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Wetland Natural Community Descriptions and Management <br />Recommendations <br />From examination of historic aerial photographs, wetlands have remained relatively unchanged <br />in size and location from before development. Some of the wetland types have changed due to <br />influences of stormwater inputs or lower water levels due to draining or artificial outlets. Other <br />wetlands have lost hydrologic inputs due to diversion of surface water flows from the <br />development of curbed roads and catch basins. Invasive vegetation has also affected these <br />wetlands. Turf areas contributing nutrients to the wetland and disc golf activities compacting soil <br />and disturbing the vegetation have reduced the ecological integrity of many of the wetland basins <br />within this park. Glossy and common buckthorn, purple loosestrife, and reed canary grass where <br />all common in the park's wetlands. <br />Locations of the improvements discussed in the following paragraphs are shown in figure 6.2 <br />Community AC-W1 <br />Shrub -carr <br />Qualitative Rank: Low <br />Area: 1.1 (2.1 total) <br />This is a shrub -carr wetland community that is dominated by purple loosestrife and sandbar <br />willow. Other vegetation within the basin includes water plantain, ditch stonecrop, silver maple, <br />horsetail, bog birch, and wool grass. <br />This wetland currently has a ditch that drains Wetland W2 into this basin from the southeast. It <br />currently is a shrub -carr and has not been hydrologically altered. The main alteration to this <br />basin is a purple loosestrife infestation that would be categorized as a high- density infestation <br />and requires biological control utilizing beetles. <br />Community <br />Activity <br />Priority <br />Estimated Cost <br />Comments <br />AC-W1 <br />Control purple <br />loosestrife <br />High <br />N/A <br />Monitoring beetle population <br />City of Roseville 71 <br />Parks Natural Resource Management <br />