Conceptual Model 1
Conceptual Model 1 : (a) The conceptual model describes a series of working hypotheses of how the stressor might affect ecological entities. The conceptual model also describes the ecosystem potentially at risk, the relationship between measures of effect and assessment endpoints, and exposure scenarios. [CENR, 1999: Ecorisk in the Federal Government]; (b) A diagram or written description of the predicted key relationships between the stressor(s) and the assessment endpoint(s) for a risk assessment. [USEPA, 1997: Guidance on Cumulative Risk Assessment, Planning and Scoping]; (c) A conceptual model in problem formulation is a written description and visual representation of predicted relationships between ecological entities and the stressors to which they may be exposed. [USEPA, 1998a: Guidelines for Ecological Risk Assessment]
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