Download or read book News notes written by and published by . This book was released on 1994 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book U S Geological Survey Circular written by and published by . This book was released on 1984 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Environmental Protection Research Catalog Indexes written by Smithsonian Science Information Exchange and published by . This book was released on 1972 with total page 1478 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Coastal Environmental Monitoring written by United States. Congress. House. Committee on Science, Space, and Technology. Subcommittee on Natural Resources, Agriculture Research, and Environment and published by . This book was released on 1990 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Chemical Abstracts written by and published by . This book was released on 2002 with total page 2692 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Index Medicus written by and published by . This book was released on 2004 with total page 2164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.

Download or read book Environmental Toxicology and Chemistry written by and published by . This book was released on 2000 with total page 976 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Quality of Our Nation s Waters written by Gregory J. Fuhrer and published by Department of Interior. This book was released on 1999 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: A nontechnical publication that describe the major findings of the NAWQA (National Water-Quality Assessment) Program on water-quality issues of regional and national concern. The first 2 sections provide a general overview of findings on nutrients and pesticides and their implications for water-resource management and protection. More detailed discussions of the sources, distributions, and potential effects of these chemicals are provided in subsequent sections. Numerous color illustrations.

Download or read book Fresh Surface Water Volume I written by James C.I. Dooge and published by EOLSS Publications. This book was released on 2009-08-25 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fresh Surface Water theme is a component of Encyclopedia of Water Sciences, Engineering and Technology Resources in the global Encyclopedia of Life Support Systems (EOLSS), which is an integrated compendium of twenty one Encyclopedias. The occurrence of surface water in abundance is unique to planet Earth among the inner or terrestrial planets. This is only one of the environmental consequences of the anomalous properties of water. Water has been central to human life and human thought throughout history. The availability of fresh surface water varies between continents, between regions within any given continent, between countries in a given region, and between catchments in a given country.Five key topics have been identified under the theme of Fresh Surface Water. These are: Origin, Resources and Distribution of Rivers and Streams; Characteristics of River Systems; Transport Processes in River Systems; River Ecosystems; The Uses of River Water and Impacts, which are then expanded into multiple subtopics, each as a chapter. These three volumes are aimed at the following five major target audiences: University and College students Educators, Professional practitioners, Research personnel and Policy analysts, Managers, and Decision makers and NGOs.

Download or read book Agrochemical Fate and Movement written by T. R. Steinheimer and published by . This book was released on 2000 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book emphasizes the importance of scale-of-study when evaluating the environmental fate and transport characteristics of field-applied pesticides, including insecticides, herbicides, and fungicides. The volume examines pesticide usage and its potential impact on non-target natural resources and the dominant issues surrounding pestidice movement in a variety of geophysical locations and environmental systems.

Download or read book Pesticide Risk Assessment written by Sumitra Arora and published by CABI. This book was released on 2019-04-08 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have been witnessing a silent chemical revolution over the past half century. Pesticides bring widespread environmental contamination, with residues detected far from their site of application. These substances are playing havoc with the lives of humans and the environment because of their indiscriminate use. Pesticide Risk Assessment describes the environmental risks associated with the injudicious use of pesticides and their mixtures, their methods of estimation and assessment, and their regulation. It also contains methods to reduce and minimize the risks associated with the use of pesticides. The book: Examines pesticides, their impact on the environment, mode of action, estimation methods, risk assessment, mixture toxicity, alternatives for risk reduction, and regulatory aspects.Includes global case studies detailing cases of pesticide poisoning, and the health effects of exposure to pesticides. Covers risks to human health, aquifers and aquatic organisms, pollinators, soil micro flora and fauna, terrestrial organisms and wildlife. Suitable for anyone involved in pesticide application and integrated pest management, this is essential reading for researchers, scientists, extension workers and policy makers.

