TY - JOUR AU - Dudley, Daniel, R. AB - Abstract As human populations have grown, water resource quality has declined. Since 1850, 67% of the fish species from the Illinois River and 44% from the Maumee River have become less abundant or have disappeared. Reversing such trends demands innovative approaches to water resource management. This content is only available as a PDF. Author notes Karr is with the Smithsonian Tropical Research Institute, P.O. Box 2072, Balboa, Panama Toth with the South Florida Water Management District, P.O. Box V, West Palm Beach, FL 33402 Dudley with the Division of Water Quality Monitoring and Assessment, Ohio Environmental Protection Agency, Columbus, OH 43215. © 1985 American Institute of Biological Sciences TI - Fish Communities of Midwestern Rivers: A History of Degradation JF - BioScience DO - 10.2307/1309845 DA - 1985-02-01 UR - https://www.deepdyve.com/lp/oxford-university-press/fish-communities-of-midwestern-rivers-a-history-of-degradation-iy27Zm78LM SP - 90 VL - 35 IS - 2 DP - DeepDyve ER -