Recreated Wetlands No Match for Original

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Science  06 Jul 2001:
Vol. 293, Issue 5527, pp. 25
DOI: 10.1126/science.293.5527.25a

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The assumption that an artificial wetland can replace a natural one has shaped U.S. policy for the past decade. Now, in unusually blunt language, a new report by the National Research Council says that the current approach, designed to ensure "no net loss" of wetlands, is a failure and that humanmade ecosystems are often a poor substitute for the real thing. What's needed, the report says, are major changes to the system for designing and regulating replacement wetlands.