Tabla de Contenidos:
  • Scales and Applicability of Indicators
  • Criteria for Evaluating Indicators
  • The Committee's Conceptual Model for Choosing Indicators
  • Policy Perspectives
  • The Recommended Indicators
  • Timing and Cost of Implementing the Committee's Recommendations
  • Local and Regional Indicators
  • Care and Handling of Environmental Data
  • Research
  • Why Are Ecological Indicators Needed?
  • Key Ecological Processes and Products That People Value
  • Establishing Baselines to Evaluate Trends
  • Evaluating Indicators
  • Realistic Expectations about the Value of Indicators
  • The Empirical and Conceptual Foundations of Indicators
  • Scientific Underpinnings of Indicators
  • Using Multiple Approaches
  • Historical and Paleoecological Data As Aids to Indicator Development
  • Sources of Information about Current Ecological Processes
  • Models to Assess Ecosystem Functioning
  • The Committee's Conceptual Model for Choosing Indicators
  • A Framework for Indicator Selection
  • Criteria for Evaluating Indicators
  • Information Handling and Calibration
  • Data Quality Control, Archiving, and Assignment of Responsibilities
  • Use of the Committee Framework
  • Indicators for National Ecological Assessments
  • The Extent and Status of the Nation's Ecosystems
  • Indicators of Ecological Capital: A. Biotic Raw Materials
  • Indicators of Ecological Capital: B. Abiotic Raw Materials
  • Indicators of the Performance of the Nation's Ecosystems
  • Indicators of Nutrient-Use Efficiency and Nutrient Balances in Agroecosystems
  • Research Needs.