Science & Technology
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Figure: Stressor-Response Relationships from Laboratory Studies
Figure 4-2 illustrates the concept of the type of evidence "Stressor-Response Relationships from Laboratory Studies"
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Figure: Mechanistically Plausible Cause
Figure 4-4 illustrates the concept of the type of evidence "Mechanistically Plausible Cause"
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Figure: Explanation of Inconsistent Evidence
This page includes a more detailed explanation about the Figure 5-1 illustration from Volume 1.
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Biological Assessment and Biocriteria
Step 5, identify probable cause, an overview, Weighing evidence for a candidate cause, Comparing evidence across causes, and Expected output of the causal assessment.
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Example Annotated Conceptual Model Diagram
Step 5 makes use of an annotated conceptual diagram, shown on this page, to complete the assessment.
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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.
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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.
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Table. Water Management Programs and Stressor Identification
This table includes the water management program codes/titles along with the role of the stressor identification and purpose.
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Causal Characteristics and Types of Evidence
Causal characteristics and the types of evidence that support them. Table 5-3, Table 5-4
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Example Stressor-Response Relationships Table
Example Stressor-Response Relationships Table as part of CADDIS Volume 1 stressor identification section.
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About Diagnosing Causes
This page is about how to diagnose causes and gives some examples to help risk assessors.
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About Eliminating Improbable Causes
Overview, details of eliminating improbable causes
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About Scoring the Evidence
This page gives an overview about how to score the evidence when doing stressor identification.
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Tips for Listing Candidate Causes
An overview for listing candidate causes
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Listing Multiple Stressors as Candidate Causes
An overview, listing stressors as candidate causes
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Standard List Example Developed by the States
A table containing a list of candidate causes used for stressor identification in Bogue Homo, Mississippi.
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Lists of Stressors from Monitoring Studies
An overview of stressors from studies
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Aquatic Stressors that Can Potentially Cause Biological Impairment
This is a list of stressors that can potentially cause biological impairment and the source reference.
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Figure: Symptoms
Figure 3-11 illustrates the concept of looking at symptoms of the fish to determine what the impairment might be.
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Figure: Verified Predictions
Figure 3-10 illustrates the concept of using experience and knowledge to verify hypothesis' which can help to strengthen the case too.