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Glacial Lakes Upham and Aitkin

Ecoregion in MN

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This ecoregion is primarily in a distinctive former glacial lake bed that is mostly flat peatlands and flat to gently rolling lake plains and till plains. The Mississippi River flows through the ecoregion and in the southern part of the ecoregion occurs the only small area of agriculture, in patches within 7 km of the river. The vast majority of the region is now woody wetland with several areas and small patches of non-wetland forest. The presettlement vegetation was heavily covered with conifer bogs and swamps with aspen and birch along the St. Louis River in the center of the ecoregion and in many patches elsewhere, plus smaller amounts of white and red pine. The peatlands are primarily on moderately decomposed Hemists, with sections of sandy forest Psamments, wet forest Aqualfs near the St. Louis and Mississippi Rivers, and forest Udalfs in a few places. About 60% of this ecoregion was wetlands and 25% mixed and evergreen forest in 2013.

— EPA

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Ecoregion