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2002 Natural Resources Management
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2002 Natural Resources Management
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7/13/2012 10:46:09 AM
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Shallow Marshes — Shallow marsh plant communities have soils that are saturated to inundated <br />by standing water up to 6- inches in depth throughout most of the growing season. Herbaceous <br />emergent vegetation such as cattails, bulrushes, arrowheads, and lake sedges characterize this <br />community. <br />Wet Meadows — According to the description given by Eggers and Reed, Wet meadows are <br />dominated by grasses, such as (the nonnatives) redtop and reed canary grass, and by native forbs <br />such as giant goldenrod, growing on saturated soils. This description reflects a disturbed <br />condition that is found in many wetlands today. <br />The MN DNR publication, Minnesota's Native Vegetation: A Key to Natural Communities <br />describes Wet Meadows as follows: The ground layer is composed of a dense, closed stand of <br />predominately wide - leaved sedge such as tussock, lakebank, and Hayden's sedges, and the <br />grasses blue] oint, rattlesnake grass, rice cutgrass, and white grass. Common forbs include <br />spotted j oe pye weed, bone set, mint, turtlehead, marsh milkweed and others. Shrub cover ranges <br />from about 0 to 70 percent and is composed of several species of willows, and red osier <br />dogwood. Wet meadows occur on wet mineral soil, muck, or peat. Standing water from several <br />inches to one foot deep is generally present in the spring and after heavy rain, but the water table <br />is generally at, or below the ground surface for most of the growing season. Draining, excessive <br />water level fluctuation and nutrient influx, as well as removal of fire can all lead to a condition of <br />lowered quality as descried by Eggers and Reed. <br />Shrub Swamps —Shrub swamps are wetland plant communities dominated by woody vegetation <br />less then 20 feet in height and a DBH of less than 6 inches. Shrub swamps of Minnesota and <br />Wisconsin are categorized as shrub cams and alder thickets depending on the dominant shrub <br />species. Both occur on organic soils (peat /muck) as well as on the alluvial mineral soils of <br />floodplains. <br />Wooded Swamps— Wooded swamps are forested wetlands dominated by mature conifers and <br />lowland hardwood trees. They are usually associated with ancient lake basins and retired <br />riverine oxbows. The wooded swamps of Minnesota and Wisconsin are divided into two types <br />depending on whether the dominant trees are conifers or hardwoods. Roseville does not contain <br />City of Roseville 18 <br />Parks Natural Resource Management <br />
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