Chapter 2

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2.0 Ecotoxicology and Ecological Risk Assessment
   2.1 Bioavailability and Exposure
   2.2 Bioconcentration, Bioaccumulation and Biomagnification
   2.3 Toxicity Testing/Endpoints
   2.4 Dose-Response Relationships
   Figure 2.1 Toxicity of a Hypothetical Contaminant to the Sheepshead Minnow in a 48-Hour Acute Test
   Figure 2.2 Effect of a Hypothetical Contaminant on Egg-Laying by Sheepshead Minnows During a 75-Day Chronic Test
   Figure 2.3 Egg-Laying by the Sheepshead Minnow When Exposed to a Hypothetical Contaminant During a 75-Day Exposure, Showing the No Observed Adverse Effect Concentration (NOAEC) and the Lowest Observed Adverse Effect Concentration (LO
   Table 2.1 Bioconcentration Factors in Daphnia for 4 Chemicals
   Table 2.2 Lowest Observed Adverse Effect Concentrations (LOAEC) for Different Life Stages of Fathead Minnows Exposed to a Hypothetical Contaminant