Data and Tools

Long Creek Conceptual Model Diagram

Figure 2-2 is an example of a simple conceptual model diagram for increased water temperature as a candidate cause of biological impairment.

Figures: Manipulation of Exposure at Other Sites

These figures illustrate the concept of the type of evidence "Manipulation of Exposure at Other Sites"

The Case of DDT: Revisiting the Impairment

This page is an example or case study showing how the identification of DDT and it's subsequent ban had a positive impact on the reproduction of birds. This is an excellent example of causal analysis with a positive outcome.

Iteration Options

This page provides additional information on the iterative options to consider when you are trying to identify the cause of an impairment. This is supporting step 5 of a causal assessment.

Example Stressor-Response Relationships Table

Example Stressor-Response Relationships Table as part of CADDIS Volume 1 stressor identification section.

Spatial/Temporal Co-occurrence

This page shows how to derive and evaluate evidence of spatial/temporal co-occurrence.

Stressor-Response Relationships from Other Field Studies

This page shows how to derive and evaluate evidence using stressor-response relationships from other field studies.

Verified Predictions

This page shows how to derive and evaluate evidence of a verified prediction.

Laboratory Tests of Site Media

This page show how to derive and evaluate evidence from laboratory tests of site media.

Manipulation of Exposure

This page shows how to derive and evaluate evidence from studies that manipulate exposure.

Evidence of Exposure or Biological Mechanism

This page shows how to derive and evaluate evidence of exposure or biological mechanism.

Stressor-Response Relationships from the Field

This page shows how to derive and evaluate evidence of stressor-response relationships from the field.

Temporal Sequence

This page shows how to derive and evaluate evidence of a temporal sequence.

Step 2. List Candidate Causes

This page includes an overview, including more details and expected output of Step 2, listing candidate causes of a causal impairment.

Step 4. Evaluate Data from Elsewhere

This page includes an overview, details and expected output from Step 4: Evaluate Data from Elsewhere.

Step 3. Evaluate Data from the Case

This page contains an overview of the details and expected output of Step 3, to evaluate data from the case at hand.

Urbanization - Temperature

This page covers how water temperature changes associated with urbanization, including heated surface runoff can affect stream biota and climate change.

pH

This page introduces to the pH module, when to list pH as a candidate cause, ways to measure pH, simple and detailed conceptual model diagrams for pH, pH module references and literature reviews.

Metals - Point Source Releases

This page contains a table of point sources for metals releases to air, water and land pulled from the Toxic's Release Inventory (2002).

Urbanization - Hydrology

This page includes hydrologic changes, baseflow changes, water withdrawals and interbasin transfers associated with urbanization, and biotic responses to hydrologic (or flow) changes associated with urbanization