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THE CAUSAL ANALYSIS / DIAGNOSIS DECISION INFORMATION SYSTEM (CADDIS) - 2007 UPDATE
Develop an on-line decision support system that helps investigators in the regions, states and tribes find, access, organize, use and share information to produce causal evaluations of biological impairments in aquatic systems.
CADDIS is an on-line decision support system that helps investigators in the regions, states and tribes find, access, organize, use and share information to produce causal evaluations in aquatic systems. It is based on the US EPA's Stressor Identification process which is a formal method for identifying causes of impairments in aquatic systems.
CADDIS 2007 increases access to relevant information useful for causal analysis and provides methods and tools that practitioners can use to analyze their own data. The new Candidate Cause section provides overviews of commonly encountered causes of impairments to aquatic systems: metals, sediments, nutrients, flow alteration, temperature, ionic strength, and low dissolved oxygen. CADDIS includes new Conceptual Models that illustrate the relationships from sources to stressors to biological effects. An Interactive Conceptual Model for phosphorus links the diagram with supporting literature citations. The new Analyzing Data section helps practitioners analyze their data sets and interpret and use those results as evidence within the USEPA causal assessment process. Downloadable tools include a graphical user interface statistical package (CADStat), and programs for use with the freeware R statistical package, and a Microsoft Excel template. These tools can be used to quantify associations between causes and biological impairments using innovative methods such as species-sensitivity distributions, biological inferences, conditional probability analysis, and quantile regression analysis. New Databases have been added that provide stressor-response associations based on laboratory toxicity tests of metals and field observational data.
URLs/Downloads:FR NOTICE: MARCH 23, 2007 Exit
CAUSAL ANALYSIS / DIAGNOSIS DECISION INFORMATION SYSTEM (CADDIS)
PR NOTICE: JANUARY 25, 2006
A Case Study: Causal Analysis of Biological Impairment in Long Creek: A Sandy-Bottomed Stream in Coastal Southern Maine
FR NOTICE: OCT 4, 2007 Exit
FRAMEWORK FOR DEVELOPING SUSPENDED AND BEDDED SEDIMENT (SABS) WATER QUALITY CRITERIA
WATER QUALITY STANDARDS DATABASE (WQSDB)
EPA'S BIOCRITERIA PROGRAM
FR NOTICE: JANUARY 17, 2007 Exit
FR NOTICE: APRIL 27, 2005 Exit
Record Details:Record Type: DOCUMENT
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL CENTER FOR ENVIRONMENTAL ASSESSMENT
EXPOSURE ANALYSIS AND RISK CHARACTERIZATION GROUP