Download or read book MultiYearPlan20032005 written by and published by DIANE Publishing. This book was released on with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pollution Abstracts written by and published by . This book was released on 1996 with total page 858 pages. Available in PDF, EPUB and Kindle. Book excerpt: Indexes material from conference proceedings and hard-to-find documents, in addition to journal articles. Over 1,000 journals are indexed and literature published from 1981 to the present is covered. Topics in pollution and its management are extensively covered from the standpoints of atmosphere, emissions, mathematical models, effects on people and animals, and environmental action. Major areas of coverage include: air pollution, marine pollution, freshwater pollution, sewage and wastewater treatment, waste management, land pollution, toxicology and health, noise, and radiation.

Download or read book EPA Publications Bibliography written by United States. Environmental Protection Agency and published by . This book was released on 1994 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Managing for Healthy Ecosystems written by David J. Rapport and published by CRC Press. This book was released on 2002-10-29 with total page 1548 pages. Available in PDF, EPUB and Kindle. Book excerpt: One of the critical issues of our time is the dwindling capacity of the planet to provide life support for a large and growing human population. Based on a symposium on ecosystem health, Managing for Healthy Ecosystems identifies key issues that must be resolved if there is to be progress in this complex area, such as: Evolving methods f

Download or read book Watershed Research in the U S Geological Survey written by National Research Council and published by National Academies Press. This book was released on 1997-04-09 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: Watershed research is conducted by the U.S. Geological Survey (USGS) to expand our understanding of basic hydrologic mechanisms and their responses at the watershed scale and to provide information that serves as the basis for water and environmental management activities carried out largely by other governmental and private entities. The work of the USGS in this area is carried out by its Water Resources Division and occurs in three general program areas: basic research, regional and site assessments, and data collection. These activities are becoming increasingly important, especially in the context of water and environmental management, where contemporary problems are being approached more than ever on an integrated ecosystems or watershed basis and where the underlying physical, chemical, and biological science is complex. Although the value of this type of hydrologic research is well recognized within the USGS, available financial resources to support it remain modest. Thus, this study seeks to help maximize the effectiveness of the agency's work. The study took two years, during which time the committee visited field sites, received briefings, reviewed descriptive materials, deliberated toward conclusions, and wrote this report. Recommendations are intended to assist the USGS in improving its overall strategy for work in this area; descriptions of a number of scientific opportunities are included, and appropriate circumstances for collaboration with and support for others are identified.

Download or read book Sources Fate and Transport of Nitrogen and Phosphorus in the Chesapeake Bay Watershed written by Scott W. Ator and published by Geological Survey (USGS). This book was released on 2011 with total page 27 pages. Available in PDF, EPUB and Kindle. Book excerpt: Spatially Referenced Regression on Watershed Attributes (SPARROW) was used to provide empirical estimates of the sources, fate, and transport of total nitrogen (TN) and total phosphorus (TP) in the Chesapeake Bay watershed, and the mean annual TN and TP flux to the bay and in each of 80,579 nontidal tributary stream reaches. Restoration efforts in recent decades have been insufficient to meet established standards for water quality and ecological conditions in Chesapeake Bay. The bay watershed includes 166,000 square kilometers of mixed land uses, multiple nutrient sources, and variable hydrogeologic, soil, and weather conditions, and bay restoration is complicated by the multitude of nutrient sources and complex interacting factors affecting the occurrence, fate, and transport of nitrogen and phosphorus from source areas to streams and the estuary. Effective and efficient nutrient management at the regional scale in support of Chesapeake Bay restoration requires a comprehensive understanding of the sources, fate, and transport of nitrogen and phosphorus in the watershed, which is only available through regional models. The current models, Chesapeake Bay nutrient SPARROW models, version 4 (CBTN_v4 and CBTP_v4), were constructed at a finer spatial resolution than previous SPARROW models for the Chesapeake Bay watershed (versions 1, 2, and 3), and include an updated timeframe and modified sources and other explantory terms.