CADDIS Volume 1: Stressor Identification
CADDIS provides a pragmatic guide for determining the causes of detrimental changes and undesirable biological conditions observed in aquatic systems.
In this volume, we present a five-step process for conducting a causal assessment at a particular site:
- Step 1: Define the Case
- Step 2: List Candidate Causes
- Step 3: Evaluate Data from the Case
- Step 4: Evaluate Data from Elsewhere
- Step 5: Identify Probable Causes
This causal assessment process is derived from the Stressor Identification Guidance Document, published jointly by the Office of Water and the Office of Research and Development of the U.S. EPA. The basic approach remains the same, but several changes have been made to make the process more accessible.
This volume also contains additional materials supporting the SI process. Users new to SI may want to read through the Step-by-Step Guide Introduction. More experienced users may wish to jump directly pages on specific types of evidence (listed in the Quick Finder). Users interested in the historial and philosophical underpinnings of causal assessment may wish to review the Causal Assessment Background section.
| Introduction Step 1: Define the Case | Step 2: Candidate Causes Step 3: Data from the Case | Step 4: Data from Elsewhere Step 5: Identify Probable Causes | Causal Assessment Background |
Top Three Questions
CADDIS Navigation
Volume 1: Stressor Identification
Volume 2: Sources, Stressors & Responses
Volume 3: Examples & Applications
Volume 4: Data Analysis
Volume 5: Causal Databases