The Canadian Wildlife Service (Ontario Region) Acid Rain Biomonitoring Program stands alone as the only broad-scale biological effects monitoring program in Canada whose focus is acid-sensitive aquatic ecosystems important to wildlife and other natural resources.

	What is Acid Rain?
	The Acid Rain Problem in Canada — History and Current Status
	The Concept of "Critical Loads"
	Surface Water Acidity: Are Present Control Measures Enough?
	Lake pH and Biodiversity
	Acid Rain and Water Birds
	The Canadian Wildlife Service Acid Rain Program
	Acid Rain Biomonitoring in Ontario's Lakes
	• Study Areas and Characteristics
	• Canadian Lakes Loon Survey
	• Study Components
	• Water Chemistry Monitoring
	• Water Bird Monitoring
	• Food Chain Monitoring Program
	• Predictive Modelling
	Acid Rain and Wildlife Modelling
	Acid Rain References
	Other On-Line Resources

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