CADDIS Home
Recent Additions
September 23, 2010
We have released the 2010 version of CADDIS to the public. The new release contains new content in each part of the site, and has been reorganized into five volumes, or topic areas. Listed below are those volumes, how they correspond to sections of the 2007 release (in parentheses), and the new content within each volume.
- Volume 1: Stressor Identification (Step-by-Step Guide) – New causal assessment background section, providing information on the CADDIS causal approach, causal concepts, and causal history.
- Volume 2: Sources, Stressors & Responses (Candidate Causes) – New stressor modules for ammonia, herbicides, insecticides, pH (low and high), and physical habitat; a new source module for urbanization.
- Volume 3: Examples & Applications (Examples, Databases) – New analytical examples, illustrating the use of different data analysis methods; new case studies, summarizing completed causal assessments; a summary of how different states have used causal assessment techniques in their systems.
- Volume 4: Data Analysis (Analyzing Data) – New sections on selecting an analysis approach, basic principles and issues, exploratory data analysis, basic analyses, and advanced analyses.
- Volume 5: Causal Databases (Candidate Causes, Databases) – Expanded Interactive Conceptual Diagram application that allows users to view, create, and collaborate on conceptual diagrams, as well as use those diagrams to access and link supporting literature.
October 01, 2007
We have added new material to CADDIS. The all new sections (listed below) have been added on: Candidate Causes, Analyzing Data, and Databases. In addition, we have updated the "in-depth" sections of the Step-by-Step guide.
Candidate Causes: Common Candidate Causes
- Metals
- Sediments
- Nutrients
- Dissolved Oxygen
- Temperature
- Ionic Strength
- Flow Alteration
- Unspecified Toxic Chemicals
Candidate Causes: Interactive Conceptual Model for Phosphorus
Analyzing Data: Data Analysis Methods
- Scatter Plots
- Correlation
- Box Plots
- Conditional Probability Analysis
- Regression Analysis
- Predicting Environmental Conditions from Biological Observations
- Quantile Regression
- Classification and Regression Trees
- Species Sensitivity Distributions
Analyzing Data: Fundamentals of Data Analysis
- Data Sources
- Assuring Data Quality
- Using Statistics Responsibly
- Extrapolation
Analyzing Data: Get Data Analysis Tools: Downloadable tools available on this page include the Species Sensitivity Distribution Generator and CADStat.
- Predicting Environmental Conditions from Biological Observations: Technical Details and Programs
- Conceptual Model Library
- Metals Chronic Concentration-Response Gallery
- Metals Species Sensitivity Distribution Gallery
- Field Stressor-Response Association Gallery
August 06, 2007
The CADDIS is site has new material that is currently undergoing final review by U.S. EPA. In addition to all new material, sections of the step by step guide have been updated, in particular, the "in depth" sections, multiple causes, and using statistics responsibly. The all new sections, listed below, include these general topics: candidate causes, analytical tools, an conceptual models.
Common Candidate Causes: Metals, Sediments, Nutrients, Dissolved Oxyge,n Temperature, Ionic Strength, Flow Alteration, Unspecified Toxic Chemicals, Interactive Conceptual Model for Phosphorus. Download alert: you will be prompted to download and install the latest version of Flash (a freely available program) in order to view this part of CADDIS.
Analyzing Data: Data Analysis Methods: Scatter Plots, Correlation, Box Plots, Conditional Probability Analysis, Regression Analysis, Predicting Environmental Conditions from Biological Observations, Quantile Regression, Classification and Regression Trees, Species Sensitivity Distributions
Analyzing Data: Fundamentals of Data Analysis: Data Sources, Assuring Data Quality, Matching Data in Space and Time, Classifying Sites, Normalizing Data, Using Statistics Responsibly, Extrapolatio,n Organizing Data along Causal Pathways
Analyzing Data: Get Data Analysis Tools. Download alert: To use CADStat, you will need to download and install the R Statistical package (a freely available program).
Predicting Environmental Conditions from Biological Observations: Technical Details and Programs, Databases, Conceptual Model Library, Metals Chronic Concentration-Response Gallery, Metals Species Sensitivity Distribution Gallery, Field Stressor-Response Gallery
March 23, 2007
We have added more material to CADDIS and would like your comments on the new material! Specifically, comment is invited on two additional candidate cause modules, an interactive conceptual model, and analytical methods, tools, and databases. The two additional candidate causes are Altered Flow and Unspecified Toxic Chemicals. We have added an Interactive Conceptual Model section that includes a model for phosphorus. Within the new Analytical Tools section, The Methods tab includes descriptions of analytical methods including scatter plots, linear regression, predicting environmental conditions from biological observations, and species sensitivity distributions. Analytical Tools provided under the Get the Tools tab include CADStat; a downloadable software package for analyzing data using a variety of exploratory and statistical approaches. We have added new material under Databases, including downloadable and on-line stressor-response galleries. You can submit comments informally by clicking on the "Click here to comment" link found in the upper right hand part of each page. If you would like your comments to be part of the official public record, please submit them to the docket by following the instructions in the March 23, 2007 Federal Register notice. The comment period for this material ends April 22, 2007.
January 17, 2007
We are adding more material to CADDIS and would like your comments on the new material! Specifically, comment is invited on two additional candidate cause modules, an interactive conceptual model, and analytical methods, tools, and databases. The two additional candidate causes are Altered Flow and Unspecified Toxic Chemicals. We have added an Interactive Conceptual Model section that includes a model for phosphorus. Within the new Analytical Tools section, The Methods tab includes descriptions of analytical methods including scatter plots, linear regression, predicting environmental conditions from biological observations, and species sensitivity distributions. Analytical Tools provided under the Get the Tools tab include CADStat; a downloadable software package for analyzing data using a variety of exploratory and statistical approaches. We have added new material under Databases, including downloadable and on-line stressor-response galleries. You can submit comments informally by clicking on the "Click here to comment" link found in the upper right hand part of each page. If you would like your comments to be part of the official public record, please submit them to the docket by following the instructions in the March 23, 2007 Federal Register notice. The comment period for this material ends April 22, 2007.
April 27, 2005
The CADDIS web site is under external review until Friday, May 27, 2005. Comments may be submitted and viewed using EPA's http://www.epa.gov/edocket. Select "search" and key in the Docket Number ORD-2005-0001. As published in the April 27, 2005, Federal Register Notice, all comments must be submitted by Friday, May 27, 2005. Comments received by this date will be considered by the external peer review panel during their review.
October 01, 2004
The CADDIS site is currently being updated. Definitions for the lines of evidence in Steps 3.2, 3.3, 5.2, and 5.3 are being clarified. New worksheets for stressor-response evidence from field observational studies, toxicity tests, and ecological process models are being developed. A searchable library of conceptual models is being added to the examples page.