Evaluation of Constructed Ponds as a Means of Replacing Natural Wetland Habitat Affected by Highway Projects in North Dakota. Executive Summary

摘要

Landfill extraction during expansion of I-29 in 1975 resulted in construction of 45 ha (109 a) of artificial wetlands in Pembina County, North Dakota. Similar wetlands were constructed in Barnes and Pierce Counties in 1976 and 1977, respectively. Eighteen of these artificial wetlands were studied in 1979 and 1980 to determine their use by waterfowl and marsh birds, and to investigate the types and abundance of aquatic plants and macroinvertebrates present. Water quality investigations and soil analysis of these wetlands were undertaken. Comparisons were made between data collected on artificial wetlands and natural basin wetlands.