05/30/2001 Env Bd Packet - Laserfiche WebLink

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1 1 1 1 1 1 1 1 1 that have received sedimentation and that have been drained by ditching would be required to restore species diversity to this area. An area of young growth forest (3c) cover is found along the wetland margins beyond the zone of aspen and birch. This zone includes red maple, black cherry, alder, red -osier dogwood, and an occasional birch and aspen. Groundstory vegetation varies from bare ground to patches of sedges (Carex sparganioides, C. blanda), red raspberry (Rubus idaeus), white avens (Geum canadense), Agrimonia sp., giant goldenrod (Solidago gigantea), and other species. Wetland soils in this . area have been de- watered by woody invasion. Several debris piles occur within the de- watered wetland and also within the wetland itself. Staghom sumac (Rhus typhina) has invaded into an area along the gravel drive within the young growth forest area, in an upland setting where the same tree species minus the alder occur. The ground cover in this area includes little bluestem, bush clover, showy and early goldenrod, sizeable populations of New Jersey tea, and many other dry prairie plant species. Recommendation: Reduction of woody invasion through brushing and tree removal would increase light available to the ground story, increasing ground cover vegetation and thus stabilizing soils. Reduction of woody growth in de- watered wetland soils would also allow recovery of the shallow groundwater table to levels that would support hydrophytic vegetation, thus restoring and expanding the wetland system. Additional activities in this area would include removal of debris piles and re- vegetating bare soil areas with native species. Southeast Quadrant Oak forests The largest percentage of the land base within the southeast quadrant is dominated by historic oak savanna and forested systems, dominated by white oak ( Quercus alba), northern pin oak (Quercus ellipsoidalis), bur oak (Quercus macrocarpa), and red oak (Quercus rubra). Ground cover vegetation varies under the forest cover. Disturbed areas, such as recent canopy openings due to blow -downs or clearings created by development of the Town Center, support a dominance of black snake root (Eupatorium rugosum), along with a variety of agricultural weeds, including motherwort (Leonurus cardiaca), giant mullein, thistles (Cirsium spp.), and smart weeds (Polygonum spp.). Interspersed in some locations within the savanna are populations of sizeable hackberry trees (Celtis occidentalis), >25" DBH. Boxelder, wild black cherry, sumacs, grey dogwoods (Comus racemosa), raspberries and black berries (Rubus S :98629:040999 6 Lino Lakes Town Center Natural Resource Inventory Report