State and Federal Agencies

• United States Environmental Protection Agency - Marine Ecosystems
• United States Fish & Wildlife Service - Ecosystem Conservation

Domestic Universities, Non-profits & other Organizations

• Communication Parternship for Science and the Seas - Homepage
• Ecosystem-Based Management
• The Heinz Center - Homepage
• The State of the Nation's Ecosystems
• The Nature Conservancy - Conservation of Estuarine and Coastal Ecosystems
• World Resources Institute - Coastal and Marine Ecosystems
• The University of Michigan - Ecosystem Management Initiative
• Great Lakes Information Network - Ecosystem Management in the Great Lakes
• Ecological Society of America - Issues in Ecology

International Organizations

• European Commission - Aquatic Ecosystems
• The World Conservation Union - Commission on Ecosystem Management
• United Nation's Atlas of the Oceans - Ecosystems