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6 n <br />vegetation, may create anoxic conditions which suffocAte <br />fish. <br />We will investigate a number of approaches to winter <br />aeration with emphasis on effio±ency, cost and minimization <br />of safety problems caused by thin ice. Through coordination <br />with the City and the Minnesota rNR, we will develop a <br />recommendation as to the scat appropriate type of aeration. <br />3. If carp are found to be present in Wetland 893, measures <br />Cnt be t=hc— to rc=o,.'c t1cm and Bnaure 'iieii• they cannot <br />later re-enter the wetland from other water bodies. Carp <br />are bottom feeding vegetarians which destroy submergent <br />plants and smother the spawning areas of game fish with <br />ailt. If carp arc present, we will explore with the <br />Minnesota DNR the possibility of eliminating them with <br />rotenone. A plan and coat estimate for treatment will be <br />provided. <br />If measures are found necessary to keep carp from <br />entering or re-entering the wetland, we will provide data <br />and examples of inplace carp barriers and make a <br />recommendation as to the most appropriate structure. Carp <br />removal and control has been included in the amnagement plan <br />budget as an optional task since it is presently unknown <br />whether carp presently have access to the basin. <br />4. Since no viable fish population presently exists in the <br />wetland, future stocking will be necessary to provide a base <br />population. We will coordinate with the Minnesota DNk and <br />develop recommendations as to an appropriate stocking mix <br />and a time frame for future stockings. <br />Task. 5_Ae:t.hetics Analysis I� <br />0m <br />A specific analysis or aesthetics will only be <br />necessary if dredging is undertaken as a fisheries <br />management measure. This analysis will focus on the <br />measures necessary within the wetland and at the spoil <br />disposal site to recreate relatively natural topography and <br />vegetation. The product of this analysis will be a <br />conceptual plan for post -dredging restoration. Wildlife <br />management measures that may be recommended also have an <br />aesthetic component. While not requiring a specific <br />aesthetic analysis, any recommendations made as to <br />enhancement of an upland buffer will be developed with <br />aesthetics as a major consideration. <br />