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Other species that can tolerate the acidic soils of the taiga are lichens and mosses, yellow nutsedge, and water horsetail. The depth to bedrock has an effect on the plants that grow well in the taiga as well. A shallow depth to bedrock forces the plants to have shallow roots, limiting overall stability and water uptake.
To the south is the Boreal Cordillera, to the east are the Taiga Plains, and its northern extent is defined by Yukon's coastline, at which it abuts the Southern Arctic ecozone. The northernmost area is an arctic tundra which is beyond the tree line , so is characterised by small plants and shrubs .
The taiga experiences relatively low precipitation throughout the year (generally 200–750 mm (7.9–29.5 in) annually, 1,000 mm (39 in) in some areas), primarily as rain during the summer months, but also as snow or fog. Snow may remain on the ground for as long as nine months in the northernmost extensions of the taiga biome. [25]
These three southern zones are the Boreal Shield, at 1,630,000 square kilometres the largest of the eight zones, the Boreal Plains and Boreal Cordillera. [22] A typical ecoregion of this southern tier would be the Eastern Canadian Shield taiga that covers northern Quebec and most of Labrador. Within the boreal region, there are about 1,890,000 ...
The Taiga Shield Ecozone, as defined by the Commission for Environmental Cooperation (CEC), is an ecozone which stretches across Canada's subarctic region. Some regions exhibit exposed Precambrian bedrock of the Canadian Shield , the oldest of the world's geological formations. [ 1 ]
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The retreat of the Laurentide Ice Sheet left a landscape of broadly rolling uplands and lowlands with precambrian granitic bedrock outcrops. [ 2 ] [ 3 ] Few clear drainage channels were left in the rocky sediments deposited by the glacier resulting in a deranged drainage pattern . [ 4 ]
The Northwest Territories taiga ecoregion (WWF:NA0614) is located in the Northwest Territories and Yukon provinces of Canada. It covers forest and tundra along the Mackenzie River Valley and the surrounding highlands in the southern portion of the valley.