NSNWRNeal Smith National Wildlife Refuge (Iowa)
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Forest Service Northern Research Station, the Leopold Center for Sustainable Agriculture, and the Neal Smith National Wildlife Refuge (NSNWR) in the Walnut Creek watershed in Jasper County in central Iowa.
To test their hypothesis, the team set up twelve small watersheds on portions of the NSNWR that were waiting for restoration to native tall-grass prairie landscapes and in the meantime were being leased to farmers for crop production in a corn-soybean rotation.