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Identification of Factors Limiting Game Fish in Southern Minnesota Streams

机译:明尼苏达南部河流限制游动鱼类因素的鉴定

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Degradation of physical habitat in southern Minnesota rivers and streams reducedhabitat diversity, reduced habitat variable differences among ecoregions, limited game fish populations, and altered fish communities. To increase habitat diversity, habitat management should increase diversity of substrate, cover, depth, and velocity. Reducing sedimentation and increasing instream structural diversity should begin stream habitat restoration. Rehabilitation of riparian vegetation should increase habitat diversity but will take decades to centuries for success. Instream strategies may accelerate habitat restoration. From the Minnesota stream survey manual, managers can develop stream management plans when physical habitat limits fisheries. When water quality limits fisheries, additional sampling may be necessary to identify the specific problem, but general efforts to riparian protection may help.

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