Science & Technology

Stressor-Response Relationships from Ecological Simulation Models

How to derive and evaluate evidence using stressor-response relationships from ecological simulation models

Symptoms

This page shows how to derive and evaluate evidence using symptoms.

Causal Pathway

How to derive and evaluate evidence of a Causal Pathway

Getting Started

This page provides a guide overview to the step-by-step guide to Stressor Identification, and fundamentals of causal assessment.

Step 5. Identify Probable Causes

This page includes an overview of Step 5, to identify probable cause, then weighing evidence for a candidate cause, comparing evidence across causes, and analyzing the expected output of the causal assessment.

Figure: Consistency of Evidence

Consistency of Evidence, Table 5-6

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"

Figure: Analogous Stressors

Figure 4-6 illustrates the concept of the type of evidence for analogous stressors.

Figure: Stressor-Response Relationships from Ecological Simulation Models

Figure 4-3 illustrates the concept of the type of evidence "Stressor-Response Relationships from Ecological Simulation Models"

Figure: Stressor-Response Relationships from Other Field Studies

Stressor-Response Relationships from Other Field Studies: Figure 4-1

Figure: Stressor-Response Relationships from Laboratory Studies

Figure 4-2 illustrates the concept of the type of evidence "Stressor-Response Relationships from Laboratory Studies"

Figure: Mechanistically Plausible Cause

Figure 4-4 illustrates the concept of the type of evidence "Mechanistically Plausible Cause"

Figure: Explanation of Inconsistent Evidence

This page includes a more detailed explanation about the Figure 5-1 illustration from Volume 1.

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.

Example Annotated Conceptual Model Diagram

Step 5 makes use of an annotated conceptual diagram, shown on this page, to complete the assessment.

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.

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.