Laserfiche WebLink
<br />Herbaceous Wetlands <br />Cattail Marsh (MLCCS Codes 61510, 61610, 61710, 61810/347 Total Acres) <br />Fifty-two cattail marshes were documented within the City of Elk River. For the <br />purposes of this project, cattails marshes do not include monotypic (i.e. single species) <br />stands of the nonnative narrow-leaf cattail with very low species diversity. Wetlands <br />within the city of City of Elk River comprised primarily of narrow-leaf cattail (Typha <br />angustifolia) and reed canary grass (Phalaris arundinacea) were considered non- <br />native dominated herbaceous wetlands (MLCCS codes 61330,61480,61530, and <br />61630). Several large cattail/reed canary grass monotypes were observed within the <br />city, as well as numerous medium to small disturbed basins containing a monotype or <br />combination of invasive species. <br /> <br /> <br />Cattail marsh is an emergent marsh <br />dominated by cattails (including Typha <br />latifolia, less frequently T. angustifolia, <br />and very often their hybrids T. glauca). <br />Cattail marshes occurs most commonly <br />along lake margins and in shallow basins, <br />although it is sometimes also present in <br />river backwaters. Lacustrine cattail <br />marshes typically have a muck-bottom <br />zone bordering the shoreline, where <br />cattails are rooted in the bottom substrate, and a floating mat zone, where the roots do <br />not contact the bottom but instead the plants grow suspended in a buoyant peaty mat. <br />Associated species vary widely, but some of the most common ones are sedges of the <br />genus Carex(C. aquatilis, C. rostrata, and C.lanuginosa), bulrushes (Scirpus <br />americanus, S. acutus, and S. heterochaetus), and broad-leaved herbs such as <br />northern marsh fem (Thelypteris palustris), swamp milkweed (Asclepias incamata), <br />jewel-weed (Impatiens capensis), broad-leaved arrowhead (Sagittaria latifolia), mad- <br />dog skullcap (Scutellaria lateriflora), marsh skullcap (Scutellaria galericulata), and blue <br />vervain (Verbena hastata). <br /> <br />Wet Meadow (MLCCS Code 61420, 61540/268 Total Acres) <br />Thirty-five wet meadows were encountered during the survey of Elk River. The <br />ground layer of wet meadow communities are composed of dense, closed stands of <br />predominately wide-leaved sedges (e.g., Carex lacustris, C. stricta, C. aquatilis C. <br />rostrata, C. haydenil) or grasses (e.g., Calamagrostis canadensis, Cc inexpansa). <br /> <br />City of Elk River, MN - Natural Resouce Inventory <br />Bonestroo Natural Resources, September 2004 <br /> <br />29 <br />