Thousand Islands – Frontenac Arch Thousand Islands – Frontenac Arch The Thousand Islands – Frontenac Arch region or 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 region 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
North American river otter by North American river otters in various areas. Susceptibility of these species is greatest during the summer (when waterfowl broods are vulnerable) and autumn. The North American river otters have also been known to catch and consume moulting American wigeon ("Mareca americana") and green-winged teal ("Anas crecca"). Other species of birds found within their diets include: northern pintail ("Anas acuta"); mallard ("Anas platyrhynchos"); canvasback ("Aythya valisineria"); ruddy duck ("Oxyura jamaicensis"); and the American coot ("Fulica americana"). Although they consume birds, North American river otters do not feed on bird eggs. Aquatic invertebrates have been recognized as an integral part of