title: Biophysical and social barriers restrict water quality improvements in the Mississippi River Basin.
authors.affiliation: Department of Natural Resources and Environmental Sciences, University of Illinois , W503 Turner Hall, 1102 S. Goodwin Avenue, Urbana, Illinois 61801, United States.
authors.forename: Mark B
authors.initials: MB
authors.lastname: David
authors.forename: Courtney G
authors.initials: CG
authors.lastname: Flint
authors.forename: Gregory F
authors.initials: GF
authors.lastname: McIsaac
authors.forename: Lowell E
authors.initials: LE
authors.lastname: Gentry
authors.forename: Mallory K
authors.initials: MK
authors.lastname: Dolan
authors.forename: George F
authors.initials: GF
authors.lastname: Czapar
mesh_terms: D055592:Biophysical Phenomena; D003247:Conservation of Natural Resources / Q000191:economics / Q000379:methods*; D004784:Environmental Monitoring / Q000379:methods*; D015146:Midwestern United States; D009566:Nitrates / Q000032:analysis; D010758:Phosphorus / Q000032:analysis; D011050:Policy Making; D058996:Quality Improvement; D045483:Rivers / Q000737:chemistry*; D012959:Socioeconomic Factors; D014874:Water Pollutants, Chemical / Q000032:analysis*; D060753:Water Quality / Q000592:standards*
chemical_list: D009566:Nitrates; D014874:Water Pollutants, Chemical; D010758:Phosphorus