part Part I Introduction to Ecological Risk Assessment -- chapter 001 Defining the Field -- chapter 002 Other Types of Assessments -- chapter 003 Ecological Risk Assessment Frameworks -- chapter 004 Ecological Epidemiology and Causal Analysis -- chapter 005 Variability, Uncertainty, and Probability -- chapter 006 Dimensions, Scales, and Levels of Organization -- chapter 007 Modes and Mechanisms of Action -- chapter 008 Mixed and Multiple Agents -- chapter 009 Quality Assurance -- part Part II Planning and Problem Formulation -- chapter 010 Impetus and Mandate -- chapter 011 Goals and Objectives -- chapter 012 Management Options -- chapter 013 Agents and Sources -- chapter 014 Environmental Description -- chapter 015 Exposure Scenarios -- chapter 016 Assessment Endpoints -- chapter 017 Conceptual Models -- chapter 018 Analysis Plans -- part Part III Analysis of Exposure -- chapter 019 Source Identification and Characterization -- chapter 020 Sampling, Analysis, and Assays -- chapter 021 Mathematical Models of Chemical Transport and Fate -- chapter 022 Exposure to Chemicals and Other Agents -- part Part IV Analysis of Effects -- chapter 023 Exposure�Response Relationships -- chapter 024 Testing -- chapter 025 Biological Surveys -- chapter 026 Organism-Level Extrapolation Models -- chapter 027 Population Modeling -- chapter 028 Ecosystem Effects Modeling -- part Part V Risk Characterization -- chapter 029 Criteria and Benchmarks -- chapter 030 Integrating Exposure and Exposure�Response -- chapter 031 Screening Characterization -- chapter 032 Definitive Risk Characterization by Weighing the Evidence -- chapter 033 Comparative Risk Characterization -- chapter 034 Characterizing Variability, Uncertainty, and Incomplete Knowledge -- part Part VI Risk Management -- chapter 035 Reporting and Communicating Ecological Risks -- chapter 036 Decision Making and Ecological Risks -- chapter 037 Integration of Human Health Risk Assessment -- chapter 038 Integration of Risk, Law, Ethics, Economics, and Preferences -- chapter 039 Monitoring the Results of Risk Management.