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1990 USDA Hardiness zone map detail for the northeast US. Zone 3a is light orange, zone 4b is light lavender. The area is a temperate broadleaf and mixed forests biome transition zone between the true boreal forest to the north and the Big Woods and Carolinian forest to the south, with characteristics of each.
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The dominant trees are American elm, basswood, sugar maple, and red oak. The understory is composed of ironwood, green ash, and aspen. The Big Woods would have once covered 5,000 square miles (13,000 km 2) in a diagonal strip 100 miles (160 km) long and 40 miles (64 km) wide. Today most of this region has been cleared for agriculture and urban ...
The forest was established in 1961 in celebration of the "golden anniversary" (50 years) of the Minnesota Department of Natural Resources's Division of Forestry. Grand Portage: Cook: 99,200 acres (401 km 2) Established in 1933, in extreme northeastern Minnesota.
It is home to the largest population of bald eagles in the contiguous United States following a large increase in conservation efforts and breeding areas since 1989, with an estimated 30 active nests in the Twin Cities alone. [12] The red-tailed hawk thrives in Minnesota woodlands, swamps, and prairies, where rodent populations are high. [13]
Introduced and invasive species of trees include: Aceraceae (Maples) Acer ginnala (Amur maple) Acer platanoides (Norway maple) Fabaceae Robinia pseudoacacia (black locust) Rhamnaceae Frangula alnus (glossy buckthorn, alder buckthorn) Rhamnus cathartica (common buckthorn) Hippocastanaceae (buckeye and horsechestnut) Aesculus glabra (Ohio buckeye)
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The BWCAW within the Superior National Forest. The BWCAW extends along 150 miles (240 km) of the Canadian border in the Arrowhead Region of Minnesota. The combined region of the BWCAW, Superior National Forest, Voyageurs National Park, and Ontario's Quetico and La Verendrye provincial parks make up a large area of contiguous wilderness lakes and forests called the "Quetico-Superior country ...