Table 3. Percent cover of vegetation components at various distances from Route 1.
Site 1 A Site 2 B Site 3 C Scientific Name Common Name Weed Status % Cover* % Cover* % Cover* Acer rubrum Red Maple NA 4 20 66 Alnus serrulata Smooth Alder NA 0 24 26 Apios americana Common Ground Nut NA 0 4 0 Betula nigra River Birch NA 0 0 2 Boehmeria cylindrica False Nettle NA 2 4 4 Cephalanthus occidentalis Buttonbush NA 4 14 0 Clematis virginiana Virgin's Bower NA 0 6 0 Cornus amomum Silky Dogwood NA 0 50 36 Cuscuta sp. Dodder potentially weedy native 4 0 0 Hibiscus moscheutos Swamp mallow NA 38 0 4 Ilex verticillata Winterberry NA 0 0 20 Lythrum salicaria Purple Loosestrife invasive species 76 4 0 Nuphar advena Yellow Pond Lily potentially weedy native 0 0 6 Parthenocissus quinquefolia Virginia Creeper NA 0 6 0 Peltandra virginica Arrow arum NA 2 0 0 Polygonum lapathifolium Nodding Smartweed NA 14 0 0 Quercus palustris Pin Oak NA 0 0 56 Rosa multiflora Multifloral Rose invasive species 0 14 0 Rosa palustris Swamp Rose NA 13 22 0 Salix nigra Black Willow NA 0 38 0 Sambucus canadensis Common Elderberry NA 4 0 0 Smilax rotundifolia Common Greenbriar NA 0 0 4 Toxicodendron radicans Poison Ivy NA 0 0 20 Unidentified Grass Grass NA 6 0 0 Unidentified Sedge Sedge NA 4 0 0 Viburnum dentatum Northern Arrowwood NA 0 0 32 Vitis labrusca Fox Grape potentially weedy native 0 0 10 Percent Cover of Invasive Species and Potentially Weedy Native Species 80 18 16 A Site 1: 200 - 300 feet from current bridge at Rt. 1
B Site 2: 100 - 200 feet beyond mowed riverbank along FMC property
C Site 3: Junction of Millstone River and Little Bear Brook
* Percent cover was determined using the line intercept method. A measuring tape was stretched along 100 foot transects of the river. The length of the transect covered by each species present was recorded in five 10-foot intervals separated by 10 feet along each transect. Each percent cover calculation is based on 50 feet of riverbank at each site. Note that percent cover can exceed 100% at a site because species overlap along the transect.
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