Causal Analysis/Diagnosis Decision Information System (CADDIS)

Information Sources

• Related Links
• Databases
• Glossary
• References

D.1. Conceptual Model Library

Conceptual models describe hypothesized relationships among sources, stressors, and biotic responses within an aquatic system.    More information »

Generic Conceptual Models

  (select simple or detailed format for individual stressors listed below)

• Dissolved Oxygen: Simple, Detailed
• Flow Alteration: Simple, Detailed
• Ionic Strength: Simple, Detailed
• Metals: Simple, Detailed
• Nutrients: Simple, Nitrogen Detailed, Phosphorus Detailed
• Sediments: Simple, Detailed
• Temperature: Simple, Detailed
• Unspecified Toxic Chemicals: Simple, Detailed

Case-Specific Conceptual Models

  Willimantic River, Connecticut:

• Acute or Chronic Toxicity from Metals, Ammonia or a Complex Mixture
• Asphyxiation Due to Low Dissolved Oxygen
• Loss of Habitat Associated with Interstitial Space
• Mortality Due to Elevated Temperature
• Removal of Organisms During High Flows
• Taxa Replacement or Loss Due to Altered Food Resources