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FISH PHYSIOLOGY, TOXICOLOGY, AND WATER QUALITY
Thurston, R. V. FISH PHYSIOLOGY, TOXICOLOGY, AND WATER QUALITY. Proceedings of the Fifth International Symposium, Kowloon, Hong Kong, November 10-13, 1998. U.S. Environmental Protection Agency, Washington, DC, EPA/600/R-00/015 (NTIS PB2000-107439), 2000.
Develop, test, and refine models to evaluate sub-basins to determine whether local water quality problems due to excessive nutrient loading exist, and if so, to characterize them and determine their relationships to nutrient loading. Develop models to simulate overland flow and non-point source pollutant loads to track and assess nutrient loadings across watersheds and provide approaches for estimating nutrient budgets within sub-basins and for predicting changes in nutrient budgets in response to changes in watershed activities/land use/land cover. Demonstrate the application of the recommended approach/models for predicting changes in nutrient budgets in response to changes in proposed watershed activities/land use/land cover, resulting in specific recommendations for reducing the nutrient loads to a basin. For coherence, cooperation, and economics, these models will be housed in a unified, consistent, computational environment for environmental analyses that allows teaching (i.e., technology transfer) to multiple users (users concentrate on problem, not model input/output); that appeals to multi-disciplinary groups for distribution and use as a consistent assessment methodology (includes models, tools, modular design and facilitated updates of science/engineering); that includes resident visualization, animation tools, documentation and tutorials on-line, hooks to GIS and environmental databases; and is executable on UNIX, personal computers, and HPC resources.
Objective # 2.2 Conserve and enhance nation's waters: By 2005, conserve and enhance the ecological health of the nation's (state, interstate, and tribal) waters and aquatic ecosystems-rivers and streams, lakes, wetlands, estuaries, coastal areas, oceans, and groundwater-so that 75% of waters will support healthy aquatic communities.
Scientists from ten countries presented papers at the Fifth International Symposium on Fish Physiology, Toxicology, and Water Quality, which was held on the campus of the city University of Hong Kong on November 10-13, 1998. These Proceedings include 23 papers presented in sessions convened over 4 days. Papers addressed effects of metals on the physiology of fishes and aquatic invertebrates, effects of ammonia on fishes, effects on fishes of toxicants from oil shale and coal gasification effluents, thermal effects on fishes, effects of pollutants on reproduction of fishes, bioaccumulation and physiological effects on fishes of xenobiotics, and the use of semi-permeable membrane devices to monitor xenobiotics. Water quality papers included discussions on hypoxia, metal ecotoxicology, metals on sediments, methodologies to evaluate the health of riparian and wetland environments, risk management of metal pollution, remedial strategies to reduce impacts on a watershed of metal mine wastes, watershed modeling, and strategies for developing nutrient and sediment load allocations for water quality protection.
Record Details:Record Type: DOCUMENT (EPA PUBLISHED PROCEEDINGS)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL EXPOSURE RESEARCH LABORATORY
ECOSYSTEMS RESEARCH DIVISION
PROCESSES & MODELING BRANCH