The Frontenac Axis is an exposed strip of Precambrian rock in Canada and the United States that links the Canadian Shield from Algonquin Park with the Adirondack mountain range in New York, an extension of the Laurentian mountains of Québec. The Algonquin to Adirondacks region, which includes the Frontenac Axis or Arch, is a critical linkage for biodiversity and resilience, and one with important conservation potential. The axis separates the St. Lawrence Lowlands and the Great Lakes Lowlands. It has many distinctive plant and animal species. It is one of four ecoregions of the Mixedwood Plains.
For the main entry on this topic see Thousand Islands-Frontenac Arch.
- Keddy, Cathy (November 1995). "The conservation potential of the Frontenac Axis: Linking Algonquin Park to Adirondacks" (PDF). The Canadian Parks and Wilderness Society - Ottawa Valley Chapter: 72. Retrieved May 8, 2014.
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