Site selection, design criteria and performance assessment for wetland restorations in the prairie pothole region / Susan M. Galatowitsch
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TextPublication details: Ames, IA : Iowa State University, 1993.Description: iv, 124 leaves : ill. ; 29 cmSubject(s): Online resources: Abstract: Between 1987 and 1991, 1892 wetlands (2714 ha) were restored by state and federal agencies, most as part of the Conservation Reserve Program in northern Iowa, southern Minnesota, and southeastern South Dakota.These restored wetlands are assumed to provide wildlife habitat and improve water quality. These assumptions were evaluated by comparing features of restored wetlands to those of natural wetlands (historic or extant). A preliminary evaluation was made on all restorations; more detailed information was collected on 62 wetlands restored in 1988. The water quality evaluation is based on watershed land use, basin morphometry, and emergent vegetation development. The evaluation of restored wetlands as wildlife habitat is based on wetland type, water regime, and vegetation composition and zonation. Thirty-six of the 62 restorations do not have any part of their watershed in row-crop production and only ten had more than 50% in row crops. Earten dams are installed on most (73%) of all
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Thesis(Ph.D.)--Iowa State University, 1993.
Includes bibliographical references (leaves 117-118).
Between 1987 and 1991, 1892 wetlands (2714 ha) were restored by state and federal agencies, most as part of the Conservation Reserve Program in northern Iowa, southern Minnesota, and southeastern South Dakota.These restored wetlands are assumed to provide wildlife habitat and improve water quality. These assumptions were evaluated by comparing features of restored wetlands to those of natural wetlands (historic or extant). A preliminary evaluation was made on all restorations; more detailed information was collected on 62 wetlands restored in 1988. The water quality evaluation is based on watershed land use, basin morphometry, and emergent vegetation development. The evaluation of restored wetlands as wildlife habitat is based on wetland type, water regime, and vegetation composition and zonation. Thirty-six of the 62 restorations do not have any part of their watershed in row-crop production and only ten had more than 50% in row crops. Earten dams are installed on most (73%) of all