05/30/2001 Env Bd Packet - Laserfiche WebLink

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Central open field Throughout the large field are patches of dry prairie remnants (6B and 2C1/6B). Most of are depauperate, but retain several key dry prairie species, including New Jersey tea, bush clover, showy goldenrod, early goldenrod, patches of little and big bluestem, Indian grass (Sorghastrum nutans), love grass, pearly everlasting, vervains (Verbena spp.), evening primrose (Oenothera biennis), and prairie panic grass (Panicum linearifolium). Quack grass, smooth brome, blue grass, giant mullein (Verbascum thapsus), and a variety of other native and non - native plant species adapted to disturbance are abundant in this area. In the east central portion of the old field there is an area that has been previously scraped and includes piles of dumped materials that appear to include dredged peat substrates, glacial till with gravels and sands, some demolition debris, and some cinders (2d- spoils piles). Around the scrape, large areas of weedy disturbance vegetation have developed, including horseweed (Erigeron canadensis), giant mullein, sweet clover (Melilotus spp.), and Russian thistle (Salsola kali), with scattered bush clover also present. Recommendation: Because of its high visual display potential for south bound lanes of Highway 35, this open field area should be restored (in desired areas) to native prairie using fire and reintroduction of native species. Forested and open wetlands complex A large wetland complex occupies the northeastern -most portion of the northeastern quadrant. The wetland varies from monocultures of reed canary grass to patches of native wetland species including sedges, red osier dogwood, willows (Salix spp.), reeds (Juncus spp.) and pink spiraea (Spiraea tomentosa). Invasion by boxelder, aspen, paper birch (Betula papyrifera), red maple, and alder (Alnus rugosa) has occurred in historic wetland that continues to be de- watered by the developing tree and shrub cover. Within the matrix of aspen, paper birch, and red maple are old tamarack trees, remnants of a tamarack wetland system that was present historically. In the understory, one finds various sedge species that are shade - suppressed, along with invading canary grass, red maple seedlings (Acer rubrum), and Epilobium sp. seedlings (glabra or glandulosum). Recommendation: Brushing and reintroduction of fire into the upland margins of this wetland would invigorate the native groundstory vegetation. Management of the canary grass in areas 5:98629:040999 5 Lino Lakes Town Center Natural Resource Inventory Report