria when there are seasonal changes in water levels. This comprehensive and practical volume will be of interest to environmental scientists and advocates, hydrologists, policymakers, regulators, faculty, researchers, and students of environmental studies.
Author: Peter F. Ffolliott
Publisher: Springer Science & Business Media
ISBN: 9780306466984
Category : Business & Economics
Languages : en
Pages : 150
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Book Description
We must enhance the effectiveness ofland stewardship and management of the world's natural resources to meet a growing global population's need for conservation, sustainable development, and use of land, water, and other natural resources. Ecosystem-based, mul tiple-use land stewardship is necessary when considering the present and future uses ofland, water, and other natural resources on an operationally efficient scale. We need holistically planned and carefully implemented watershed management practices, projects, and pro grams to accommodate the increasing demand for commodities and amenities, clear water, open space, and uncluttered landscapes. An international conference in Tucson, Arizona, from March 13 to 16, 2000, examined these needs and increased people's awareness of the contributions that ecosystem-based, multiple-use watershed management can make to future land stewardship. The conference was sponsored by the School of Renewable Natural Resources, University of Arizona; the College of Agriculture, University of Arizona; the Rocky Mountain Research Station, USDA Forest Service; the Research Center for Conservation of Water Resources and Disaster Pre vention, National Chung-Hsing University, Taiwan; the Department of Forest Resources, University of Minnesota; the Center for Integrated Natural Resources and Agriculture Man agement, University of Minnesota; the Centro de Investigaciones Biologicas del Noreste, Mexico; the International Arid Lands Consortium; the USDA Natural Resources Conserva tion Service; the Bureau of Land Management of the Department of the Interior; the Salt River Project, Phoenix, Arizona; the Southern Arizona Chapter, Southwestern Section of the Society of American Foresters; and IUFRO Working Party 8. 04. 04, Erosion Control by Watershed Management.
