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EPA’s Ecosystem Services Research Program in the Office of Research and Development is focused on the study of ecosystem services and the benefits to human well-being provided by ecological systems. As part of this research effort, the Willamette Ecosystems Services Project (WE...

The Ecosystem Services Research Program (ESRP) is a new, multi-year research initiative under development by the U.S. Environmental Protection Agency (EPA). The overall goal of the ESRP is to transform the way decision-makers understand and respond to environmental issues, making...

In July, 2000 the U.S. EPA's Office of Research and Development was requested to collaborate in a U.S. EPA Region 6 'Regional Applied Research Effort' (RARE). The primary goal of this RARE is to utilize current science and technology to improve the ecological vulnerability asses...

The State of the Lakes Ecosystem Conference (SOLEC) is a biennial assessment and report from the governments of the U.S. and Canada on progress toward meeting the goals of the Great Lakes Water Quality Agreement (GLWQA). The SOLEC approach has three main elements: 1) The bienn...

The development of robust accuracy assessment methods for the validation of spatial data represent's a difficult scientific challenge for the geospatial science community. The importance and timeliness of this issue is related directly to the dramatic escalation in the developmen...

The purpose of the Mississippi River map series is to provide reference for ecological vulnerability throughout the entire Mississippi River Basin, which is a forthcoming product. This map series product consists of seven 32 inch x 40 inch posters, with a nominal scale of 1 inch ...

This report describes methods for quantitative regional assessment developed by the Regional Vulnerability Assessment (ReVA) program. The goal of ReVA is to develop regional-scale assessments of the magnitude, extent, distribution, and uncertainty of current and anticipated envir...

The principles and operating procedures for the National Environmental Laboratory Accreditation Conference (NELAC) are contained in the NELAC Constitution and Bylaws. The major portion of this document (standards) contains detailed requirements for accrediting environmental labo...

The San Pedro River Geo-Data Browser was jointly developed by the Landscape Ecology Branch of the U.S. Environmental Protection Agency and the U.S. Department of Agriculture, Agricultural Research Service (Tucson, AZ). Since 1995, U.S. Environmental Protection Agency (EP A) and U...

<br>The United States Environmental Protection Agency's Environmental Monitoring and Assessment Program (EMAP) is conducting a pilot study in the western United States. This study will advance the science of ecological monitoring and demonstrate techniques for regional-scale asse...

Planning and assessment in land and water resource management are evolving from simple, local-scale problems toward complex, spatially explicit regional ones. Such problems have to be addressed with distributed models that can compute runoff and erosion at different spatial and t...

High-Resolution airborne color video data were used to evaluate the accuracy of a land cover map of the upper San Pedro River watershed, derived from June 1997 Landsat Thematic Mapper data. The land cover map was interpreted and generated by Instituto del Medio Ambiente y el Bes...

The United States Environmental Protection Agency's Environmental Monitoring and Assessment Program (EMAP) is conducting a pilot study in the western United States. This study will advance the science of ecological monitoring and demonstrate techniques for regional-scale assessme...

The United States Environmental Protection Agency's Environmental Monitoring and Assessment Program (EMAP) is conducting a study in the western United States (EPA Regions 8, 9, and 10) that will advance the science of ecological monitoring and demonstrate techniques for regional-...

The United States Environmental Protection Agency's Environmental Monitoring and Assessment Program (EMAP) is conducting a pilot study in the western United States. This study will advance the science of ecological monitoring and demonstrate techniques for regional-scale assessme...

The Mid-Atlantic region is comprised of southern New York, southern and western New Jersey, Pennsylvania, West Virginia, Maryland, Virginia, northeastern North Carolina, Delaware, and Washington, DC. It is an ecosystem rich in streams, wetlands, forests, estuaries, breeding birds...

The goal of the Western Airborne Contaminants Assessment Project (WACAP) is to assess the deposition of airborne contaminants in Western National Parks, providing regional and local information on exposure, accumulation, impacts, and probable sources. This project is being desig...

New England weather is highly variable for a number of<br>reasons. Our regional climate is also quite variable. The<br>winters of the past decade are milder than they were in the<br>1960s and 1970s but as the ice-out and snowfall data show<br>(Figs 2.5 and 2.6), the patterns of c...

The goal of ORD's Regional Vulnerability Assessment (ReVA) Program is to develop all <br>approach to quantifying regional ecological vulnerabilities so that risk management activities can be targeted and prioritized. ReVA's focus is, to develop a set of methods that are applica...

The utility of Digital Orthophoto Quads (DOQS) in assessing the classification accuracy of land cover derived from Landsat MSS data was investigated. Initially, the suitability of DOQs in distinguishing between different land cover classes was assessed using high-resolution airbo...

Accurate exposure classification tools are required to link exposure with health effects in epidemiological studies. Long-term, time-integrated exposure measures would be desirable to address the problem of developing appropriate residential childhood exposure classifications. ...